dsa: add DSA switch driver for Microchip KSZ9477
The KSZ9477 is a fully integrated layer 2, managed, 7 ports GigE switch with numerous advanced features. 5 ports incorporate 10/100/1000 Mbps PHYs. The other 2 ports have interfaces that can be configured as SGMII, RGMII, MII or RMII. Either of these may connect directly to a host processor or to an external PHY. The SGMII port may interface to a fiber optic transceiver. This driver currently supports vlan, fdb, mdb & mirror dsa switch operations. Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Woojung Huh <Woojung.Huh@microchip.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Woojung Huh
David S. Miller
parent
fc3973a1fa
commit
b987e98e50
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@ -39,6 +39,8 @@ config NET_DSA_MV88E6060
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This enables support for the Marvell 88E6060 ethernet switch
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chip.
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source "drivers/net/dsa/microchip/Kconfig"
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source "drivers/net/dsa/mv88e6xxx/Kconfig"
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config NET_DSA_QCA8K
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@ -8,4 +8,5 @@ obj-$(CONFIG_NET_DSA_SMSC_LAN9303) += lan9303-core.o
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obj-$(CONFIG_NET_DSA_SMSC_LAN9303_I2C) += lan9303_i2c.o
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obj-$(CONFIG_NET_DSA_SMSC_LAN9303_MDIO) += lan9303_mdio.o
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obj-y += b53/
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obj-y += microchip/
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obj-y += mv88e6xxx/
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@ -0,0 +1,12 @@
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menuconfig MICROCHIP_KSZ
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tristate "Microchip KSZ series switch support"
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depends on NET_DSA
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select NET_DSA_TAG_KSZ
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help
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This driver adds support for Microchip KSZ switch chips.
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config MICROCHIP_KSZ_SPI_DRIVER
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tristate "KSZ series SPI connected switch driver"
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depends on MICROCHIP_KSZ && SPI
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help
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Select to enable support for registering switches configured through SPI.
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@ -0,0 +1,2 @@
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obj-$(CONFIG_MICROCHIP_KSZ) += ksz_common.o
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obj-$(CONFIG_MICROCHIP_KSZ_SPI_DRIVER) += ksz_spi.o
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File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
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@ -0,0 +1,210 @@
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/*
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* Microchip KSZ series switch common definitions
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*
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* Copyright (C) 2017
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef __KSZ_PRIV_H
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#define __KSZ_PRIV_H
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#include <linux/kernel.h>
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#include <linux/mutex.h>
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#include <linux/phy.h>
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#include <linux/etherdevice.h>
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#include <net/dsa.h>
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#include "ksz_9477_reg.h"
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struct ksz_io_ops;
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struct vlan_table {
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u32 table[3];
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};
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struct ksz_device {
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struct dsa_switch *ds;
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struct ksz_platform_data *pdata;
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const char *name;
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struct mutex reg_mutex; /* register access */
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struct mutex stats_mutex; /* status access */
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struct mutex alu_mutex; /* ALU access */
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struct mutex vlan_mutex; /* vlan access */
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const struct ksz_io_ops *ops;
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struct device *dev;
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void *priv;
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/* chip specific data */
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u32 chip_id;
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int num_vlans;
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int num_alus;
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int num_statics;
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int cpu_port; /* port connected to CPU */
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int cpu_ports; /* port bitmap can be cpu port */
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int port_cnt;
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struct vlan_table *vlan_cache;
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u64 mib_value[TOTAL_SWITCH_COUNTER_NUM];
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};
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struct ksz_io_ops {
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int (*read8)(struct ksz_device *dev, u32 reg, u8 *value);
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int (*read16)(struct ksz_device *dev, u32 reg, u16 *value);
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int (*read24)(struct ksz_device *dev, u32 reg, u32 *value);
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int (*read32)(struct ksz_device *dev, u32 reg, u32 *value);
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int (*write8)(struct ksz_device *dev, u32 reg, u8 value);
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int (*write16)(struct ksz_device *dev, u32 reg, u16 value);
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int (*write24)(struct ksz_device *dev, u32 reg, u32 value);
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int (*write32)(struct ksz_device *dev, u32 reg, u32 value);
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int (*phy_read16)(struct ksz_device *dev, int addr, int reg,
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u16 *value);
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int (*phy_write16)(struct ksz_device *dev, int addr, int reg,
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u16 value);
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};
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struct ksz_device *ksz_switch_alloc(struct device *base,
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const struct ksz_io_ops *ops, void *priv);
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int ksz_switch_detect(struct ksz_device *dev);
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int ksz_switch_register(struct ksz_device *dev);
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void ksz_switch_remove(struct ksz_device *dev);
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static inline int ksz_read8(struct ksz_device *dev, u32 reg, u8 *val)
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{
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int ret;
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mutex_lock(&dev->reg_mutex);
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ret = dev->ops->read8(dev, reg, val);
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mutex_unlock(&dev->reg_mutex);
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return ret;
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}
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static inline int ksz_read16(struct ksz_device *dev, u32 reg, u16 *val)
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{
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int ret;
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mutex_lock(&dev->reg_mutex);
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ret = dev->ops->read16(dev, reg, val);
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mutex_unlock(&dev->reg_mutex);
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return ret;
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}
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static inline int ksz_read24(struct ksz_device *dev, u32 reg, u32 *val)
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{
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int ret;
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mutex_lock(&dev->reg_mutex);
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ret = dev->ops->read24(dev, reg, val);
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mutex_unlock(&dev->reg_mutex);
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return ret;
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}
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static inline int ksz_read32(struct ksz_device *dev, u32 reg, u32 *val)
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{
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int ret;
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mutex_lock(&dev->reg_mutex);
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ret = dev->ops->read32(dev, reg, val);
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mutex_unlock(&dev->reg_mutex);
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return ret;
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}
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static inline int ksz_write8(struct ksz_device *dev, u32 reg, u8 value)
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{
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int ret;
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mutex_lock(&dev->reg_mutex);
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ret = dev->ops->write8(dev, reg, value);
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mutex_unlock(&dev->reg_mutex);
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return ret;
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}
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static inline int ksz_write16(struct ksz_device *dev, u32 reg, u16 value)
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{
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int ret;
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mutex_lock(&dev->reg_mutex);
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ret = dev->ops->write16(dev, reg, value);
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mutex_unlock(&dev->reg_mutex);
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return ret;
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}
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static inline int ksz_write24(struct ksz_device *dev, u32 reg, u32 value)
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{
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int ret;
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mutex_lock(&dev->reg_mutex);
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ret = dev->ops->write24(dev, reg, value);
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mutex_unlock(&dev->reg_mutex);
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return ret;
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}
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static inline int ksz_write32(struct ksz_device *dev, u32 reg, u32 value)
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{
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int ret;
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mutex_lock(&dev->reg_mutex);
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ret = dev->ops->write32(dev, reg, value);
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mutex_unlock(&dev->reg_mutex);
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return ret;
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}
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static inline void ksz_pread8(struct ksz_device *dev, int port, int offset,
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u8 *data)
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{
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ksz_read8(dev, PORT_CTRL_ADDR(port, offset), data);
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}
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static inline void ksz_pread16(struct ksz_device *dev, int port, int offset,
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u16 *data)
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{
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ksz_read16(dev, PORT_CTRL_ADDR(port, offset), data);
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}
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static inline void ksz_pread32(struct ksz_device *dev, int port, int offset,
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u32 *data)
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{
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ksz_read32(dev, PORT_CTRL_ADDR(port, offset), data);
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}
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static inline void ksz_pwrite8(struct ksz_device *dev, int port, int offset,
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u8 data)
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{
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ksz_write8(dev, PORT_CTRL_ADDR(port, offset), data);
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}
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static inline void ksz_pwrite16(struct ksz_device *dev, int port, int offset,
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u16 data)
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{
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ksz_write16(dev, PORT_CTRL_ADDR(port, offset), data);
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}
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static inline void ksz_pwrite32(struct ksz_device *dev, int port, int offset,
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u32 data)
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{
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ksz_write32(dev, PORT_CTRL_ADDR(port, offset), data);
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}
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#endif
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@ -0,0 +1,216 @@
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/*
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* Microchip KSZ series register access through SPI
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*
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* Copyright (C) 2017
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <asm/unaligned.h>
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#include <linux/delay.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/spi/spi.h>
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#include "ksz_priv.h"
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/* SPI frame opcodes */
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#define KS_SPIOP_RD 3
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#define KS_SPIOP_WR 2
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#define SPI_ADDR_SHIFT 24
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#define SPI_ADDR_MASK (BIT(SPI_ADDR_SHIFT) - 1)
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#define SPI_TURNAROUND_SHIFT 5
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static int ksz_spi_read_reg(struct spi_device *spi, u32 reg, u8 *val,
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unsigned int len)
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{
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u32 txbuf;
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int ret;
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txbuf = reg & SPI_ADDR_MASK;
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txbuf |= KS_SPIOP_RD << SPI_ADDR_SHIFT;
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txbuf <<= SPI_TURNAROUND_SHIFT;
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txbuf = cpu_to_be32(txbuf);
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ret = spi_write_then_read(spi, &txbuf, 4, val, len);
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return ret;
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}
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static int ksz_spi_read(struct ksz_device *dev, u32 reg, u8 *data,
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unsigned int len)
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{
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struct spi_device *spi = dev->priv;
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return ksz_spi_read_reg(spi, reg, data, len);
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}
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static int ksz_spi_read8(struct ksz_device *dev, u32 reg, u8 *val)
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{
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return ksz_spi_read(dev, reg, val, 1);
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}
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static int ksz_spi_read16(struct ksz_device *dev, u32 reg, u16 *val)
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{
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int ret = ksz_spi_read(dev, reg, (u8 *)val, 2);
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if (!ret)
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*val = be16_to_cpu(*val);
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return ret;
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}
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static int ksz_spi_read24(struct ksz_device *dev, u32 reg, u32 *val)
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{
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int ret;
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*val = 0;
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ret = ksz_spi_read(dev, reg, (u8 *)val, 3);
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if (!ret) {
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*val = be32_to_cpu(*val);
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/* convert to 24bit */
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*val >>= 8;
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}
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return ret;
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}
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static int ksz_spi_read32(struct ksz_device *dev, u32 reg, u32 *val)
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{
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int ret = ksz_spi_read(dev, reg, (u8 *)val, 4);
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if (!ret)
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*val = be32_to_cpu(*val);
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return ret;
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}
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static int ksz_spi_write_reg(struct spi_device *spi, u32 reg, u8 *val,
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unsigned int len)
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{
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u32 txbuf;
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u8 data[12];
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int i;
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txbuf = reg & SPI_ADDR_MASK;
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txbuf |= (KS_SPIOP_WR << SPI_ADDR_SHIFT);
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txbuf <<= SPI_TURNAROUND_SHIFT;
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txbuf = cpu_to_be32(txbuf);
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data[0] = txbuf & 0xFF;
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data[1] = (txbuf & 0xFF00) >> 8;
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data[2] = (txbuf & 0xFF0000) >> 16;
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data[3] = (txbuf & 0xFF000000) >> 24;
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for (i = 0; i < len; i++)
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data[i + 4] = val[i];
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return spi_write(spi, &data, 4 + len);
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}
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static int ksz_spi_write8(struct ksz_device *dev, u32 reg, u8 value)
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{
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struct spi_device *spi = dev->priv;
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return ksz_spi_write_reg(spi, reg, &value, 1);
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}
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static int ksz_spi_write16(struct ksz_device *dev, u32 reg, u16 value)
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{
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struct spi_device *spi = dev->priv;
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value = cpu_to_be16(value);
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return ksz_spi_write_reg(spi, reg, (u8 *)&value, 2);
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}
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static int ksz_spi_write24(struct ksz_device *dev, u32 reg, u32 value)
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{
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struct spi_device *spi = dev->priv;
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/* make it to big endian 24bit from MSB */
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value <<= 8;
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value = cpu_to_be32(value);
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return ksz_spi_write_reg(spi, reg, (u8 *)&value, 3);
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}
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static int ksz_spi_write32(struct ksz_device *dev, u32 reg, u32 value)
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{
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struct spi_device *spi = dev->priv;
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value = cpu_to_be32(value);
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return ksz_spi_write_reg(spi, reg, (u8 *)&value, 4);
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}
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static const struct ksz_io_ops ksz_spi_ops = {
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.read8 = ksz_spi_read8,
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.read16 = ksz_spi_read16,
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.read24 = ksz_spi_read24,
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.read32 = ksz_spi_read32,
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.write8 = ksz_spi_write8,
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.write16 = ksz_spi_write16,
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.write24 = ksz_spi_write24,
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.write32 = ksz_spi_write32,
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};
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static int ksz_spi_probe(struct spi_device *spi)
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{
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struct ksz_device *dev;
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int ret;
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dev = ksz_switch_alloc(&spi->dev, &ksz_spi_ops, spi);
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if (!dev)
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return -ENOMEM;
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if (spi->dev.platform_data)
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dev->pdata = spi->dev.platform_data;
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ret = ksz_switch_register(dev);
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if (ret)
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return ret;
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spi_set_drvdata(spi, dev);
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return 0;
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}
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static int ksz_spi_remove(struct spi_device *spi)
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{
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struct ksz_device *dev = spi_get_drvdata(spi);
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if (dev)
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ksz_switch_remove(dev);
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return 0;
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}
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static const struct of_device_id ksz_dt_ids[] = {
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{ .compatible = "microchip,ksz9477" },
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{},
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};
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MODULE_DEVICE_TABLE(of, ksz_dt_ids);
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static struct spi_driver ksz_spi_driver = {
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.driver = {
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.name = "ksz9477-switch",
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.owner = THIS_MODULE,
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.of_match_table = of_match_ptr(ksz_dt_ids),
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},
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.probe = ksz_spi_probe,
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.remove = ksz_spi_remove,
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};
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module_spi_driver(ksz_spi_driver);
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MODULE_AUTHOR("Woojung Huh <Woojung.Huh@microchip.com>");
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MODULE_DESCRIPTION("Microchip KSZ Series Switch SPI access Driver");
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MODULE_LICENSE("GPL");
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@ -0,0 +1,29 @@
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/*
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* Microchip KSZ series switch platform data
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*
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* Copyright (C) 2017
|
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*
|
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* Permission to use, copy, modify, and/or distribute this software for any
|
||||
* purpose with or without fee is hereby granted, provided that the above
|
||||
* copyright notice and this permission notice appear in all copies.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
||||
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
||||
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
||||
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||||
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
||||
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
||||
*/
|
||||
|
||||
#ifndef __MICROCHIP_KSZ_H
|
||||
#define __MICROCHIP_KSZ_H
|
||||
|
||||
#include <linux/kernel.h>
|
||||
|
||||
struct ksz_platform_data {
|
||||
u32 chip_id;
|
||||
u16 enabled_ports;
|
||||
};
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue