/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/device.h>
#include <linux/etherdevice.h>
#include <linux/gpio/driver.h>
/* The VSC7395 switch chips have 5+1 ports which means 5 ordinary ports and
* a sixth CPU port facing the processor with an RGMII interface . These ports
* are numbered 0 . . 4 and 6 , so they leave a " hole " in the port map for port 5 ,
* which is invalid .
*
* The VSC7398 has 8 ports , port 7 is again the CPU port .
*
* We allocate 8 ports and avoid access to the nonexistent ports .
*/
#define VSC73XX_MAX_NUM_PORTS 8
/**
* struct vsc73xx_portinfo - port data structure : contains storage data
* @ pvid_vlan_filtering : pvid vlan number used in vlan filtering mode
* @ pvid_tag_8021q : pvid vlan number used in tag_8021q mode
* @ pvid_vlan_filtering_configured : informs if port has configured pvid in vlan
* filtering mode
* @ pvid_tag_8021q_configured : imforms if port have configured pvid in tag_8021q
* mode
*/
struct vsc73xx_portinfo {
u16 pvid_vlan_filtering;
u16 pvid_tag_8021q;
bool pvid_vlan_filtering_configured;
bool pvid_tag_8021q_configured;
};
/**
* struct vsc73xx - VSC73xx state container : main data structure
* @ dev : The device pointer
* @ reset : The descriptor for the GPIO line tied to the reset pin
* @ ds : Pointer to the DSA core structure
* @ gc : Main structure of the GPIO controller
* @ chipid : Storage for the Chip ID value read from the CHIPID register of the
* switch
* @ addr : MAC address used in flow control frames
* @ ops : Structure with hardware - dependent operations
* @ priv : Pointer to the configuration interface structure
* @ portinfo : Storage table portinfo structructures
* @ vlans : List of configured vlans . Contains port mask and untagged status of
* every vlan configured in port vlan operation . It doesn ' t cover tag_8021q
* vlans .
* @ fdb_lock : Mutex protects fdb access
*/
struct vsc73xx {
struct device *dev;
struct gpio_desc *reset;
struct dsa_switch *ds;
struct gpio_chip gc;
u16 chipid;
u8 addr[ETH_ALEN];
const struct vsc73xx_ops *ops;
void *priv;
struct vsc73xx_portinfo portinfo[VSC73XX_MAX_NUM_PORTS];
struct list_head vlans;
struct mutex fdb_lock;
};
/**
* struct vsc73xx_ops - VSC73xx methods container
* @ read : Method for register reading over the hardware - dependent interface
* @ write : Method for register writing over the hardware - dependent interface
*/
struct vsc73xx_ops {
int (*read)(struct vsc73xx *vsc, u8 block, u8 subblock, u8 reg,
u32 *val);
int (*write)(struct vsc73xx *vsc, u8 block, u8 subblock, u8 reg,
u32 val);
};
/**
* struct vsc73xx_bridge_vlan - VSC73xx driver structure which keeps vlan
* database copy
* @ vid : VLAN number
* @ portmask : each bit represents one port
* @ untagged : each bit represents one port configured with @ vid untagged
* @ list : list structure
*/
struct vsc73xx_bridge_vlan {
u16 vid;
u8 portmask;
u8 untagged;
struct list_head list;
};
int vsc73xx_is_addr_valid(u8 block, u8 subblock);
int vsc73xx_probe(struct vsc73xx *vsc);
void vsc73xx_remove(struct vsc73xx *vsc);
void vsc73xx_shutdown(struct vsc73xx *vsc);
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