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075e3d30e4
This commit introduces implementations of three functions: .port_fdb_dump .port_fdb_add .port_fdb_del The FDB database organization is the same as in other old Vitesse chips: It has 2048 rows and 4 columns (buckets). The row index is calculated by the hash function 'vsc73xx_calc_hash' and the FDB entry must be placed exactly into row[hash]. The chip selects the bucket number by itself. Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com> Link: https://patch.msgid.link/20240827123938.582789-1-paweldembicki@gmail.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
95 lines
3.0 KiB
C
95 lines
3.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#include <linux/device.h>
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#include <linux/etherdevice.h>
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#include <linux/gpio/driver.h>
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/* The VSC7395 switch chips have 5+1 ports which means 5 ordinary ports and
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* a sixth CPU port facing the processor with an RGMII interface. These ports
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* are numbered 0..4 and 6, so they leave a "hole" in the port map for port 5,
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* which is invalid.
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*
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* The VSC7398 has 8 ports, port 7 is again the CPU port.
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*
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* We allocate 8 ports and avoid access to the nonexistent ports.
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*/
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#define VSC73XX_MAX_NUM_PORTS 8
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/**
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* struct vsc73xx_portinfo - port data structure: contains storage data
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* @pvid_vlan_filtering: pvid vlan number used in vlan filtering mode
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* @pvid_tag_8021q: pvid vlan number used in tag_8021q mode
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* @pvid_vlan_filtering_configured: informs if port has configured pvid in vlan
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* filtering mode
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* @pvid_tag_8021q_configured: imforms if port have configured pvid in tag_8021q
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* mode
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*/
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struct vsc73xx_portinfo {
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u16 pvid_vlan_filtering;
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u16 pvid_tag_8021q;
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bool pvid_vlan_filtering_configured;
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bool pvid_tag_8021q_configured;
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};
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/**
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* struct vsc73xx - VSC73xx state container: main data structure
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* @dev: The device pointer
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* @reset: The descriptor for the GPIO line tied to the reset pin
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* @ds: Pointer to the DSA core structure
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* @gc: Main structure of the GPIO controller
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* @chipid: Storage for the Chip ID value read from the CHIPID register of the
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* switch
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* @addr: MAC address used in flow control frames
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* @ops: Structure with hardware-dependent operations
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* @priv: Pointer to the configuration interface structure
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* @portinfo: Storage table portinfo structructures
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* @vlans: List of configured vlans. Contains port mask and untagged status of
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* every vlan configured in port vlan operation. It doesn't cover tag_8021q
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* vlans.
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* @fdb_lock: Mutex protects fdb access
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*/
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struct vsc73xx {
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struct device *dev;
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struct gpio_desc *reset;
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struct dsa_switch *ds;
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struct gpio_chip gc;
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u16 chipid;
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u8 addr[ETH_ALEN];
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const struct vsc73xx_ops *ops;
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void *priv;
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struct vsc73xx_portinfo portinfo[VSC73XX_MAX_NUM_PORTS];
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struct list_head vlans;
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struct mutex fdb_lock;
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};
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/**
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* struct vsc73xx_ops - VSC73xx methods container
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* @read: Method for register reading over the hardware-dependent interface
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* @write: Method for register writing over the hardware-dependent interface
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*/
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struct vsc73xx_ops {
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int (*read)(struct vsc73xx *vsc, u8 block, u8 subblock, u8 reg,
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u32 *val);
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int (*write)(struct vsc73xx *vsc, u8 block, u8 subblock, u8 reg,
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u32 val);
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};
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/**
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* struct vsc73xx_bridge_vlan - VSC73xx driver structure which keeps vlan
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* database copy
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* @vid: VLAN number
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* @portmask: each bit represents one port
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* @untagged: each bit represents one port configured with @vid untagged
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* @list: list structure
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*/
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struct vsc73xx_bridge_vlan {
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u16 vid;
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u8 portmask;
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u8 untagged;
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struct list_head list;
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};
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int vsc73xx_is_addr_valid(u8 block, u8 subblock);
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int vsc73xx_probe(struct vsc73xx *vsc);
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void vsc73xx_remove(struct vsc73xx *vsc);
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void vsc73xx_shutdown(struct vsc73xx *vsc);
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