FPGA Bridge

API to implement a new FPGA bridge

struct fpga_bridge

FPGA bridge structure

Definition:

struct fpga_bridge {
    const char *name;
    struct device dev;
    struct mutex mutex;
    const struct fpga_bridge_ops *br_ops;
    struct fpga_image_info *info;
    struct list_head node;
    void *priv;
};

Members

name

name of low level FPGA bridge

dev

FPGA bridge device

mutex

enforces exclusive reference to bridge

br_ops

pointer to struct of FPGA bridge ops

info

fpga image specific information

node

FPGA bridge list node

priv

low level driver private date

struct fpga_bridge_ops

ops for low level FPGA bridge drivers

Definition:

struct fpga_bridge_ops {
    int (*enable_show)(struct fpga_bridge *bridge);
    int (*enable_set)(struct fpga_bridge *bridge, bool enable);
    void (*fpga_bridge_remove)(struct fpga_bridge *bridge);
    const struct attribute_group **groups;
};

Members

enable_show

returns the FPGA bridge’s status

enable_set

set an FPGA bridge as enabled or disabled

fpga_bridge_remove

set FPGA into a specific state during driver remove

groups

optional attribute groups.

struct fpga_bridge *fpga_bridge_register(struct device *parent, const char *name, const struct fpga_bridge_ops *br_ops, void *priv)

create and register an FPGA Bridge device

Parameters

struct device *parent

FPGA bridge device from pdev

const char *name

FPGA bridge name

const struct fpga_bridge_ops *br_ops

pointer to structure of fpga bridge ops

void *priv

FPGA bridge private data

Return

struct fpga_bridge pointer or ERR_PTR()

void fpga_bridge_unregister(struct fpga_bridge *bridge)

unregister an FPGA bridge

Parameters

struct fpga_bridge *bridge

FPGA bridge struct

Description

This function is intended for use in an FPGA bridge driver’s remove function.