1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Header file for DFL driver and device API
5 * Copyright (C) 2020 Intel Corporation, Inc.
11 #include <linux/device.h>
12 #include <linux/mod_devicetable.h>
15 * enum dfl_id_type - define the DFL FIU types
24 * struct dfl_device - represent an dfl device on dfl bus
26 * @dev: generic device interface.
27 * @id: id of the dfl device.
28 * @type: type of DFL FIU of the device. See enum dfl_id_type.
29 * @feature_id: feature identifier local to its DFL FIU type.
30 * @mmio_res: mmio resource of this dfl device.
31 * @irqs: list of Linux IRQ numbers of this dfl device.
32 * @num_irqs: number of IRQs supported by this dfl device.
33 * @cdev: pointer to DFL FPGA container device this dfl device belongs to.
34 * @id_entry: matched id entry in dfl driver's id table.
42 struct resource mmio_res;
44 unsigned int num_irqs;
45 struct dfl_fpga_cdev *cdev;
46 const struct dfl_device_id *id_entry;
50 * struct dfl_driver - represent an dfl device driver
52 * @drv: driver model structure.
53 * @id_table: pointer to table of device IDs the driver is interested in.
54 * { } member terminated.
55 * @probe: mandatory callback for device binding.
56 * @remove: callback for device unbinding.
59 struct device_driver drv;
60 const struct dfl_device_id *id_table;
62 int (*probe)(struct dfl_device *dfl_dev);
63 void (*remove)(struct dfl_device *dfl_dev);
66 #define to_dfl_dev(d) container_of(d, struct dfl_device, dev)
67 #define to_dfl_drv(d) container_of(d, struct dfl_driver, drv)
70 * use a macro to avoid include chaining to get THIS_MODULE.
72 #define dfl_driver_register(drv) \
73 __dfl_driver_register(drv, THIS_MODULE)
74 int __dfl_driver_register(struct dfl_driver *dfl_drv, struct module *owner);
75 void dfl_driver_unregister(struct dfl_driver *dfl_drv);
78 * module_dfl_driver() - Helper macro for drivers that don't do
79 * anything special in module init/exit. This eliminates a lot of
80 * boilerplate. Each module may only use this macro once, and
81 * calling it replaces module_init() and module_exit().
83 #define module_dfl_driver(__dfl_driver) \
84 module_driver(__dfl_driver, dfl_driver_register, \
85 dfl_driver_unregister)
87 #endif /* __LINUX_DFL_H */