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/* SPDX-License-Identifier: GPL-2.0-only */
/* FSI device & driver interfaces
*
* Copyright (C) IBM Corporation 2016
*/
#ifndef LINUX_FSI_H
#define LINUX_FSI_H
#include <linux/device.h>
struct fsi_device {
struct device dev;
u8 engine_type;
u8 version;
u8 unit;
struct fsi_slave *slave;
uint32_t addr;
uint32_t size;
};
extern int fsi_device_read(struct fsi_device *dev, uint32_t addr,
void *val, size_t size);
extern int fsi_device_write(struct fsi_device *dev, uint32_t addr,
const void *val, size_t size);
extern int fsi_device_peek(struct fsi_device *dev, void *val);
struct fsi_device_id {
u8 engine_type;
u8 version;
};
#define FSI_VERSION_ANY 0
#define FSI_DEVICE(t) \
.engine_type = (t), .version = FSI_VERSION_ANY,
#define FSI_DEVICE_VERSIONED(t, v) \
.engine_type = (t), .version = (v),
struct fsi_driver {
struct device_driver drv;
const struct fsi_device_id *id_table;
};
#define to_fsi_dev(devp) container_of(devp, struct fsi_device, dev)
#define to_fsi_drv(drvp) container_of(drvp, struct fsi_driver, drv)
extern int fsi_driver_register(struct fsi_driver *fsi_drv);
extern void fsi_driver_unregister(struct fsi_driver *fsi_drv);
/* module_fsi_driver() - Helper macro for drivers that don't do
* anything special in module init/exit. This eliminates a lot of
* boilerplate. Each module may only use this macro once, and
* calling it replaces module_init() and module_exit()
*/
#define module_fsi_driver(__fsi_driver) \
module_driver(__fsi_driver, fsi_driver_register, \
fsi_driver_unregister)
/* direct slave API */
extern int fsi_slave_claim_range(struct fsi_slave *slave,
uint32_t addr, uint32_t size);
extern void fsi_slave_release_range(struct fsi_slave *slave,
uint32_t addr, uint32_t size);
extern int fsi_slave_read(struct fsi_slave *slave, uint32_t addr,
void *val, size_t size);
extern int fsi_slave_write(struct fsi_slave *slave, uint32_t addr,
const void *val, size_t size);
extern struct bus_type fsi_bus_type;
extern const struct device_type fsi_cdev_type;
enum fsi_dev_type {
fsi_dev_cfam,
fsi_dev_sbefifo,
fsi_dev_scom,
fsi_dev_occ
};
extern int fsi_get_new_minor(struct fsi_device *fdev, enum fsi_dev_type type,
dev_t *out_dev, int *out_index);
extern void fsi_free_minor(dev_t dev);
#endif /* LINUX_FSI_H */