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/*
* Google LWIS Register I/O Interface
*
* Copyright (c) 2018 Google, LLC
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef LWIS_IOREG_H_
#define LWIS_IOREG_H_
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/types.h>
#include "lwis_commands.h"
#include "lwis_device_ioreg.h"
/*
* lwis_ioreg_list_alloc: Allocate a lwis_ioreg_list struct with the specified
* number of entries.
*/
int lwis_ioreg_list_alloc(struct lwis_ioreg_device *ioreg_dev, int num_blocks);
/*
* lwis_ioreg_list_free: Deallocate the lwis_ioreg list struct provided.
*/
void lwis_ioreg_list_free(struct lwis_ioreg_device *ioreg_dev);
/*
* lwis_ioreg_get: Setup the content of a lwis_ioreg entry.
*/
int lwis_ioreg_get(struct lwis_ioreg_device *ioreg_dev, int index, char *name);
/*
* lwis_ioreg_put_by_idx: Deinitialize the content of a lwis_ioreg entry
* by index.
*/
int lwis_ioreg_put_by_idx(struct lwis_ioreg_device *ioreg_dev, int index);
/*
* lwis_ioreg_put_by_name: Deinitialize the content of a lwis_ioreg entry
* by name.
*/
int lwis_ioreg_put_by_name(struct lwis_ioreg_device *ioreg_dev, char *name);
/*
* lwis_ioreg_io_entry_rw: Read/write registers via io_entry request.
*/
int lwis_ioreg_io_entry_rw(struct lwis_ioreg_device *ioreg_dev, struct lwis_io_entry *entry,
int access_size);
/*
* lwis_ioreg_read: Read single register.
*/
int lwis_ioreg_read(struct lwis_ioreg_device *ioreg_dev, int index, uint64_t offset,
uint64_t *value, int access_size);
/*
* lwis_ioreg_write: Write single register.
*/
int lwis_ioreg_write(struct lwis_ioreg_device *ioreg_dev, int index, uint64_t offset,
uint64_t value, int access_size);
/*
* lwis_ioreg_set_io_barrier: Use read/write memory barriers.
*/
int lwis_ioreg_set_io_barrier(struct lwis_ioreg_device *ioreg_dev, bool use_read_barrier,
bool use_write_barrier);
#endif /* LWIS_IOREG_H_ */
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