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     ˆÇÆƒ¯;ÅÁÃ û    /* SPDX-License-Identifier: GPL-2.0-only */
#ifndef __LINUX_CPU_RMAP_H
#define __LINUX_CPU_RMAP_H

/*
 * cpu_rmap.c: CPU affinity reverse-map support
 * Copyright 2011 Solarflare Communications Inc.
 */

#include <linux/cpumask.h>
#include <linux/gfp.h>
#include <linux/slab.h>
#include <linux/kref.h>

/**
 * struct cpu_rmap - CPU affinity reverse-map
 * @refcount: kref for object
 * @size: Number of objects to be reverse-mapped
 * @obj: Pointer to array of object pointers
 * @near: For each CPU, the index and distance to the nearest object,
 *      based on affinity masks
 */
struct cpu_rmap {
	struct kref	refcount;
	u16		size;
	void		**obj;
	struct {
		u16	index;
		u16	dist;
	}		near[];
};
#define CPU_RMAP_DIST_INF 0xffff

extern struct cpu_rmap *alloc_cpu_rmap(unsigned int size, gfp_t flags);
extern void cpu_rmap_get(struct cpu_rmap *rmap);
extern int cpu_rmap_put(struct cpu_rmap *rmap);

extern int cpu_rmap_add(struct cpu_rmap *rmap, void *obj);
extern int cpu_rmap_update(struct cpu_rmap *rmap, u16 index,
			   const struct cpumask *affinity);

static inline u16 cpu_rmap_lookup_index(struct cpu_rmap *rmap, unsigned int cpu)
{
	return rmap->near[cpu].index;
}

static inline void *cpu_rmap_lookup_obj(struct cpu_rmap *rmap, unsigned int cpu)
{
	return rmap->obj[rmap->near[cpu].index];
}

/**
 * alloc_irq_cpu_rmap - allocate CPU affinity reverse-map for IRQs
 * @size: Number of objects to be mapped
 *
 * Must be called in process context.
 */
static inline struct cpu_rmap *alloc_irq_cpu_rmap(unsigned int size)
{
	return alloc_cpu_rmap(size, GFP_KERNEL);
}
extern void free_irq_cpu_rmap(struct cpu_rmap *rmap);

int irq_cpu_rmap_remove(struct cpu_rmap *rmap, int irq);
extern int irq_cpu_rmap_add(struct cpu_rmap *rmap, int irq);

#endif /* __LINUX_CPU_RMAP_H */
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     ˆÈÇƒ!gÆ¾Ä 		    /* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) 2015 Pengutronix, Uwe Kleine-KÃ¶nig <kernel@pengutronix.de>
 */

#include <linux/device.h>

#define to_siox_device(_dev)	container_of((_dev), struct siox_device, dev)
struct siox_device {
	struct list_head node; /* node in smaster->devices */
	struct siox_master *smaster;
	struct device dev;

	const char *type;
	size_t inbytes;
	size_t outbytes;
	u8 statustype;

	u8 status_read_clean;
	u8 status_written;
	u8 status_written_lastcycle;
	bool connected;

	/* statistics */
	unsigned int watchdog_errors;
	unsigned int status_errors;

	struct kernfs_node *status_errors_kn;
	struct kernfs_node *watchdog_kn;
	struct kernfs_node *watchdog_errors_kn;
	struct kernfs_node *connected_kn;
};

bool siox_device_synced(struct siox_device *sdevice);
bool siox_device_connected(struct siox_device *sdevice);

struct siox_driver {
	int (*probe)(struct siox_device *sdevice);
	void (*remove)(struct siox_device *sdevice);
	void (*shutdown)(struct siox_device *sdevice);

	/*
	 * buf is big enough to hold sdev->inbytes - 1 bytes, the status byte
	 * is in the scope of the framework.
	 */
	int (*set_data)(struct siox_device *sdevice, u8 status, u8 buf[]);
	/*
	 * buf is big enough to hold sdev->outbytes - 1 bytes, the status byte
	 * is in the scope of the framework
	 */
	int (*get_data)(struct siox_device *sdevice, const u8 buf[]);

	struct device_driver driver;
};

static inline struct siox_driver *to_siox_driver(struct device_driver *driver)
{
	if (driver)
		return container_of(driver, struct siox_driver, driver);
	else
		return NULL;
}

int __siox_driver_register(struct siox_driver *sdriver, struct module *owner);

static inline int siox_driver_register(struct siox_driver *sdriver)
{
	return __siox_driver_register(sdriver, THIS_MODULE);
}

static inline void siox_driver_unregister(struct siox_driver *sdriver)
{
	return driver_unregister(&sdriver->driver);
}

/*
 * module_siox_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(