linux/drivers/pnp/manager.c

// SPDX-License-Identifier: GPL-2.0
/*
 * manager.c - Resource Management, Conflict Resolution, Activation and Disabling of Devices
 *
 * based on isapnp.c resource management (c) Jaroslav Kysela <[email protected]>
 * Copyright 2003 Adam Belay <[email protected]>
 * Copyright (C) 2008 Hewlett-Packard Development Company, L.P.
 *	Bjorn Helgaas <[email protected]>
 */

#include <linux/errno.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/pnp.h>
#include <linux/bitmap.h>
#include <linux/mutex.h>
#include "base.h"

DEFINE_MUTEX(…) …;

static struct resource *pnp_find_resource(struct pnp_dev *dev,
					  unsigned char rule,
					  unsigned long type,
					  unsigned int bar)
{ … }

static int pnp_assign_port(struct pnp_dev *dev, struct pnp_port *rule, int idx)
{ … }

static int pnp_assign_mem(struct pnp_dev *dev, struct pnp_mem *rule, int idx)
{ … }

static int pnp_assign_irq(struct pnp_dev *dev, struct pnp_irq *rule, int idx)
{ … }

#ifdef CONFIG_ISA_DMA_API
static int pnp_assign_dma(struct pnp_dev *dev, struct pnp_dma *rule, int idx)
{ … }
#endif /* CONFIG_ISA_DMA_API */

void pnp_init_resources(struct pnp_dev *dev)
{ … }

static void pnp_clean_resource_table(struct pnp_dev *dev)
{ … }

/**
 * pnp_assign_resources - assigns resources to the device based on the specified dependent number
 * @dev: pointer to the desired device
 * @set: the dependent function number
 */
static int pnp_assign_resources(struct pnp_dev *dev, int set)
{ … }

/**
 * pnp_auto_config_dev - automatically assigns resources to a device
 * @dev: pointer to the desired device
 */
int pnp_auto_config_dev(struct pnp_dev *dev)
{ … }

/**
 * pnp_start_dev - low-level start of the PnP device
 * @dev: pointer to the desired device
 *
 * assumes that resources have already been allocated
 */
int pnp_start_dev(struct pnp_dev *dev)
{ … }
EXPORT_SYMBOL(…);

/**
 * pnp_stop_dev - low-level disable of the PnP device
 * @dev: pointer to the desired device
 *
 * does not free resources
 */
int pnp_stop_dev(struct pnp_dev *dev)
{ … }
EXPORT_SYMBOL(…);

/**
 * pnp_activate_dev - activates a PnP device for use
 * @dev: pointer to the desired device
 *
 * does not validate or set resources so be careful.
 */
int pnp_activate_dev(struct pnp_dev *dev)
{ … }
EXPORT_SYMBOL(…);

/**
 * pnp_disable_dev - disables device
 * @dev: pointer to the desired device
 *
 * inform the correct pnp protocol so that resources can be used by other devices
 */
int pnp_disable_dev(struct pnp_dev *dev)
{ … }
EXPORT_SYMBOL(…);