linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 * resource.c - Contains functions for registering and analyzing resource information

 *

 * based on isapnp.c resource management (c) Jaroslav Kysela <perex@perex.cz>

 * Copyright 2003 Adam Belay <ambx1@neo.rr.com>

 * Copyright (C) 2008 Hewlett-Packard Development Company, L.P.

 *  Bjorn Helgaas <bjorn.helgaas@hp.com>

 */

​

#include <linux/module.h>

#include <linux/slab.h>

#include <linux/errno.h>

#include <linux/interrupt.h>

#include <linux/kernel.h>

#include <asm/io.h>

#include <asm/dma.h>

#include <asm/irq.h>

#include <linux/pci.h>

#include <linux/ioport.h>

#include <linux/init.h>

​

#include <linux/pnp.h>

#include "base.h"

​

static int pnp_reserve_irq[16] = {[0 ... 15] = -1 };    /* reserve (don't use) some IRQ */

static int pnp_reserve_dma[8] = {[0 ... 7] = -1 };  /* reserve (don't use) some DMA */

static int pnp_reserve_io[16] = {[0 ... 15] = -1 }; /* reserve (don't use) some I/O region */

static int pnp_reserve_mem[16] = {[0 ... 15] = -1 };    /* reserve (don't use) some memory region */

​

/*

 * option registration

 */

​

static struct pnp_option *pnp_build_option(struct pnp_dev *dev, unsigned long type,

                    unsigned int option_flags)

{

    struct pnp_option *option;

​

    option = kzalloc(sizeof(struct pnp_option), GFP_KERNEL);

    if (!option)

        return NULL;

​

    option->flags = option_flags;

    option->type = type;

​

    list_add_tail(&option->list, &dev->options);

    return option;

}

​

int pnp_register_irq_resource(struct pnp_dev *dev, unsigned int option_flags,

                  pnp_irq_mask_t *map, unsigned char flags)

{

    struct pnp_option *option;

    struct pnp_irq *irq;

​

    option = pnp_build_option(dev, IORESOURCE_IRQ, option_flags);

    if (!option)

        return -ENOMEM;

​

    irq = &option->u.irq;

    irq->map = *map;

    irq->flags = flags;