linux/drivers/pci/mmap.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Generic PCI resource mmap helper
 *
 * Copyright © 2017 Amazon.com, Inc. or its affiliates.
 *
 * Author: David Woodhouse <[email protected]>
 */

#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/pci.h>

#include "pci.h"

#ifdef ARCH_GENERIC_PCI_MMAP_RESOURCE

static const struct vm_operations_struct pci_phys_vm_ops = …;

int pci_mmap_resource_range(struct pci_dev *pdev, int bar,
			    struct vm_area_struct *vma,
			    enum pci_mmap_state mmap_state, int write_combine)
{ … }

#endif

#if (defined(CONFIG_SYSFS) || defined(CONFIG_PROC_FS)) && \
    (defined(HAVE_PCI_MMAP) || defined(ARCH_GENERIC_PCI_MMAP_RESOURCE))

int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vma,
		  enum pci_mmap_api mmap_api)
{ … }

#endif