linux/drivers/pci/hotplug/acpi_pcihp.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Common ACPI functions for hot plug platforms
 *
 * Copyright (C) 2006 Intel Corporation
 *
 * All rights reserved.
 *
 * Send feedback to <[email protected]>
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/pci_hotplug.h>
#include <linux/acpi.h>
#include <linux/pci-acpi.h>
#include <linux/slab.h>

#define MY_NAME …

#define dbg(fmt, arg...) …
#define err(format, arg...) …
#define info(format, arg...) …
#define warn(format, arg...) …

#define METHOD_NAME__SUN …
#define METHOD_NAME_OSHP …

static bool debug_acpi;

/* acpi_run_oshp - get control of hotplug from the firmware
 *
 * @handle - the handle of the hotplug controller.
 */
static acpi_status acpi_run_oshp(acpi_handle handle)
{ … }

/**
 * acpi_get_hp_hw_control_from_firmware
 * @pdev: the pci_dev of the bridge that has a hotplug controller
 *
 * Attempt to take hotplug control from firmware.
 */
int acpi_get_hp_hw_control_from_firmware(struct pci_dev *pdev)
{ … }
EXPORT_SYMBOL(…);

static int pcihp_is_ejectable(acpi_handle handle)
{ … }

/**
 * acpi_pci_check_ejectable - check if handle is ejectable ACPI PCI slot
 * @pbus: the PCI bus of the PCI slot corresponding to 'handle'
 * @handle: ACPI handle to check
 *
 * Return 1 if handle is ejectable PCI slot, 0 otherwise.
 */
int acpi_pci_check_ejectable(struct pci_bus *pbus, acpi_handle handle)
{ … }
EXPORT_SYMBOL_GPL(…);

static acpi_status
check_hotplug(acpi_handle handle, u32 lvl, void *context, void **rv)
{ … }

/**
 * acpi_pci_detect_ejectable - check if the PCI bus has ejectable slots
 * @handle: handle of the PCI bus to scan
 *
 * Returns 1 if the PCI bus has ACPI based ejectable slots, 0 otherwise.
 */
int acpi_pci_detect_ejectable(acpi_handle handle)
{ … }
EXPORT_SYMBOL_GPL(…);

module_param(debug_acpi, bool, 0644);
MODULE_PARM_DESC(…) …;