36 lines
829 B
C
36 lines
829 B
C
|
// SPDX-License-Identifier: GPL-2.0-only
|
||
|
|
/* Copyright(c) 2021 Intel Corporation. All rights reserved. */
|
||
|
|
|
||
|
|
#include <linux/platform_device.h>
|
||
|
|
#include <linux/device.h>
|
||
|
|
#include <linux/acpi.h>
|
||
|
|
#include <cxl.h>
|
||
|
|
#include "test/mock.h"
|
||
|
|
|
||
|
|
struct acpi_device *to_cxl_host_bridge(struct device *host, struct device *dev)
|
||
|
|
{
|
||
|
|
int index;
|
||
|
|
struct acpi_device *adev, *found = NULL;
|
||
|
|
struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);
|
||
|
|
|
||
|
|
if (ops && ops->is_mock_bridge(dev)) {
|
||
|
|
found = ACPI_COMPANION(dev);
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (dev->bus == &platform_bus_type)
|
||
|
|
goto out;
|
||
|
|
|
||
|
|
adev = to_acpi_device(dev);
|
||
|
|
if (!acpi_pci_find_root(adev->handle))
|
||
|
|
goto out;
|
||
|
|
|
||
|
|
if (strcmp(acpi_device_hid(adev), "ACPI0016") == 0) {
|
||
|
|
found = adev;
|
||
|
|
dev_dbg(host, "found host bridge %s\n", dev_name(&adev->dev));
|
||
|
|
}
|
||
|
|
out:
|
||
|
|
put_cxl_mock_ops(index);
|
||
|
|
return found;
|
||
|
|
}
|