tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
fork
Configure Feed
Select the types of activity you want to include in your feed.
1// SPDX-License-Identifier: GPL-2.0
2#include <linux/platform_device.h>
3#include <linux/memregion.h>
4#include <linux/module.h>
5#include <linux/pfn_t.h>
6#include "bus.h"
7
8static int dax_hmem_probe(struct platform_device *pdev)
9{
10 struct device *dev = &pdev->dev;
11 struct dev_pagemap pgmap = { };
12 struct dax_region *dax_region;
13 struct memregion_info *mri;
14 struct dev_dax *dev_dax;
15 struct resource *res;
16
17 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
18 if (!res)
19 return -ENOMEM;
20
21 mri = dev->platform_data;
22 memcpy(&pgmap.res, res, sizeof(*res));
23
24 dax_region = alloc_dax_region(dev, pdev->id, res, mri->target_node,
25 PMD_SIZE, PFN_DEV|PFN_MAP);
26 if (!dax_region)
27 return -ENOMEM;
28
29 dev_dax = devm_create_dev_dax(dax_region, 0, &pgmap);
30 if (IS_ERR(dev_dax))
31 return PTR_ERR(dev_dax);
32
33 /* child dev_dax instances now own the lifetime of the dax_region */
34 dax_region_put(dax_region);
35 return 0;
36}
37
38static int dax_hmem_remove(struct platform_device *pdev)
39{
40 /* devm handles teardown */
41 return 0;
42}
43
44static struct platform_driver dax_hmem_driver = {
45 .probe = dax_hmem_probe,
46 .remove = dax_hmem_remove,
47 .driver = {
48 .name = "hmem",
49 },
50};
51
52module_platform_driver(dax_hmem_driver);
53
54MODULE_ALIAS("platform:hmem*");
55MODULE_LICENSE("GPL v2");
56MODULE_AUTHOR("Intel Corporation");