/*
 * Copyright (c) 2014-2016, Intel Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 */
#include "test/nfit_test.h"
#include <linux/blkdev.h>
#include <pmem.h>
#include <nd.h>

long pmem_direct_access(struct block_device *bdev, sector_t sector,
		void **kaddr, pfn_t *pfn, long size)
{
	struct pmem_device *pmem = bdev->bd_queue->queuedata;
	resource_size_t offset = sector * 512 + pmem->data_offset;

	if (unlikely(is_bad_pmem(&pmem->bb, sector, size)))
		return -EIO;

	/*
	 * Limit dax to a single page at a time given vmalloc()-backed
	 * in the nfit_test case.
	 */
	if (get_nfit_res(pmem->phys_addr + offset)) {
		struct page *page;

		*kaddr = pmem->virt_addr + offset;
		page = vmalloc_to_page(pmem->virt_addr + offset);
		*pfn = page_to_pfn_t(page);
		dev_dbg_ratelimited(disk_to_dev(bdev->bd_disk)->parent,
				"%s: sector: %#llx pfn: %#lx\n", __func__,
				(unsigned long long) sector, page_to_pfn(page));

		return PAGE_SIZE;
	}

	*kaddr = pmem->virt_addr + offset;
	*pfn = phys_to_pfn_t(pmem->phys_addr + offset, pmem->pfn_flags);

	/*
	 * If badblocks are present, limit known good range to the
	 * requested range.
	 */
	if (unlikely(pmem->bb.count))
		return size;
	return pmem->size - pmem->pfn_pad - offset;
}
class='active' href='/cgit.cgi/linux/net-next.git/log/net/bluetooth/rfcomm/Makefile'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/net/bluetooth/rfcomm/Makefile?id=6e2de20ddc4b606a9b6b170a6bb21ee4dc4ad93a'>tree</a><a href='/cgit.cgi/linux/net-next.git/commit/net/bluetooth/rfcomm/Makefile?id=6e2de20ddc4b606a9b6b170a6bb21ee4dc4ad93a'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/net/bluetooth/rfcomm/Makefile?id=6e2de20ddc4b606a9b6b170a6bb21ee4dc4ad93a'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/net/bluetooth/rfcomm/Makefile'>
<input type='hidden' name='id' value='6e2de20ddc4b606a9b6b170a6bb21ee4dc4ad93a'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=6e2de20ddc4b606a9b6b170a6bb21ee4dc4ad93a'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/net?id=6e2de20ddc4b606a9b6b170a6bb21ee4dc4ad93a'>net</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/bluetooth?id=6e2de20ddc4b606a9b6b170a6bb21ee4dc4ad93a'>bluetooth</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/bluetooth/rfcomm?id=6e2de20ddc4b606a9b6b170a6bb21ee4dc4ad93a'>rfcomm</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/bluetooth/rfcomm/Makefile?id=6e2de20ddc4b606a9b6b170a6bb21ee4dc4ad93a'>Makefile</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/net/bluetooth/rfcomm/Makefile?id=6e2de20ddc4b606a9b6b170a6bb21ee4dc4ad93a&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>