/*
 * Copyright (C) 2014 Marvell
 * Author: Gregory CLEMENT <gregory.clement@free-electrons.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 */

#include <linux/io.h>
#include <linux/mbus.h>
#include <linux/of.h>
#include <linux/platform_device.h>

#include <linux/usb.h>
#include <linux/usb/hcd.h>

#include "xhci-mvebu.h"

#define USB3_MAX_WINDOWS	4
#define USB3_WIN_CTRL(w)	(0x0 + ((w) * 8))
#define USB3_WIN_BASE(w)	(0x4 + ((w) * 8))

static void xhci_mvebu_mbus_config(void __iomem *base,
			const struct mbus_dram_target_info *dram)
{
	int win;

	/* Clear all existing windows */
	for (win = 0; win < USB3_MAX_WINDOWS; win++) {
		writel(0, base + USB3_WIN_CTRL(win));
		writel(0, base + USB3_WIN_BASE(win));
	}

	/* Program each DRAM CS in a seperate window */
	for (win = 0; win < dram->num_cs; win++) {
		const struct mbus_dram_window *cs = dram->cs + win;

		writel(((cs->size - 1) & 0xffff0000) | (cs->mbus_attr << 8) |
		       (dram->mbus_dram_target_id << 4) | 1,
		       base + USB3_WIN_CTRL(win));

		writel((cs->base & 0xffff0000), base + USB3_WIN_BASE(win));
	}
}

int xhci_mvebu_mbus_init_quirk(struct usb_hcd *hcd)
{
	struct device *dev = hcd->self.controller;
	struct platform_device *pdev = to_platform_device(dev);
	struct resource	*res;
	void __iomem *base;
	const struct mbus_dram_target_info *dram;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
	if (!res)
		return -ENODEV;

	/*
	 * We don't use devm_ioremap() because this mapping should
	 * only exists for the duration of this probe function.
	 */
	base = ioremap(res->start, resource_size(res));
	if (!base)
		return -ENODEV;

	dram = mv_mbus_dram_info();
	xhci_mvebu_mbus_config(base, dram);

	/*
	 * This memory area was only needed to configure the MBus
	 * windows, and is therefore no longer useful.
	 */
	iounmap(base);

	return 0;
}
/cgit.cgi/linux/net-next.git/diff/include/net/netns/hash.h?id=cd44691f7177b2c1e1509d1a17d9b198ebaa34eb'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/include/net/netns/hash.h'>
<input type='hidden' name='id' value='cd44691f7177b2c1e1509d1a17d9b198ebaa34eb'/><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=cd44691f7177b2c1e1509d1a17d9b198ebaa34eb'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/include?id=cd44691f7177b2c1e1509d1a17d9b198ebaa34eb'>include</a>/<a href='/cgit.cgi/linux/net-next.git/log/include/net?id=cd44691f7177b2c1e1509d1a17d9b198ebaa34eb'>net</a>/<a href='/cgit.cgi/linux/net-next.git/log/include/net/netns?id=cd44691f7177b2c1e1509d1a17d9b198ebaa34eb'>netns</a>/<a href='/cgit.cgi/linux/net-next.git/log/include/net/netns/hash.h?id=cd44691f7177b2c1e1509d1a17d9b198ebaa34eb'>hash.h</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/include/net/netns/hash.h?id=cd44691f7177b2c1e1509d1a17d9b198ebaa34eb&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>