1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * EISA specific code
 4 */
 5#include <linux/ioport.h>
 6#include <linux/eisa.h>
 7#include <linux/io.h>
 8
 9#include <xen/xen.h>
10
11static __init int eisa_bus_probe(void)
12{
13	void __iomem *p;
14
15	if (xen_pv_domain() && !xen_initial_domain())
16		return 0;
17
18	p = ioremap(0x0FFFD9, 4);
19	if (p && readl(p) == 'E' + ('I' << 8) + ('S' << 16) + ('A' << 24))
20		EISA_bus = 1;
21	iounmap(p);
22	return 0;
23}
24subsys_initcall(eisa_bus_probe);

 1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * EISA specific code
 4 */
 5#include <linux/ioport.h>
 6#include <linux/eisa.h>
 7#include <linux/io.h>
 8
 9#include <xen/xen.h>
10
11static __init int eisa_bus_probe(void)
12{
13	void __iomem *p;
14
15	if (xen_pv_domain() && !xen_initial_domain())
16		return 0;
17
18	p = ioremap(0x0FFFD9, 4);
19	if (p && readl(p) == 'E' + ('I' << 8) + ('S' << 16) + ('A' << 24))
20		EISA_bus = 1;
21	iounmap(p);
22	return 0;
23}
24subsys_initcall(eisa_bus_probe);