1 /* 2 * EISA specific code 3 * 4 * This file is licensed under the GPL V2 5 */ 6 #include <linux/ioport.h> 7 #include <linux/eisa.h> 8 #include <linux/io.h> 9 10 #include <xen/xen.h> 11 12 static __init int eisa_bus_probe(void) 13 { 14 void __iomem *p; 15 16 if (xen_pv_domain() && !xen_initial_domain()) 17 return 0; 18 19 p = ioremap(0x0FFFD9, 4); 20 if (p && readl(p) == 'E' + ('I' << 8) + ('S' << 16) + ('A' << 24)) 21 EISA_bus = 1; 22 iounmap(p); 23 return 0; 24 } 25 subsys_initcall(eisa_bus_probe); 26