1 #ifndef _XEN_PLATFORM_PCI_H
2 #define _XEN_PLATFORM_PCI_H
3 
4 #define XEN_IOPORT_MAGIC_VAL 0x49d2
5 #define XEN_IOPORT_LINUX_PRODNUM 0x0003
6 #define XEN_IOPORT_LINUX_DRVVER  0x0001
7 
8 #define XEN_IOPORT_BASE 0x10
9 
10 #define XEN_IOPORT_PLATFLAGS	(XEN_IOPORT_BASE + 0) /* 1 byte access (R/W) */
11 #define XEN_IOPORT_MAGIC	(XEN_IOPORT_BASE + 0) /* 2 byte access (R) */
12 #define XEN_IOPORT_UNPLUG	(XEN_IOPORT_BASE + 0) /* 2 byte access (W) */
13 #define XEN_IOPORT_DRVVER	(XEN_IOPORT_BASE + 0) /* 4 byte access (W) */
14 
15 #define XEN_IOPORT_SYSLOG	(XEN_IOPORT_BASE + 2) /* 1 byte access (W) */
16 #define XEN_IOPORT_PROTOVER	(XEN_IOPORT_BASE + 2) /* 1 byte access (R) */
17 #define XEN_IOPORT_PRODNUM	(XEN_IOPORT_BASE + 2) /* 2 byte access (W) */
18 
19 #define XEN_UNPLUG_ALL_IDE_DISKS	(1<<0)
20 #define XEN_UNPLUG_ALL_NICS		(1<<1)
21 #define XEN_UNPLUG_AUX_IDE_DISKS	(1<<2)
22 #define XEN_UNPLUG_ALL			(XEN_UNPLUG_ALL_IDE_DISKS|\
23 					 XEN_UNPLUG_ALL_NICS|\
24 					 XEN_UNPLUG_AUX_IDE_DISKS)
25 
26 #define XEN_UNPLUG_UNNECESSARY 		(1<<16)
27 #define XEN_UNPLUG_NEVER	 		(1<<17)
28 
xen_must_unplug_nics(void)29 static inline int xen_must_unplug_nics(void) {
30 #if (defined(CONFIG_XEN_NETDEV_FRONTEND) || \
31 		defined(CONFIG_XEN_NETDEV_FRONTEND_MODULE)) && \
32 		defined(CONFIG_XEN_PVHVM)
33         return 1;
34 #else
35         return 0;
36 #endif
37 }
38 
xen_must_unplug_disks(void)39 static inline int xen_must_unplug_disks(void) {
40 #if (defined(CONFIG_XEN_BLKDEV_FRONTEND) || \
41 		defined(CONFIG_XEN_BLKDEV_FRONTEND_MODULE)) && \
42 		defined(CONFIG_XEN_PVHVM)
43         return 1;
44 #else
45         return 0;
46 #endif
47 }
48 
49 extern int xen_platform_pci_unplug;
50 
51 #endif /* _XEN_PLATFORM_PCI_H */
52