1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _XEN_PLATFORM_PCI_H
3 #define _XEN_PLATFORM_PCI_H
4
5 #define XEN_IOPORT_MAGIC_VAL 0x49d2
6 #define XEN_IOPORT_LINUX_PRODNUM 0x0003
7 #define XEN_IOPORT_LINUX_DRVVER 0x0001
8
9 #define XEN_IOPORT_BASE 0x10
10
11 #define XEN_IOPORT_PLATFLAGS (XEN_IOPORT_BASE + 0) /* 1 byte access (R/W) */
12 #define XEN_IOPORT_MAGIC (XEN_IOPORT_BASE + 0) /* 2 byte access (R) */
13 #define XEN_IOPORT_UNPLUG (XEN_IOPORT_BASE + 0) /* 2 byte access (W) */
14 #define XEN_IOPORT_DRVVER (XEN_IOPORT_BASE + 0) /* 4 byte access (W) */
15
16 #define XEN_IOPORT_SYSLOG (XEN_IOPORT_BASE + 2) /* 1 byte access (W) */
17 #define XEN_IOPORT_PROTOVER (XEN_IOPORT_BASE + 2) /* 1 byte access (R) */
18 #define XEN_IOPORT_PRODNUM (XEN_IOPORT_BASE + 2) /* 2 byte access (W) */
19
20 #define XEN_UNPLUG_ALL_IDE_DISKS (1<<0)
21 #define XEN_UNPLUG_ALL_NICS (1<<1)
22 #define XEN_UNPLUG_AUX_IDE_DISKS (1<<2)
23 #define XEN_UNPLUG_ALL (XEN_UNPLUG_ALL_IDE_DISKS|\
24 XEN_UNPLUG_ALL_NICS|\
25 XEN_UNPLUG_AUX_IDE_DISKS)
26
27 #define XEN_UNPLUG_UNNECESSARY (1<<16)
28 #define XEN_UNPLUG_NEVER (1<<17)
29
30 static inline int xen_must_unplug_nics(void) {
31 #if (defined(CONFIG_XEN_NETDEV_FRONTEND) || \
32 defined(CONFIG_XEN_NETDEV_FRONTEND_MODULE)) && \
33 defined(CONFIG_XEN_PVHVM)
34 return 1;
35 #else
36 return 0;
37 #endif
38 }
39
40 static inline int xen_must_unplug_disks(void) {
41 #if (defined(CONFIG_XEN_BLKDEV_FRONTEND) || \
42 defined(CONFIG_XEN_BLKDEV_FRONTEND_MODULE)) && \
43 defined(CONFIG_XEN_PVHVM)
44 return 1;
45 #else
46 return 0;
47 #endif
48 }
49
50 #if defined(CONFIG_XEN_PVHVM)
51 extern bool xen_has_pv_devices(void);
52 extern bool xen_has_pv_disk_devices(void);
53 extern bool xen_has_pv_nic_devices(void);
54 extern bool xen_has_pv_and_legacy_disk_devices(void);
55 #else
56 static inline bool xen_has_pv_devices(void)
57 {
58 return IS_ENABLED(CONFIG_XEN);
59 }
60 static inline bool xen_has_pv_disk_devices(void)
61 {
62 return IS_ENABLED(CONFIG_XEN);
63 }
64 static inline bool xen_has_pv_nic_devices(void)
65 {
66 return IS_ENABLED(CONFIG_XEN);
67 }
68 static inline bool xen_has_pv_and_legacy_disk_devices(void)
69 {
70 return false;
71 }
72 #endif
73 #endif /* _XEN_PLATFORM_PCI_H */
74
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.