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 | |