1 /*
2 * This program is free software; you can redistribute it and/or
3 * modify it under the terms of the GNU General Public License
4 * as published by the Free Software Foundation; either version
5 * 2 of the License, or (at your option) any later version.
6 */
7 #ifndef _ASM_GENERIC_PCI_BRIDGE_H
8 #define _ASM_GENERIC_PCI_BRIDGE_H
9
10 #ifdef __KERNEL__
11
12 enum {
13 /* Force re-assigning all resources (ignore firmware
14 * setup completely)
15 */
16 PCI_REASSIGN_ALL_RSRC = 0x00000001,
17
18 /* Re-assign all bus numbers */
19 PCI_REASSIGN_ALL_BUS = 0x00000002,
20
21 /* Do not try to assign, just use existing setup */
22 PCI_PROBE_ONLY = 0x00000004,
23
24 /* Don't bother with ISA alignment unless the bridge has
25 * ISA forwarding enabled
26 */
27 PCI_CAN_SKIP_ISA_ALIGN = 0x00000008,
28
29 /* Enable domain numbers in /proc */
30 PCI_ENABLE_PROC_DOMAINS = 0x00000010,
31 /* ... except for domain 0 */
32 PCI_COMPAT_DOMAIN_0 = 0x00000020,
33
34 /* PCIe downstream ports are bridges that normally lead to only a
35 * device 0, but if this is set, we scan all possible devices, not
36 * just device 0.
37 */
38 PCI_SCAN_ALL_PCIE_DEVS = 0x00000040,
39 };
40
41 #ifdef CONFIG_PCI
42 extern unsigned int pci_flags;
43
pci_set_flags(int flags)44 static inline void pci_set_flags(int flags)
45 {
46 pci_flags = flags;
47 }
48
pci_add_flags(int flags)49 static inline void pci_add_flags(int flags)
50 {
51 pci_flags |= flags;
52 }
53
pci_clear_flags(int flags)54 static inline void pci_clear_flags(int flags)
55 {
56 pci_flags &= ~flags;
57 }
58
pci_has_flag(int flag)59 static inline int pci_has_flag(int flag)
60 {
61 return pci_flags & flag;
62 }
63 #else
pci_set_flags(int flags)64 static inline void pci_set_flags(int flags) { }
pci_add_flags(int flags)65 static inline void pci_add_flags(int flags) { }
pci_clear_flags(int flags)66 static inline void pci_clear_flags(int flags) { }
pci_has_flag(int flag)67 static inline int pci_has_flag(int flag)
68 {
69 return 0;
70 }
71 #endif /* CONFIG_PCI */
72
73 #endif /* __KERNEL__ */
74 #endif /* _ASM_GENERIC_PCI_BRIDGE_H */
75