Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[platform/adaptation/renesas_rcar/renesas_kernel.git] / arch / x86 / include / asm / amd_nb.h
1 #ifndef _ASM_X86_AMD_NB_H
2 #define _ASM_X86_AMD_NB_H
3
4 #include <linux/pci.h>
5
6 struct amd_nb_bus_dev_range {
7         u8 bus;
8         u8 dev_base;
9         u8 dev_limit;
10 };
11
12 extern const struct pci_device_id amd_nb_misc_ids[];
13 extern const struct amd_nb_bus_dev_range amd_nb_bus_dev_ranges[];
14 struct bootnode;
15
16 extern bool early_is_amd_nb(u32 value);
17 extern int amd_cache_northbridges(void);
18 extern void amd_flush_garts(void);
19 extern int amd_numa_init(void);
20 extern int amd_get_subcaches(int);
21 extern int amd_set_subcaches(int, int);
22
23 struct amd_northbridge {
24         struct pci_dev *misc;
25         struct pci_dev *link;
26 };
27
28 struct amd_northbridge_info {
29         u16 num;
30         u64 flags;
31         struct amd_northbridge *nb;
32 };
33 extern struct amd_northbridge_info amd_northbridges;
34
35 #define AMD_NB_GART                     BIT(0)
36 #define AMD_NB_L3_INDEX_DISABLE         BIT(1)
37 #define AMD_NB_L3_PARTITIONING          BIT(2)
38
39 #ifdef CONFIG_AMD_NB
40
41 static inline u16 amd_nb_num(void)
42 {
43         return amd_northbridges.num;
44 }
45
46 static inline bool amd_nb_has_feature(unsigned feature)
47 {
48         return ((amd_northbridges.flags & feature) == feature);
49 }
50
51 static inline struct amd_northbridge *node_to_amd_nb(int node)
52 {
53         return (node < amd_northbridges.num) ? &amd_northbridges.nb[node] : NULL;
54 }
55
56 #else
57
58 #define amd_nb_num(x)           0
59 #define amd_nb_has_feature(x)   false
60 #define node_to_amd_nb(x)       NULL
61
62 #endif
63
64
65 #endif /* _ASM_X86_AMD_NB_H */