tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef _ASM_X86_AMD_NB_H
2#define _ASM_X86_AMD_NB_H
3
4#include <linux/ioport.h>
5#include <linux/pci.h>
6
7struct amd_nb_bus_dev_range {
8 u8 bus;
9 u8 dev_base;
10 u8 dev_limit;
11};
12
13extern const struct pci_device_id amd_nb_misc_ids[];
14extern const struct amd_nb_bus_dev_range amd_nb_bus_dev_ranges[];
15
16extern bool early_is_amd_nb(u32 value);
17extern struct resource *amd_get_mmconfig_range(struct resource *res);
18extern int amd_cache_northbridges(void);
19extern void amd_flush_garts(void);
20extern int amd_numa_init(void);
21extern int amd_get_subcaches(int);
22extern int amd_set_subcaches(int, int);
23
24struct amd_l3_cache {
25 unsigned indices;
26 u8 subcaches[4];
27};
28
29struct amd_northbridge {
30 struct pci_dev *misc;
31 struct pci_dev *link;
32 struct amd_l3_cache l3_cache;
33};
34
35struct amd_northbridge_info {
36 u16 num;
37 u64 flags;
38 struct amd_northbridge *nb;
39};
40extern struct amd_northbridge_info amd_northbridges;
41
42#define AMD_NB_GART BIT(0)
43#define AMD_NB_L3_INDEX_DISABLE BIT(1)
44#define AMD_NB_L3_PARTITIONING BIT(2)
45
46#ifdef CONFIG_AMD_NB
47
48static inline u16 amd_nb_num(void)
49{
50 return amd_northbridges.num;
51}
52
53static inline bool amd_nb_has_feature(unsigned feature)
54{
55 return ((amd_northbridges.flags & feature) == feature);
56}
57
58static inline struct amd_northbridge *node_to_amd_nb(int node)
59{
60 return (node < amd_northbridges.num) ? &amd_northbridges.nb[node] : NULL;
61}
62
63#else
64
65#define amd_nb_num(x) 0
66#define amd_nb_has_feature(x) false
67#define node_to_amd_nb(x) NULL
68
69#endif
70
71
72#endif /* _ASM_X86_AMD_NB_H */