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Linux kernel mirror (for testing)
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kernel
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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, unsigned long);
23
24struct amd_l3_cache {
25 unsigned indices;
26 u8 subcaches[4];
27};
28
29struct threshold_block {
30 unsigned int block;
31 unsigned int bank;
32 unsigned int cpu;
33 u32 address;
34 u16 interrupt_enable;
35 bool interrupt_capable;
36 u16 threshold_limit;
37 struct kobject kobj;
38 struct list_head miscj;
39};
40
41struct threshold_bank {
42 struct kobject *kobj;
43 struct threshold_block *blocks;
44
45 /* initialized to the number of CPUs on the node sharing this bank */
46 atomic_t cpus;
47};
48
49struct amd_northbridge {
50 struct pci_dev *misc;
51 struct pci_dev *link;
52 struct amd_l3_cache l3_cache;
53 struct threshold_bank *bank4;
54};
55
56struct amd_northbridge_info {
57 u16 num;
58 u64 flags;
59 struct amd_northbridge *nb;
60};
61extern struct amd_northbridge_info amd_northbridges;
62
63#define AMD_NB_GART BIT(0)
64#define AMD_NB_L3_INDEX_DISABLE BIT(1)
65#define AMD_NB_L3_PARTITIONING BIT(2)
66
67#ifdef CONFIG_AMD_NB
68
69static inline u16 amd_nb_num(void)
70{
71 return amd_northbridges.num;
72}
73
74static inline bool amd_nb_has_feature(unsigned feature)
75{
76 return ((amd_northbridges.flags & feature) == feature);
77}
78
79static inline struct amd_northbridge *node_to_amd_nb(int node)
80{
81 return (node < amd_northbridges.num) ? &amd_northbridges.nb[node] : NULL;
82}
83
84static inline u16 amd_get_node_id(struct pci_dev *pdev)
85{
86 struct pci_dev *misc;
87 int i;
88
89 for (i = 0; i != amd_nb_num(); i++) {
90 misc = node_to_amd_nb(i)->misc;
91
92 if (pci_domain_nr(misc->bus) == pci_domain_nr(pdev->bus) &&
93 PCI_SLOT(misc->devfn) == PCI_SLOT(pdev->devfn))
94 return i;
95 }
96
97 WARN(1, "Unable to find AMD Northbridge id for %s\n", pci_name(pdev));
98 return 0;
99}
100
101#else
102
103#define amd_nb_num(x) 0
104#define amd_nb_has_feature(x) false
105#define node_to_amd_nb(x) NULL
106
107#endif
108
109
110#endif /* _ASM_X86_AMD_NB_H */