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 extern struct pci_device_id amd_nb_misc_ids[];
   7 struct bootnode;
   8
   9 extern int early_is_amd_nb(u32 value);
  10 extern int amd_cache_northbridges(void);
  11 extern void amd_flush_garts(void);
  12 extern int amd_get_nodes(struct bootnode *nodes);
  13 extern int amd_numa_init(unsigned long start_pfn, unsigned long end_pfn);
  14 extern int amd_scan_nodes(void);
  15
  16 struct amd_northbridge {
  17         struct pci_dev *misc;
  18 };
  19
  20 struct amd_northbridge_info {
  21         u16 num;
  22         u64 flags;
  23         struct amd_northbridge *nb;
  24 };
  25 extern struct amd_northbridge_info amd_northbridges;
  26
  27 #define AMD_NB_GART                     0x1
  28 #define AMD_NB_L3_INDEX_DISABLE         0x2
  29
  30 #ifdef CONFIG_AMD_NB
  31
  32 static inline int amd_nb_num(void)
  33 {
  34         return amd_northbridges.num;
  35 }
  36
  37 static inline int amd_nb_has_feature(int feature)
  38 {
  39         return ((amd_northbridges.flags & feature) == feature);
  40 }
  41
  42 static inline struct amd_northbridge *node_to_amd_nb(int node)
  43 {
  44         return (node < amd_northbridges.num) ? &amd_northbridges.nb[node] : NULL;
  45 }
  46
  47 #else
  48
  49 #define amd_nb_num(x)           0
  50 #define amd_nb_has_feature(x)   false
  51 #define node_to_amd_nb(x)       NULL
  52
  53 #endif
  54
  55
  56 #endif /* _ASM_X86_AMD_NB_H */