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
  15 extern bool early_is_amd_nb(u32 value);
  16 extern int amd_cache_northbridges(void);
  17 extern void amd_flush_garts(void);
  18 extern int amd_numa_init(void);
  19 extern int amd_get_subcaches(int);
  20 extern int amd_set_subcaches(int, int);
  21
  22 struct amd_l3_cache {
  23         unsigned indices;
  24         u8       subcaches[4];
  25 };
  26
  27 struct amd_northbridge {
  28         struct pci_dev *misc;
  29         struct pci_dev *link;
  30         struct amd_l3_cache l3_cache;
  31 };
  32
  33 struct amd_northbridge_info {
  34         u16 num;
  35         u64 flags;
  36         struct amd_northbridge *nb;
  37 };
  38 extern struct amd_northbridge_info amd_northbridges;
  39
  40 #define AMD_NB_GART                     BIT(0)
  41 #define AMD_NB_L3_INDEX_DISABLE         BIT(1)
  42 #define AMD_NB_L3_PARTITIONING          BIT(2)
  43
  44 #ifdef CONFIG_AMD_NB
  45
  46 static inline u16 amd_nb_num(void)
  47 {
  48         return amd_northbridges.num;
  49 }
  50
  51 static inline bool amd_nb_has_feature(unsigned feature)
  52 {
  53         return ((amd_northbridges.flags & feature) == feature);
  54 }
  55
  56 static inline struct amd_northbridge *node_to_amd_nb(int node)
  57 {
  58         return (node < amd_northbridges.num) ? &amd_northbridges.nb[node] : NULL;
  59 }
  60
  61 #else
  62
  63 #define amd_nb_num(x)           0
  64 #define amd_nb_has_feature(x)   false
  65 #define node_to_amd_nb(x)       NULL
  66
  67 #endif
  68
  69
  70 #endif /* _ASM_X86_AMD_NB_H */