diff options
Diffstat (limited to 'drivers/edac/amd64_edac.h')
| -rw-r--r-- | drivers/edac/amd64_edac.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/edac/amd64_edac.h b/drivers/edac/amd64_edac.h index 6dc1fcc..d2443cf 100644 --- a/drivers/edac/amd64_edac.h +++ b/drivers/edac/amd64_edac.h @@ -160,6 +160,14 @@ #define OFF false /* + * Create a contiguous bitmask starting at bit position @lo and ending at + * position @hi. For example + * + * GENMASK(21, 39) gives us the 64bit vector 0x000000ffffe00000. + */ +#define GENMASK(lo, hi) (((1ULL << ((hi) - (lo) + 1)) - 1) << (lo)) + +/* * PCI-defined configuration space registers */ #define PCI_DEVICE_ID_AMD_15H_M30H_NB_F1 0x141b |