Commit fae419f2 authored by Robin Holt's avatar Robin Holt Committed by Linus Torvalds

x86: uv: introduce uv_gpa_is_mmr

Provide a mechanism for determining if a global physical address is
pointing to a UV hub MMR.
Signed-off-by: default avatarRobin Holt <holt@sgi.com>
Cc: Jack Steiner <steiner@sgi.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 68212893
......@@ -232,6 +232,13 @@ static inline unsigned long uv_gpa(void *v)
return uv_soc_phys_ram_to_gpa(__pa(v));
}
/* Top two bits indicate the requested address is in MMR space. */
static inline int
uv_gpa_in_mmr_space(unsigned long gpa)
{
return (gpa >> 62) == 0x3UL;
}
/* UV global physical address --> socket phys RAM */
static inline unsigned long uv_gpa_to_soc_phys_ram(unsigned long gpa)
{
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment