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x86, UV: Fix and clean up bau code to use uv_gpa_to_pnode()

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Create an inline function to extract the pnode from a global
physical address and then convert the broadcast assist unit to
use the newly created uv_gpa_to_pnode function.

The open-coded code was wrong as well - it might explain a
few of our unexplained bau hangs.

Signed-off-by: Robin Holt <holt@sgi.com>
Acked-by: Cliff Whickman <cpw@sgi.com>
Cc: linux-mm@kvack.org
Cc: Jack Steiner <steiner@sgi.com>
LKML-Reference: <20091016112920.GZ8903@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Robin Holt
2009-10-16 06:29:20 -05:00
committed by Ingo Molnar
parent 93ae5012a7
commit 1d21e6e3ff
2 changed files with 17 additions and 6 deletions
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16
arch/x86/include/asm/uv/uv_hub.h
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@@ -114,7 +114,7 @@
/*
* The largest possible NASID of a C or M brick (+ 2)
*/
#define UV_MAX_NASID_VALUE (UV_MAX_NUMALINK_NODES * 2)
#define UV_MAX_NASID_VALUE (UV_MAX_NUMALINK_BLADES * 2)
struct uv_scir_s {
struct timer_list timer;
@@ -230,6 +230,20 @@ static inline unsigned long uv_gpa(void *v)
return uv_soc_phys_ram_to_gpa(__pa(v));
}
/* gnode -> pnode */
static inline unsigned long uv_gpa_to_gnode(unsigned long gpa)
{
return gpa >> uv_hub_info->m_val;
}
/* gpa -> pnode */
static inline int uv_gpa_to_pnode(unsigned long gpa)
{
unsigned long n_mask = (1UL << uv_hub_info->n_val) - 1;
return uv_gpa_to_gnode(gpa) & n_mask;
}
/* pnode, offset --> socket virtual */
static inline void *uv_pnode_offset_to_vaddr(int pnode, unsigned long offset)
{