Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-26 22:21:42 +00:00
Code Issues Packages Projects Releases Wiki Activity

x86: SGI UV: Fix mapping of MMIO registers

Browse Source 
This fixes the problem of the initialization code not correctly
mapping the entire MMIO space on a UV system.  A side effect is
the map_high() interface needed to be changed to accommodate
different address and size shifts.

Signed-off-by: Mike Travis <travis@sgi.com>
Reviewed-by: Mike Habeck <habeck@sgi.com>
Cc: <stable@kernel.org>
Cc: Jack Steiner <steiner@sgi.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <4B479202.7080705@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Mike Travis 2010-01-08 12:13:54 -08:00 committed by Ingo Molnar
parent df39a2e48f
commit fcfbb2b5fa
1 changed files with 8 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
arch/x86/kernel/apic/x2apic_uv_x.c
View File

@ -374,13 +374,13 @@ static __init void get_lowmem_redirect(unsigned long *base, unsigned long *size)
enum map_type {map_wb, map_uc};
static __init void map_high(char *id, unsigned long base, int shift,
int max_pnode, enum map_type map_type)
static __init void map_high(char *id, unsigned long base, int pshift,
int bshift, int max_pnode, enum map_type map_type)
{
unsigned long bytes, paddr;
paddr = base << shift;
bytes = (1UL << shift) * (max_pnode + 1);
paddr = base << pshift;
bytes = (1UL << bshift) * (max_pnode + 1);
printk(KERN_INFO "UV: Map %s_HI 0x%lx - 0x%lx\n", id, paddr,
paddr + bytes);
if (map_type == map_uc)
@ -396,7 +396,7 @@ static __init void map_gru_high(int max_pnode)
gru.v = uv_read_local_mmr(UVH_RH_GAM_GRU_OVERLAY_CONFIG_MMR);
if (gru.s.enable) {
map_high("GRU", gru.s.base, shift, max_pnode, map_wb);
map_high("GRU", gru.s.base, shift, shift, max_pnode, map_wb);
gru_start_paddr = ((u64)gru.s.base << shift);
gru_end_paddr = gru_start_paddr + (1UL << shift) * (max_pnode + 1);
@ -410,7 +410,7 @@ static __init void map_mmr_high(int max_pnode)
mmr.v = uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR);
if (mmr.s.enable)
map_high("MMR", mmr.s.base, shift, max_pnode, map_uc);
map_high("MMR", mmr.s.base, shift, shift, max_pnode, map_uc);
}
static __init void map_mmioh_high(int max_pnode)
@ -420,7 +420,8 @@ static __init void map_mmioh_high(int max_pnode)
mmioh.v = uv_read_local_mmr(UVH_RH_GAM_MMIOH_OVERLAY_CONFIG_MMR);
if (mmioh.s.enable)
map_high("MMIOH", mmioh.s.base, shift, max_pnode, map_uc);
map_high("MMIOH", mmioh.s.base, shift, mmioh.s.m_io,
max_pnode, map_uc);
}
static __init void map_low_mmrs(void)