android/android_kernel_asus_sm8350
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

sparc64: Add write_pic() helper.

Browse Source 
It writes the %pic register, keeping mind of processor bugs.

Implement reset_pic() in terms of it.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2008-11-25 22:27:50 -08:00
parent f9aad60010
commit 456cad8e4e
1 changed files with 5 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
arch/sparc/include/asm/system_64.h
View File

@ -96,11 +96,12 @@ do { __asm__ __volatile__("ba,pt %%xcc, 1f\n\t" \
* arch/sparc64/kernel/smp.c:smp_percpu_timer_interrupt() * arch/sparc64/kernel/smp.c:smp_percpu_timer_interrupt()
* for more information. * for more information.
*/ */
#define reset_pic() \ #define write_pic(__p) \
__asm__ __volatile__("ba,pt %xcc, 99f\n\t" \ __asm__ __volatile__("ba,pt %%xcc, 99f\n\t" \
".align 64\n" \ ".align 64\n" \
"99:wr %g0, 0x0, %pic\n\t" \ "99:wr %0, 0x0, %%pic\n\t" \
"rd %pic, %g0") "rd %%pic, %%g0" : : "r" (__p))
#define reset_pic() write_pic(0)
#ifndef __ASSEMBLY__ #ifndef __ASSEMBLY__