diff options
Diffstat (limited to 'arch/ia64/sn/kernel/sn2/ptc_deadlock.S')
| -rw-r--r-- | arch/ia64/sn/kernel/sn2/ptc_deadlock.S | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/arch/ia64/sn/kernel/sn2/ptc_deadlock.S b/arch/ia64/sn/kernel/sn2/ptc_deadlock.S index 96cb71d15682..3fa95065a446 100644 --- a/arch/ia64/sn/kernel/sn2/ptc_deadlock.S +++ b/arch/ia64/sn/kernel/sn2/ptc_deadlock.S @@ -3,7 +3,7 @@ * License. See the file "COPYING" in the main directory of this archive * for more details. * - * Copyright (C) 2000-2004 Silicon Graphics, Inc. All rights reserved. + * Copyright (C) 2000-2005 Silicon Graphics, Inc. All rights reserved. */ #include <asm/types.h> @@ -11,7 +11,7 @@ #define DEADLOCKBIT SH_PIO_WRITE_STATUS_WRITE_DEADLOCK_SHFT #define WRITECOUNTMASK SH_PIO_WRITE_STATUS_PENDING_WRITE_COUNT_MASK -#define ALIAS_OFFSET (SH1_PIO_WRITE_STATUS_0_ALIAS-SH1_PIO_WRITE_STATUS_0) +#define ALIAS_OFFSET 8 .global sn2_ptc_deadlock_recovery_core @@ -36,13 +36,15 @@ sn2_ptc_deadlock_recovery_core: extr.u piowcphy=piowc,0,61;; // Convert piowc to uncached physical address dep piowcphy=-1,piowcphy,63,1 movl mask=WRITECOUNTMASK + mov r8=r0 1: add scr2=ALIAS_OFFSET,piowc // Address of WRITE_STATUS alias register - mov scr1=7;; // Clear DEADLOCK, WRITE_ERROR, MULTI_WRITE_ERROR - st8.rel [scr2]=scr1;; + ;; + ld8.acq scr1=[scr2];; 5: ld8.acq scr1=[piowc];; // Wait for PIOs to complete. + hint @pause and scr2=scr1,mask;; // mask of writecount bits cmp.ne p6,p0=zeroval,scr2 (p6) br.cond.sptk 5b @@ -57,6 +59,7 @@ sn2_ptc_deadlock_recovery_core: st8.rel [ptc0]=data0 // Write PTC0 & wait for completion. 5: ld8.acq scr1=[piowcphy];; // Wait for PIOs to complete. + hint @pause and scr2=scr1,mask;; // mask of writecount bits cmp.ne p6,p0=zeroval,scr2 (p6) br.cond.sptk 5b;; @@ -67,6 +70,7 @@ sn2_ptc_deadlock_recovery_core: (p7) st8.rel [ptc1]=data1;; // Now write PTC1. 5: ld8.acq scr1=[piowcphy];; // Wait for PIOs to complete. + hint @pause and scr2=scr1,mask;; // mask of writecount bits cmp.ne p6,p0=zeroval,scr2 (p6) br.cond.sptk 5b @@ -77,6 +81,7 @@ sn2_ptc_deadlock_recovery_core: srlz.i;; ////////////// END PHYSICAL MODE //////////////////// +(p8) add r8=1,r8 (p8) br.cond.spnt 1b;; // Repeat if DEADLOCK occurred. br.ret.sptk rp |