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Diffstat (limited to 'slof/fs/quiesce.fs')
-rw-r--r-- | slof/fs/quiesce.fs | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/slof/fs/quiesce.fs b/slof/fs/quiesce.fs new file mode 100644 index 0000000..7521d1c --- /dev/null +++ b/slof/fs/quiesce.fs @@ -0,0 +1,48 @@ +\ ***************************************************************************** +\ * Copyright (c) 2004, 2007 IBM Corporation +\ * All rights reserved. +\ * This program and the accompanying materials +\ * are made available under the terms of the BSD License +\ * which accompanies this distribution, and is available at +\ * http://www.opensource.org/licenses/bsd-license.php +\ * +\ * Contributors: +\ * IBM Corporation - initial implementation +\ ****************************************************************************/ + + +10 CONSTANT quiesce-xt# + +\ The array with the quiesce execution tokens: +CREATE quiesce-xts quiesce-xt# cells allot +quiesce-xts quiesce-xt# cells erase + + +\ Add a token to the quiesce execution token array: +: add-quiesce-xt ( xt -- ) + quiesce-xt# 0 DO + quiesce-xts I cells + ( xt arrayptr ) + dup @ 0= IF ( xt arrayptr ) + ! UNLOOP EXIT + ELSE + drop ( xt ) + THEN + LOOP + ." Warning: quiesce xt list is full." cr +; + + +\ The quiesce call asserts that the firmware and all hardware +\ is in a sane state (e.g. assert that no background DMA is +\ running anymore) +: quiesce ( -- ) + quiesce-xt# 0 DO + quiesce-xts I cells + ( arrayptr ) + @ dup IF ( xt ) + EXECUTE + ELSE + drop UNLOOP EXIT + THEN + LOOP +; + |