diff options
author | Ben Dooks <ben-linux@fluff.org> | 2008-08-08 21:10:12 +0100 |
---|---|---|
committer | Ben Dooks <ben-linux@fluff.org> | 2008-08-08 21:10:12 +0100 |
commit | af7a535688a758d15f06a98833e6a143b29af9de (patch) | |
tree | bac5ab210bbbbe276f0e44ed84194d7c8bb16aae /arch/arm/mach-iop13xx/include/mach/entry-macro.S | |
parent | 0c17e4ceedd35c78b1c7413dbd16279a350be6bc (diff) | |
parent | c41107c2d4fd31924533f4dbc4c3428acc2b5894 (diff) |
Merge http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm into for-rmk
Diffstat (limited to 'arch/arm/mach-iop13xx/include/mach/entry-macro.S')
-rw-r--r-- | arch/arm/mach-iop13xx/include/mach/entry-macro.S | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/arch/arm/mach-iop13xx/include/mach/entry-macro.S b/arch/arm/mach-iop13xx/include/mach/entry-macro.S new file mode 100644 index 00000000000..a624a7870c6 --- /dev/null +++ b/arch/arm/mach-iop13xx/include/mach/entry-macro.S @@ -0,0 +1,45 @@ +/* + * iop13xx low level irq macros + * Copyright (c) 2005-2006, Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., 59 Temple + * Place - Suite 330, Boston, MA 02111-1307 USA. + * + */ + .macro disable_fiq + .endm + + .macro get_irqnr_preamble, base, tmp + mrc p15, 0, \tmp, c15, c1, 0 + orr \tmp, \tmp, #(1 << 6) + mcr p15, 0, \tmp, c15, c1, 0 @ Enable cp6 access + .endm + + /* + * Note: a 1-cycle window exists where iintvec will return the value + * of iintbase, so we explicitly check for "bad zeros" + */ + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + mrc p6, 0, \irqnr, c3, c2, 0 @ Read IINTVEC + cmp \irqnr, #0 + mrceq p6, 0, \irqnr, c3, c2, 0 @ Re-read on potentially bad zero + adds \irqstat, \irqnr, #1 @ Check for 0xffffffff + movne \irqnr, \irqnr, lsr #2 @ Convert to irqnr + .endm + + .macro arch_ret_to_user, tmp1, tmp2 + mrc p15, 0, \tmp1, c15, c1, 0 + ands \tmp2, \tmp1, #(1 << 6) + bicne \tmp1, \tmp1, #(1 << 6) + mcrne p15, 0, \tmp1, c15, c1, 0 @ Disable cp6 access + .endm |