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- /*
- * 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 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
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