| /* | |
| * 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 |