2 * arch/arm/mach-iop33x/include/mach/entry-macro.S
4 * Low-level IRQ helper macros for IOP33x-based platforms
6 * This file is licensed under the terms of the GNU General Public
7 * License version 2. This program is licensed "as is" without any
8 * warranty of any kind, whether express or implied.
10 #include <mach/iop33x.h>
15 .macro get_irqnr_preamble, base, tmp
16 mrc p15, 0, \tmp, c15, c1, 0
17 orr \tmp, \tmp, #(1 << 6)
18 mcr p15, 0, \tmp, c15, c1, 0 @ Enable cp6 access
19 mrc p15, 0, \tmp, c15, c1, 0
21 sub pc, pc, #4 @ cp_wait
24 .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
25 mrc p6, 0, \irqstat, c14, c0, 0 @ Read IINTVEC
27 mrceq p6, 0, \irqstat, c14, c0, 0 @ erratum 63 workaround
28 adds \irqnr, \irqstat, #1
29 movne \irqnr, \irqstat, lsr #2
32 .macro arch_ret_to_user, tmp1, tmp2
33 mrc p15, 0, \tmp1, c15, c1, 0
34 ands \tmp2, \tmp1, #(1 << 6)
35 bicne \tmp1, \tmp1, #(1 << 6)
36 mcrne p15, 0, \tmp1, c15, c1, 0 @ Disable cp6 access