diff options
Diffstat (limited to 'kernel/arch/arm/mach-iop33x/include/mach/entry-macro.S')
| -rw-r--r-- | kernel/arch/arm/mach-iop33x/include/mach/entry-macro.S | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-iop33x/include/mach/entry-macro.S b/kernel/arch/arm/mach-iop33x/include/mach/entry-macro.S new file mode 100644 index 000000000..0a398fe1f --- /dev/null +++ b/kernel/arch/arm/mach-iop33x/include/mach/entry-macro.S @@ -0,0 +1,34 @@ +/* + * arch/arm/mach-iop33x/include/mach/entry-macro.S + * + * Low-level IRQ helper macros for IOP33x-based platforms + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ +#include <mach/iop33x.h> + + .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 + mrc p15, 0, \tmp, c15, c1, 0 + mov \tmp, \tmp + sub pc, pc, #4 @ cp_wait + .endm + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + mrc p6, 0, \irqstat, c14, c0, 0 @ Read IINTVEC + cmp \irqstat, #0 + mrceq p6, 0, \irqstat, c14, c0, 0 @ erratum 63 workaround + adds \irqnr, \irqstat, #1 + movne \irqnr, \irqstat, lsr #2 + .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 |