| /* |
| * 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 |
