| /* | |
| * include/asm-arm/arch-versatile/entry-macro.S | |
| * | |
| * Low-level IRQ helper macros for Versatile 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 <asm/hardware.h> | |
| #include <asm/hardware/vic.h> | |
| .macro disable_fiq | |
| .endm | |
| .macro get_irqnr_preamble, base, tmp | |
| ldr \base, =IO_ADDRESS(VERSATILE_VIC_BASE) | |
| .endm | |
| .macro arch_ret_to_user, tmp1, tmp2 | |
| .endm | |
| .macro get_irqnr_and_base, irqnr, irqstat, base, tmp | |
| ldr \irqstat, [\base, #VIC_IRQ_STATUS] @ get masked status | |
| mov \irqnr, #0 | |
| teq \irqstat, #0 | |
| beq 1003f | |
| 1001: tst \irqstat, #15 | |
| bne 1002f | |
| add \irqnr, \irqnr, #4 | |
| movs \irqstat, \irqstat, lsr #4 | |
| bne 1001b | |
| 1002: tst \irqstat, #1 | |
| bne 1003f | |
| add \irqnr, \irqnr, #1 | |
| movs \irqstat, \irqstat, lsr #1 | |
| bne 1002b | |
| 1003: /* EQ will be set if no irqs pending */ | |
| @ clz \irqnr, \irqstat | |
| @1003: /* EQ will be set if we reach MAXIRQNUM */ | |
| .endm | |