| /* |
| * |
| * arch-arm/mach-u300/include/mach/entry-macro.S |
| * |
| * |
| * Copyright (C) 2006-2009 ST-Ericsson AB |
| * License terms: GNU General Public License (GPL) version 2 |
| * Low-level IRQ helper macros for ST-Ericsson U300 |
| * Author: Linus Walleij <linus.walleij@stericsson.com> |
| */ |
| #include <mach/hardware.h> |
| #include <asm/hardware/vic.h> |
| |
| .macro disable_fiq |
| .endm |
| |
| .macro get_irqnr_preamble, base, tmp |
| .endm |
| |
| .macro arch_ret_to_user, tmp1, tmp2 |
| .endm |
| |
| .macro get_irqnr_and_base, irqnr, irqstat, base, tmp |
| ldr \base, = U300_AHB_PER_VIRT_BASE-U300_AHB_PER_PHYS_BASE+U300_INTCON0_BASE |
| ldr \irqstat, [\base, #VIC_IRQ_STATUS] @ get masked status |
| mov \irqnr, #0 |
| teq \irqstat, #0 |
| bne 1002f |
| 1001: ldr \base, = U300_AHB_PER_VIRT_BASE-U300_AHB_PER_PHYS_BASE+U300_INTCON1_BASE |
| ldr \irqstat, [\base, #VIC_IRQ_STATUS] @ get masked status |
| mov \irqnr, #32 |
| teq \irqstat, #0 |
| beq 1003f |
| 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 */ |
| .endm |
