arch/arm/mach-s5p6442/include/mach/entry-macro.S

   1 /* linux/arch/arm/mach-s5p6442/include/mach/entry-macro.S
   2  *
   3  * Copyright (c) 2010 Samsung Electronics Co., Ltd.
   4  *              http://www.samsung.com/
   5  *
   6  * Low-level IRQ helper macros for the Samsung S5P6442
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11 */
  12
  13 #include <asm/hardware/vic.h>
  14 #include <mach/map.h>
  15 #include <plat/irqs.h>
  16
  17         .macro  disable_fiq
  18         .endm
  19
  20         .macro  get_irqnr_preamble, base, tmp
  21         ldr     \base, =VA_VIC0
  22         .endm
  23
  24         .macro  arch_ret_to_user, tmp1, tmp2
  25         .endm
  26
  27         .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
  28
  29         @ check the vic0
  30         mov     \irqnr, # S5P_IRQ_OFFSET + 31
  31         ldr     \irqstat, [ \base, # VIC_IRQ_STATUS ]
  32         teq     \irqstat, #0
  33
  34         @ otherwise try vic1
  35         addeq   \tmp, \base, #(VA_VIC1 - VA_VIC0)
  36         addeq   \irqnr, \irqnr, #32
  37         ldreq   \irqstat, [ \tmp, # VIC_IRQ_STATUS ]
  38         teqeq   \irqstat, #0
  39
  40         @ otherwise try vic2
  41         addeq   \tmp, \base, #(VA_VIC2 - VA_VIC0)
  42         addeq   \irqnr, \irqnr, #32
  43         ldreq   \irqstat, [ \tmp, # VIC_IRQ_STATUS ]
  44         teqeq   \irqstat, #0
  45
  46         clzne   \irqstat, \irqstat
  47         subne   \irqnr, \irqnr, \irqstat
  48         .endm