arch/arm/mach-s3c6400/include/mach/entry-macro.S

   1 /* arch/arm/mach-s3c6400/include/mach/entry-macro.S
   2  *
   3  * Copyright 2008 Openmoko, Inc.
   4  * Copyright 2008 Simtec Electronics
   5  *      http://armlinux.simtec.co.uk/
   6  *      Ben Dooks <ben@simtec.co.uk>
   7  *
   8  * Low-level IRQ helper macros for the Samsung S3C64XX series
   9  *
  10  * This file is licensed under  the terms of the GNU General Public
  11  * License version 2. This program is licensed "as is" without any
  12  * warranty of any kind, whether express or implied.
  13 */
  14
  15 #include <asm/hardware/vic.h>
  16 #include <mach/map.h>
  17 #include <plat/irqs.h>
  18
  19         .macro  disable_fiq
  20         .endm
  21
  22         .macro  get_irqnr_preamble, base, tmp
  23         ldr     \base, =S3C_VA_VIC0
  24         .endm
  25
  26         .macro  arch_ret_to_user, tmp1, tmp2
  27         .endm
  28
  29         .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
  30
  31         @ check the vic0
  32         mov     \irqnr, # S3C_IRQ_OFFSET + 31
  33         ldr     \irqstat, [ \base, # VIC_IRQ_STATUS ]
  34         teq     \irqstat, #0
  35
  36         @ otherwise try vic1
  37         addeq   \tmp, \base, #(S3C_VA_VIC1 - S3C_VA_VIC0)
  38         addeq   \irqnr, \irqnr, #32
  39         ldreq   \irqstat, [ \tmp, # VIC_IRQ_STATUS ]
  40         teqeq   \irqstat, #0
  41
  42         clzne   \irqstat, \irqstat
  43         subne   \irqnr, \irqnr, \irqstat
  44         .endm