arch/arm/mach-omap1/include/mach/entry-macro.S

   1 /*
   2  * arch/arm/mach-omap1/include/mach/entry-macro.S
   3  *
   4  * Low-level IRQ helper macros for OMAP-based platforms
   5  *
   6  * Copyright (C) 2009 Texas Instruments
   7  *
   8  * This file is licensed under  the terms of the GNU General Public
   9  * License version 2. This program is licensed "as is" without any
  10  * warranty of any kind, whether express or implied.
  11  */
  12
  13 #include <mach/hardware.h>
  14 #include <mach/irqs.h>
  15
  16 #include "../../iomap.h"
  17
  18                 .macro  get_irqnr_preamble, base, tmp
  19                 .endm
  20
  21                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
  22                 ldr     \base, =OMAP1_IO_ADDRESS(OMAP_IH1_BASE)
  23                 ldr     \irqnr, [\base, #IRQ_ITR_REG_OFFSET]
  24                 ldr     \tmp, [\base, #IRQ_MIR_REG_OFFSET]
  25                 mov     \irqstat, #0xffffffff
  26                 bic     \tmp, \irqstat, \tmp
  27                 tst     \irqnr, \tmp
  28                 beq     1510f
  29
  30                 ldr     \irqnr, [\base, #IRQ_SIR_FIQ_REG_OFFSET]
  31                 ldr     \tmp, =omap_irq_flags   @ irq flags address
  32                 ldr     \tmp, [\tmp, #0]        @ irq flags value
  33                 cmp     \irqnr, #0
  34                 ldreq   \irqnr, [\base, #IRQ_SIR_IRQ_REG_OFFSET]
  35                 cmpeq   \irqnr, \tmp
  36                 ldreq   \base, =OMAP1_IO_ADDRESS(OMAP_IH2_BASE)
  37                 ldreq   \irqnr, [\base, #IRQ_SIR_IRQ_REG_OFFSET]
  38                 addeqs  \irqnr, \irqnr, #32
  39 1510:
  40                 .endm
  41