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kernel/linux-rt-4.4.41/arch/arm/mach-davinci/include/mach/entry-macro.S 1.03 KB
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  /*
   * Low-level IRQ helper macros for TI DaVinci-based platforms
   *
   * Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com>
   *
   * 2007 (c) MontaVista Software, Inc. 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 <mach/irqs.h>
  
  		.macro  get_irqnr_preamble, base, tmp
  		ldr \base, =davinci_intc_base
  		ldr \base, [\base]
  		.endm
  
  		.macro	get_irqnr_and_base, irqnr, irqstat, base, tmp
  #if defined(CONFIG_AINTC) && defined(CONFIG_CP_INTC)
  		ldr \tmp, =davinci_intc_type
  		ldr \tmp, [\tmp]
  		cmp \tmp, #DAVINCI_INTC_TYPE_CP_INTC
  		beq 1001f
  #endif
  #if defined(CONFIG_AINTC)
  		ldr \tmp, [\base, #0x14]
  		movs \tmp, \tmp, lsr #2
  		sub \irqnr, \tmp, #1
  		b 1002f
  #endif
  #if defined(CONFIG_CP_INTC)
  1001:		ldr \irqnr, [\base, #0x80] /* get irq number */
  		mov \tmp, \irqnr, lsr #31
  		and \irqnr, \irqnr, #0xff  /* irq is in bits 0-9 */
  		and \tmp, \tmp, #0x1
  		cmp \tmp, #0x1
  #endif
  1002:
  		.endm