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Text File  |  2008-12-24  |  899 b   |  36 lines
  1. /*
  2.  * arch/arm/mach-l7200/include/mach/entry-macro.S
  3.  *
  4.  * Low-level IRQ helper macros for L7200-based platforms
  5.  *
  6.  * This file is licensed under  the terms of the GNU General Public
  7.  * License version 2. This program is licensed "as is" without any
  8.  * warranty of any kind, whether express or implied.
  9.  */
  10. #include <mach/hardware.h>
  11.  
  12.         .equ    irq_base_addr,    IO_BASE_2
  13.  
  14.         .macro  disable_fiq
  15.         .endm
  16.  
  17.         .macro  get_irqnr_preamble, base, tmp
  18.         .endm
  19.  
  20.         .macro  arch_ret_to_user, tmp1, tmp2
  21.         .endm
  22.  
  23.         .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
  24.         mov     \irqstat, #irq_base_addr        @ Virt addr IRQ regs
  25.         add    \irqstat, \irqstat, #0x00001000        @ Status reg
  26.         ldr     \irqstat, [\irqstat, #0]        @ get interrupts
  27.         mov     \irqnr, #0
  28. 1001:        tst     \irqstat, #1
  29.         addeq   \irqnr, \irqnr, #1
  30.         moveq   \irqstat, \irqstat, lsr #1
  31.         tsteq   \irqnr, #32
  32.         beq     1001b
  33.         teq     \irqnr, #32
  34.         .endm
  35.  
  36.