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Text File  |  2006-08-11  |  1.4 KB  |  58 lines
  1. /*
  2.  * include/asm-arm/arch-iop3xx/entry-macro.S
  3.  *
  4.  * Low-level IRQ helper macros for IOP3xx-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 <asm/arch/irqs.h>
  11.  
  12. #if defined(CONFIG_ARCH_IOP321)
  13.         .macro  disable_fiq
  14.         .endm
  15.  
  16.         /*
  17.          * Note: only deal with normal interrupts, not FIQ
  18.          */
  19.         .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
  20.         mov     \irqnr, #0
  21.         mrc     p6, 0, \irqstat, c8, c0, 0      @ Read IINTSRC
  22.         cmp     \irqstat, #0
  23.         beq     1001f
  24.         clz     \irqnr, \irqstat
  25.         mov     \base, #31
  26.         subs    \irqnr,\base,\irqnr
  27.         add     \irqnr,\irqnr,#IRQ_IOP321_DMA0_EOT
  28. 1001:
  29.         .endm
  30.  
  31. #elif defined(CONFIG_ARCH_IOP331)
  32.         .macro  disable_fiq
  33.         .endm
  34.  
  35.         /*
  36.          * Note: only deal with normal interrupts, not FIQ
  37.          */
  38.         .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
  39.         mov     \irqnr, #0
  40.         mrc     p6, 0, \irqstat, c4, c0, 0      @ Read IINTSRC0
  41.         cmp     \irqstat, #0
  42.         bne     1002f
  43.         mrc     p6, 0, \irqstat, c5, c0, 0      @ Read IINTSRC1
  44.         cmp    \irqstat, #0
  45.         beq    1001f
  46.         clz    \irqnr, \irqstat
  47.         rsbs    \irqnr,\irqnr,#31   @ recommend by RMK
  48.         add    \irqnr,\irqnr,#IRQ_IOP331_XINT8
  49.         b    1001f
  50. 1002:    clz     \irqnr, \irqstat
  51.         rsbs    \irqnr,\irqnr,#31   @ recommend by RMK
  52.         add     \irqnr,\irqnr,#IRQ_IOP331_DMA0_EOT
  53. 1001:
  54.         .endm
  55.  
  56. #endif
  57.  
  58.