git.oblomov.eu Git - linux-2.6/blob - include/asm-arm/arch-iop3xx/entry-macro.S

   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
  11 #if defined(CONFIG_ARCH_IOP321)
  12                 .macro  disable_fiq
  13                 .endm
  14
  15                 /*
  16                  * Note: only deal with normal interrupts, not FIQ
  17                  */
  18                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
  19                 mov     \irqnr, #0
  20                 mrc     p6, 0, \irqstat, c8, c0, 0      @ Read IINTSRC
  21                 cmp     \irqstat, #0
  22                 beq     1001f
  23                 clz     \irqnr, \irqstat
  24                 mov     \base, #31
  25                 subs    \irqnr,\base,\irqnr
  26                 add     \irqnr,\irqnr,#IRQ_IOP321_DMA0_EOT
  27 1001:
  28                 .endm
  29
  30 #elif defined(CONFIG_ARCH_IOP331)
  31                 .macro  disable_fiq
  32                 .endm
  33
  34                 /*
  35                  * Note: only deal with normal interrupts, not FIQ
  36                  */
  37                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
  38                 mov     \irqnr, #0
  39                 mrc     p6, 0, \irqstat, c4, c0, 0      @ Read IINTSRC0
  40                 cmp     \irqstat, #0
  41                 bne     1002f
  42                 mrc     p6, 0, \irqstat, c5, c0, 0      @ Read IINTSRC1
  43                 cmp     \irqstat, #0
  44                 beq     1001f
  45                 clz     \irqnr, \irqstat
  46                 rsbs    \irqnr,\irqnr,#31   @ recommend by RMK
  47                 add     \irqnr,\irqnr,#IRQ_IOP331_XINT8
  48                 b       1001f
  49 1002:   clz     \irqnr, \irqstat
  50                 rsbs    \irqnr,\irqnr,#31   @ recommend by RMK
  51                 add     \irqnr,\irqnr,#IRQ_IOP331_DMA0_EOT
  52 1001:
  53                 .endm
  54
  55 #endif
  56