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 #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