include/asm-arm/arch-iop33x/entry-macro.S

   1 /*
   2  * include/asm-arm/arch-iop33x/entry-macro.S
   3  *
   4  * Low-level IRQ helper macros for IOP33x-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                 .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                 ldr     \base, =IOP3XX_REG_ADDR(0x7A0)
  21                 ldr     \irqstat, [\base]               @ Read IINTSRC0
  22                 cmp     \irqstat, #0
  23                 bne     1002f
  24                 ldr     \irqstat, [\base, #4]           @ Read IINTSRC1
  25                 cmp     \irqstat, #0
  26                 beq     1001f
  27                 clz     \irqnr, \irqstat
  28                 rsbs    \irqnr,\irqnr,#31   @ recommend by RMK
  29                 add     \irqnr,\irqnr,#IRQ_IOP331_XINT8
  30                 b       1001f
  31 1002:           clz     \irqnr, \irqstat
  32                 rsbs    \irqnr,\irqnr,#31   @ recommend by RMK
  33                 add     \irqnr,\irqnr,#IRQ_IOP331_DMA0_EOT
  34 1001:
  35                 .endm