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- /*
- * arch/arm/mach-ep93xx/include/mach/entry-macro.S
- * IRQ demultiplexing for EP93xx
- *
- * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at
- * your option) any later version.
- */
- #include <mach/ep93xx-regs.h>
- .macro disable_fiq
- .endm
- .macro get_irqnr_preamble, base, tmp
- .endm
- .macro arch_ret_to_user, tmp1, tmp2
- .endm
- .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
- ldr \base, =(EP93XX_AHB_VIRT_BASE)
- orr \base, \base, #0x000b0000
- mov \irqnr, #0
- ldr \irqstat, [\base] @ lower 32 interrupts
- cmp \irqstat, #0
- bne 1001f
- eor \base, \base, #0x00070000
- ldr \irqstat, [\base] @ upper 32 interrupts
- cmp \irqstat, #0
- beq 1002f
- mov \irqnr, #0x20
- 1001:
- movs \tmp, \irqstat, lsl #16
- movne \irqstat, \tmp
- addeq \irqnr, \irqnr, #16
- movs \tmp, \irqstat, lsl #8
- movne \irqstat, \tmp
- addeq \irqnr, \irqnr, #8
- movs \tmp, \irqstat, lsl #4
- movne \irqstat, \tmp
- addeq \irqnr, \irqnr, #4
- movs \tmp, \irqstat, lsl #2
- movne \irqstat, \tmp
- addeq \irqnr, \irqnr, #2
- movs \tmp, \irqstat, lsl #1
- addeq \irqnr, \irqnr, #1
- orrs \base, \base, #1
- 1002:
- .endm
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