60 lines
1.3 KiB
ArmAsm
60 lines
1.3 KiB
ArmAsm
|
/*
|
||
|
|
* 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
|