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- /*
- * Copyright (C) 2007 Lennert Buytenhek <buytenh@wantstofly.org>
- * Copyright 2004-2009 Freescale Semiconductor, Inc. All Rights Reserved.
- */
-
- /*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
- #include <mach/hardware.h>
-
- #define AVIC_NIMASK 0x04
-
- @ this macro disables fast irq (not implemented)
- .macro disable_fiq
- .endm
-
- .macro get_irqnr_preamble, base, tmp
- #ifdef CONFIG_MXC_TZIC
- ldr \base, =TZIC_IO_ADDRESS(TZIC_BASE_ADDR)
- #else
- ldr \base, =AVIC_IO_ADDRESS(AVIC_BASE_ADDR)
- #ifdef CONFIG_MXC_IRQ_PRIOR
- ldr r4, [\base, #AVIC_NIMASK]
- #endif
- #endif
- .endm
-
- .macro arch_ret_to_user, tmp1, tmp2
- .endm
-
- @ this macro checks which interrupt occured
- @ and returns its number in irqnr
- @ and returns if an interrupt occured in irqstat
- .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
- #ifdef CONFIG_MXC_TZIC
- @ Load offset & priority of the highest priority
- @ interrupt pending.
- @ 0xD80 is HIPND0 register
- ldr \irqnr, =0
- ldr \irqstat, =0x0D80
- 1000:
- ldr \tmp, [\irqstat, \base]
- cmp \tmp, #0
- bne 1001f
- addeq \irqnr, \irqnr, #32
- addeq \irqstat, \irqstat, #4
- cmp \irqnr, #128
- blo 1000b
- b 2001f
- 1001: ldr \irqstat, =1
- 1002: tst \tmp, \irqstat
- bne 2002f
- movs \tmp, \tmp, lsr #1
- addne \irqnr, \irqnr, #1
- bne 1002b
- 2001:
- ldr \irqnr, =0
- 2002:
- movs \irqnr, \irqnr
- #else
- @ Load offset & priority of the highest priority
- @ interrupt pending from AVIC_NIVECSR
- ldr \irqstat, [\base, #0x40]
- @ Shift to get the decoded IRQ number, using ASR so
- @ 'no interrupt pending' becomes 0xffffffff
- mov \irqnr, \irqstat, asr #16
- @ set zero flag if IRQ + 1 == 0
- adds \tmp, \irqnr, #1
- #ifdef CONFIG_MXC_IRQ_PRIOR
- bicne \tmp, \irqstat, #0xFFFFFFE0
- strne \tmp, [\base, #AVIC_NIMASK]
- streq r4, [\base, #AVIC_NIMASK]
- #endif
- #endif
- .endm
-
- @ irq priority table (not used)
- .macro irq_prio_table
- .endm
-