linux/include/asm-arm/arch-imx/entry-macro.S
Russell King e80a0e6e7c [ARM] Merge remaining IOP code
Conflicts:
	include/asm-arm/arch-at91rm9200/entry-macro.S

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-02-20 10:52:43 +00:00

33 lines
891 B
ArmAsm

/*
* include/asm-arm/arch-imx/entry-macro.S
*
* Low-level IRQ helper macros for iMX-based platforms
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#include <asm/hardware.h>
.macro disable_fiq
.endm
.macro get_irqnr_preamble, base, tmp
.endm
.macro arch_ret_to_user, tmp1, tmp2
.endm
#define AITC_NIVECSR 0x40
.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
ldr \base, =IO_ADDRESS(IMX_AITC_BASE)
@ Load offset & priority of the highest priority
@ interrupt pending.
ldr \irqstat, [\base, #AITC_NIVECSR]
@ Shift off the priority leaving the offset or
@ "interrupt number", use arithmetic shift to
@ transform illegal source (0xffff) as -1
mov \irqnr, \irqstat, asr #16
adds \tmp, \irqnr, #1
.endm