[net-next-2.6.git] / arch / arm / mach-mv78xx0 / include / mach / entry-macro.S

/*
 * arch/arm/mach-mv78xx0/include/mach/entry-macro.S
 *
 * Low-level IRQ helper macros for Marvell MV78xx0 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 <mach/mv78xx0.h>

	.macro  disable_fiq
	.endm

	.macro  arch_ret_to_user, tmp1, tmp2
	.endm

	.macro  get_irqnr_preamble, base, tmp
	ldr	\base, =IRQ_VIRT_BASE
	.endm

	.macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
	@ check low interrupts
	ldr	\irqstat, [\base, #IRQ_CAUSE_LOW_OFF]
	ldr	\tmp, [\base, #IRQ_MASK_LOW_OFF]
	mov	\irqnr, #31
	ands	\irqstat, \irqstat, \tmp

	@ if no low interrupts set, check high interrupts
	ldreq	\irqstat, [\base, #IRQ_CAUSE_HIGH_OFF]
	ldreq	\tmp, [\base, #IRQ_MASK_HIGH_OFF]
	moveq	\irqnr, #63
	andeqs	\irqstat, \irqstat, \tmp

	@ find first active interrupt source
	clzne	\irqstat, \irqstat
	subne	\irqnr, \irqnr, \irqstat
	.endm
Commit	Line	Data
794d15b2	1	/*
a09e64fb	2	* arch/arm/mach-mv78xx0/include/mach/entry-macro.S
794d15b2 SS	3	*
	4	* Low-level IRQ helper macros for Marvell MV78xx0 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
a09e64fb	11	#include <mach/mv78xx0.h>
794d15b2 SS	12
	13	.macro disable_fiq
	14	.endm
	15
	16	.macro arch_ret_to_user, tmp1, tmp2
	17	.endm
	18
	19	.macro get_irqnr_preamble, base, tmp
	20	ldr \base, =IRQ_VIRT_BASE
	21	.endm
	22
	23	.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
	24	@ check low interrupts
	25	ldr \irqstat, [\base, #IRQ_CAUSE_LOW_OFF]
	26	ldr \tmp, [\base, #IRQ_MASK_LOW_OFF]
	27	mov \irqnr, #31
	28	ands \irqstat, \irqstat, \tmp
	29
	30	@ if no low interrupts set, check high interrupts
	31	ldreq \irqstat, [\base, #IRQ_CAUSE_HIGH_OFF]
	32	ldreq \tmp, [\base, #IRQ_MASK_HIGH_OFF]
	33	moveq \irqnr, #63
	34	andeqs \irqstat, \irqstat, \tmp
	35
	36	@ find first active interrupt source
	37	clzne \irqstat, \irqstat
	38	subne \irqnr, \irqnr, \irqstat
	39	.endm