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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/arm/mach-clps711x/include/mach/entry-macro.S
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/*

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 * arch/arm/mach-clps711x/include/mach/entry-macro.S

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 *

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 * Low-level IRQ helper macros for CLPS711X-based platforms

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 *

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 * This file is licensed under  the terms of the GNU General Public

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 * License version 2. This program is licensed "as is" without any

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 * warranty of any kind, whether express or implied.

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 */

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#include <mach/hardware.h>

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#include <asm/hardware/clps7111.h>

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		.macro	disable_fiq

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		.endm

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		.macro	get_irqnr_preamble, base, tmp

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		.endm

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		.macro	arch_ret_to_user, tmp1, tmp2

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		.endm

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#if (INTSR2 - INTSR1) != (INTMR2 - INTMR1)

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#error INTSR stride != INTMR stride

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#endif

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		.macro	get_irqnr_and_base, irqnr, stat, base, mask

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		mov	\base, #CLPS7111_BASE

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		ldr	\stat, [\base, #INTSR1]

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		ldr	\mask, [\base, #INTMR1]

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		mov	\irqnr, #4

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		mov	\mask, \mask, lsl #16

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		and	\stat, \stat, \mask, lsr #16

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		movs	\stat, \stat, lsr #4

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		bne	1001f

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		add	\base, \base, #INTSR2 - INTSR1

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		ldr	\stat, [\base, #INTSR1]

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		ldr	\mask, [\base, #INTMR1]

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		mov	\irqnr, #16

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		mov	\mask, \mask, lsl #16

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		and	\stat, \stat, \mask, lsr #16

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1001:		tst	\stat, #255

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		addeq	\irqnr, \irqnr, #8

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		moveq	\stat, \stat, lsr #8

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		tst	\stat, #15

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		addeq	\irqnr, \irqnr, #4

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		moveq	\stat, \stat, lsr #4

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		tst	\stat, #3

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		addeq	\irqnr, \irqnr, #2

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		moveq	\stat, \stat, lsr #2

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		tst	\stat, #1

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		addeq	\irqnr, \irqnr, #1

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		moveq	\stat, \stat, lsr #1

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		tst	\stat, #1			@ bit 0 should be set

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		.endm

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