1/*****************************************************************************
2* Copyright 2006 - 2008 Broadcom Corporation.  All rights reserved.
3*
4* Unless you and Broadcom execute a separate written software license
5* agreement governing use of this software, this software is licensed to you
6* under the terms of the GNU General Public License version 2, available at
7* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
8*
9* Notwithstanding the above, under no circumstances may you combine this
10* software in any way with any other Broadcom software provided under a
11* license other than the GPL, without Broadcom's express prior written
12* consent.
13*****************************************************************************/
14
15/*
16 *
17 * Low-level IRQ helper macros for BCMRing-based platforms
18 *
19 */
20#include <mach/irqs.h>
21#include <mach/hardware.h>
22#include <mach/csp/mm_io.h>
23
24		.macro	get_irqnr_and_base, irqnr, irqstat, base, tmp
25		ldr	\base, =(MM_IO_BASE_INTC0)
26		ldr	\irqstat, [\base, #0]		@ get status
27                ldr     \irqnr, [\base, #0x10]          @ mask with enable register
28                ands    \irqstat, \irqstat, \irqnr
29		mov	\irqnr, #IRQ_INTC0_START
30		cmp	\irqstat, #0
31		bne	1001f
32
33		ldr	\base, =(MM_IO_BASE_INTC1)
34		ldr	\irqstat, [\base, #0]		@ get status
35                ldr     \irqnr, [\base, #0x10]          @ mask with enable register
36                ands    \irqstat, \irqstat, \irqnr
37		mov	\irqnr, #IRQ_INTC1_START
38		cmp	\irqstat, #0
39		bne	1001f
40
41		ldr	\base, =(MM_IO_BASE_SINTC)
42		ldr	\irqstat, [\base, #0]		@ get status
43                ldr     \irqnr, [\base, #0x10]          @ mask with enable register
44                ands    \irqstat, \irqstat, \irqnr
45		mov	\irqnr, #0xffffffff             @ code meaning no interrupt bits set
46		cmp	\irqstat, #0
47		beq	1002f
48
49		mov	\irqnr, #IRQ_SINTC_START        @ something is set, so fixup return value
50
511001:
52		movs	\tmp, \irqstat, lsl #16
53		movne	\irqstat, \tmp
54		addeq	\irqnr, \irqnr, #16
55
56		movs	\tmp, \irqstat, lsl #8
57		movne	\irqstat, \tmp
58		addeq	\irqnr, \irqnr, #8
59
60		movs	\tmp, \irqstat, lsl #4
61		movne	\irqstat, \tmp
62		addeq	\irqnr, \irqnr, #4
63
64		movs	\tmp, \irqstat, lsl #2
65		movne	\irqstat, \tmp
66		addeq	\irqnr, \irqnr, #2
67
68		movs	\tmp, \irqstat, lsl #1
69		addeq	\irqnr, \irqnr, #1
70		orrs	\base, \base, #1
71
721002:           @ irqnr will be set to 0xffffffff if no irq bits are set
73		.endm
74
75		.macro  get_irqnr_preamble, base, tmp
76		.endm
77