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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * include/asm-arm/arch-ixp2000/entry-macro.S
3 *
4 * Low-level IRQ helper macros for IXP2000-based 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 */
Russell King78ff18a2006-01-03 17:39:34 +000010#include <asm/arch/irqs.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070011
12 .macro disable_fiq
13 .endm
14
Dan Williamsf80dff92007-02-16 22:16:32 +010015 .macro get_irqnr_preamble, base, tmp
16 .endm
17
18 .macro arch_ret_to_user, tmp1, tmp2
19 .endm
20
Linus Torvalds1da177e2005-04-16 15:20:36 -070021 .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
22
23 mov \irqnr, #0x0 @clear out irqnr as default
24 mov \base, #0xfe000000
25 orr \base, \base, #0x00e00000
26 orr \base, \base, #0x08
27 ldr \irqstat, [\base] @ get interrupts
28
29 cmp \irqstat, #0
30 beq 1001f
31
32 clz \irqnr, \irqstat
33 mov \base, #31
34 subs \irqnr, \base, \irqnr
35
36 /*
37 * We handle PCIA and PCIB here so we don't have an
38 * extra layer of code just to check these two bits.
39 */
40 cmp \irqnr, #IRQ_IXP2000_PCI
41 bne 1001f
42
43 mov \base, #0xfe000000
44 orr \base, \base, #0x00c00000
45 orr \base, \base, #0x00000100
46 orr \base, \base, #0x00000058
47 ldr \irqstat, [\base]
48
49 mov \tmp, #(1<<26)
50 tst \irqstat, \tmp
51 movne \irqnr, #IRQ_IXP2000_PCIA
52 bne 1001f
53
54 mov \tmp, #(1<<27)
55 tst \irqstat, \tmp
56 movne \irqnr, #IRQ_IXP2000_PCIB
57
581001:
59 .endm
60