tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * include/asm-arm/arch-ebsa110/entry-macro.S
3 *
4 * Low-level IRQ helper macros for ebsa110 platform.
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
11
12
13#define IRQ_STAT 0xff000000 /* read */
14
15 .macro disable_fiq
16 .endm
17
18 .macro get_irqnr_and_base, irqnr, stat, base, tmp
19 mov \base, #IRQ_STAT
20 ldrb \stat, [\base] @ get interrupts
21 mov \irqnr, #0
22 tst \stat, #15
23 addeq \irqnr, \irqnr, #4
24 moveq \stat, \stat, lsr #4
25 tst \stat, #3
26 addeq \irqnr, \irqnr, #2
27 moveq \stat, \stat, lsr #2
28 tst \stat, #1
29 addeq \irqnr, \irqnr, #1
30 moveq \stat, \stat, lsr #1
31 tst \stat, #1 @ bit 0 should be set
32 .endm
33