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-ixp4xx/entry-macro.S
3 *
4 * Low-level IRQ helper macros for IXP4xx-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 */
10
11 .macro disable_fiq
12 .endm
13
14 .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
15 ldr \irqstat, =(IXP4XX_INTC_BASE_VIRT+IXP4XX_ICIP_OFFSET)
16 ldr \irqstat, [\irqstat] @ get interrupts
17 cmp \irqstat, #0
18 beq 1001f
19 clz \irqnr, \irqstat
20 mov \base, #31
21 subs \irqnr, \base, \irqnr
22
231001:
24 /*
25 * IXP465 has an upper IRQ status register
26 */
27#if defined(CONFIG_CPU_IXP46X)
28 bne 1002f
29 ldr \irqstat, =(IXP4XX_INTC_BASE_VIRT+IXP4XX_ICIP2_OFFSET)
30 ldr \irqstat, [\irqstat] @ get upper interrupts
31 mov \irqnr, #63
32 clz \irqstat, \irqstat
33 cmp \irqstat, #32
34 subne \irqnr, \irqnr, \irqstat
351002:
36#endif
37 .endm
38
39