ia64/linux-2.6.18-xen.hg

view include/asm-arm/arch-clps711x/entry-macro.S @ 782:9ab1c319531f

merge with linux-2.6.18-xen.hg
author Isaku Yamahata <yamahata@valinux.co.jp>
date Wed Jan 28 13:07:23 2009 +0900 (2009-01-28)
parents 831230e53067
children
line source
1 /*
2 * include/asm-arm/arch-CLPS711x/entry-macro.S
3 *
4 * Low-level IRQ helper macros for CLPS711X-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 #include <asm/hardware.h>
11 #include <asm/hardware/clps7111.h>
13 .macro disable_fiq
14 .endm
16 #if (INTSR2 - INTSR1) != (INTMR2 - INTMR1)
17 #error INTSR stride != INTMR stride
18 #endif
20 .macro get_irqnr_and_base, irqnr, stat, base, mask
21 mov \base, #CLPS7111_BASE
22 ldr \stat, [\base, #INTSR1]
23 ldr \mask, [\base, #INTMR1]
24 mov \irqnr, #4
25 mov \mask, \mask, lsl #16
26 and \stat, \stat, \mask, lsr #16
27 movs \stat, \stat, lsr #4
28 bne 1001f
30 add \base, \base, #INTSR2 - INTSR1
31 ldr \stat, [\base, #INTSR1]
32 ldr \mask, [\base, #INTMR1]
33 mov \irqnr, #16
34 mov \mask, \mask, lsl #16
35 and \stat, \stat, \mask, lsr #16
37 1001: tst \stat, #255
38 addeq \irqnr, \irqnr, #8
39 moveq \stat, \stat, lsr #8
40 tst \stat, #15
41 addeq \irqnr, \irqnr, #4
42 moveq \stat, \stat, lsr #4
43 tst \stat, #3
44 addeq \irqnr, \irqnr, #2
45 moveq \stat, \stat, lsr #2
46 tst \stat, #1
47 addeq \irqnr, \irqnr, #1
48 moveq \stat, \stat, lsr #1
49 tst \stat, #1 @ bit 0 should be set
50 .endm