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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-arm/arch-imx/entry-macro.S
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/asm-arm/arch-imx/entry-macro.S')
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diff --git a/include/asm-arm/arch-imx/entry-macro.S b/include/asm-arm/arch-imx/entry-macro.S
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1/*
2 * include/asm-arm/arch-imx/entry-macro.S
3 *
4 * Low-level IRQ helper macros for iMX-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 .macro disable_fiq
11 .endm
12#define AITC_NIVECSR 0x40
13 .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
14 ldr \irqstat, =IO_ADDRESS(IMX_AITC_BASE)
15 @ Load offset & priority of the highest priority
16 @ interrupt pending.
17 ldr \irqnr, [\irqstat, #AITC_NIVECSR]
18 @ Shift off the priority leaving the offset or
19 @ "interrupt number"
20 mov \irqnr, \irqnr, lsr #16
21 ldr \irqstat, =1 @ dummy compare
22 ldr \base, =0xFFFF // invalid interrupt
23 cmp \irqnr, \base
24 bne 1001f
25 ldr \irqstat, =0
261001:
27 tst \irqstat, #1 @ to make the condition code = TRUE
28 .endm
29