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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-clps711x/entry-macro.S
Linux-2.6.12-rc2v2.6.12-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-clps711x/entry-macro.S')
-rw-r--r--include/asm-arm/arch-clps711x/entry-macro.S51
1 files changed, 51 insertions, 0 deletions
diff --git a/include/asm-arm/arch-clps711x/entry-macro.S b/include/asm-arm/arch-clps711x/entry-macro.S
new file mode 100644
index 000000000000..b31079a1d4a9
--- /dev/null
+++ b/include/asm-arm/arch-clps711x/entry-macro.S
@@ -0,0 +1,51 @@
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/clps7111.h>
11
12 .macro disable_fiq
13 .endm
14
15#if (INTSR2 - INTSR1) != (INTMR2 - INTMR1)
16#error INTSR stride != INTMR stride
17#endif
18
19 .macro get_irqnr_and_base, irqnr, stat, base, mask
20 mov \base, #CLPS7111_BASE
21 ldr \stat, [\base, #INTSR1]
22 ldr \mask, [\base, #INTMR1]
23 mov \irqnr, #4
24 mov \mask, \mask, lsl #16
25 and \stat, \stat, \mask, lsr #16
26 movs \stat, \stat, lsr #4
27 bne 1001f
28
29 add \base, \base, #INTSR2 - INTSR1
30 ldr \stat, [\base, #INTSR1]
31 ldr \mask, [\base, #INTMR1]
32 mov \irqnr, #16
33 mov \mask, \mask, lsl #16
34 and \stat, \stat, \mask, lsr #16
35
361001: tst \stat, #255
37 addeq \irqnr, \irqnr, #8
38 moveq \stat, \stat, lsr #8
39 tst \stat, #15
40 addeq \irqnr, \irqnr, #4
41 moveq \stat, \stat, lsr #4
42 tst \stat, #3
43 addeq \irqnr, \irqnr, #2
44 moveq \stat, \stat, lsr #2
45 tst \stat, #1
46 addeq \irqnr, \irqnr, #1
47 moveq \stat, \stat, lsr #1
48 tst \stat, #1 @ bit 0 should be set
49 .endm
50
51