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-rw-r--r--include/asm-arm/arch-s3c2410/entry-macro.S78
1 files changed, 0 insertions, 78 deletions
diff --git a/include/asm-arm/arch-s3c2410/entry-macro.S b/include/asm-arm/arch-s3c2410/entry-macro.S
deleted file mode 100644
index f70d051b267b..000000000000
--- a/include/asm-arm/arch-s3c2410/entry-macro.S
+++ /dev/null
@@ -1,78 +0,0 @@
1/*
2 * include/asm-arm/arch-s3c2410/entry-macro.S
3 *
4 * Low-level IRQ helper macros for S3C2410-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/* We have a problem that the INTOFFSET register does not always
12 * show one interrupt. Occasionally we get two interrupts through
13 * the prioritiser, and this causes the INTOFFSET register to show
14 * what looks like the logical-or of the two interrupt numbers.
15 *
16 * Thanks to Klaus, Shannon, et al for helping to debug this problem
17*/
18
19#define INTPND (0x10)
20#define INTOFFSET (0x14)
21
22#include <asm/arch/hardware.h>
23#include <asm/irq.h>
24
25 .macro get_irqnr_preamble, base, tmp
26 .endm
27
28 .macro arch_ret_to_user, tmp1, tmp2
29 .endm
30
31 .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
32
33 mov \base, #S3C24XX_VA_IRQ
34
35 @@ try the interrupt offset register, since it is there
36
37 ldr \irqstat, [ \base, #INTPND ]
38 teq \irqstat, #0
39 beq 1002f
40 ldr \irqnr, [ \base, #INTOFFSET ]
41 mov \tmp, #1
42 tst \irqstat, \tmp, lsl \irqnr
43 bne 1001f
44
45 @@ the number specified is not a valid irq, so try
46 @@ and work it out for ourselves
47
48 mov \irqnr, #0 @@ start here
49
50 @@ work out which irq (if any) we got
51
52 movs \tmp, \irqstat, lsl#16
53 addeq \irqnr, \irqnr, #16
54 moveq \irqstat, \irqstat, lsr#16
55 tst \irqstat, #0xff
56 addeq \irqnr, \irqnr, #8
57 moveq \irqstat, \irqstat, lsr#8
58 tst \irqstat, #0xf
59 addeq \irqnr, \irqnr, #4
60 moveq \irqstat, \irqstat, lsr#4
61 tst \irqstat, #0x3
62 addeq \irqnr, \irqnr, #2
63 moveq \irqstat, \irqstat, lsr#2
64 tst \irqstat, #0x1
65 addeq \irqnr, \irqnr, #1
66
67 @@ we have the value
681001:
69 adds \irqnr, \irqnr, #IRQ_EINT0
701002:
71 @@ exit here, Z flag unset if IRQ
72
73 .endm
74
75 /* currently don't need an disable_fiq macro */
76
77 .macro disable_fiq
78 .endm