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1da177e4 LT |
1 | /* |
2 | * include/asm-arm/arch-shark/entry-macro.S | |
3 | * | |
4 | * Low-level IRQ helper macros for Shark platform | |
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 | ||
f80dff9d DW |
13 | .macro get_irqnr_preamble, base, tmp |
14 | .endm | |
15 | ||
16 | .macro arch_ret_to_user, tmp1, tmp2 | |
17 | .endm | |
18 | ||
1da177e4 LT |
19 | .macro get_irqnr_and_base, irqnr, irqstat, base, tmp |
20 | mov r4, #0xe0000000 | |
21 | ||
22 | mov \irqstat, #0x0C | |
23 | strb \irqstat, [r4, #0x20] @outb(0x0C, 0x20) /* Poll command */ | |
24 | ldrb \irqnr, [r4, #0x20] @irq = inb(0x20) & 7 | |
25 | and \irqstat, \irqnr, #0x80 | |
26 | teq \irqstat, #0 | |
27 | beq 43f | |
28 | and \irqnr, \irqnr, #7 | |
29 | teq \irqnr, #2 | |
30 | bne 44f | |
31 | 43: mov \irqstat, #0x0C | |
32 | strb \irqstat, [r4, #0xa0] @outb(0x0C, 0xA0) /* Poll command */ | |
33 | ldrb \irqnr, [r4, #0xa0] @irq = (inb(0xA0) & 7) + 8 | |
34 | and \irqstat, \irqnr, #0x80 | |
35 | teq \irqstat, #0 | |
36 | beq 44f | |
37 | and \irqnr, \irqnr, #7 | |
38 | add \irqnr, \irqnr, #8 | |
39 | 44: teq \irqstat, #0 | |
40 | .endm | |
41 |