blob: 82463f30f3dfc7e02dcbbafd270e352aa1c1a048 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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
Dan Williamsf80dff92007-02-16 22:16:32 +010013 .macro get_irqnr_preamble, base, tmp
14 .endm
15
16 .macro arch_ret_to_user, tmp1, tmp2
17 .endm
18
Linus Torvalds1da177e2005-04-16 15:20:36 -070019 .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
3143: 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
3944: teq \irqstat, #0
40 .endm
41