[ARM] 3822/1: iop3xx: rewrite time handling
[linux-2.6] / include / asm-arm / arch-iop33x / entry-macro.S
1 /*
2  * include/asm-arm/arch-iop33x/entry-macro.S
3  *
4  * Low-level IRQ helper macros for IOP33x-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/arch/irqs.h>
11
12                 .macro  disable_fiq
13                 .endm
14
15                 /*
16                  * Note: only deal with normal interrupts, not FIQ
17                  */
18                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
19                 mov     \irqnr, #0
20                 mrc     p6, 0, \irqstat, c4, c0, 0      @ Read IINTSRC0
21                 cmp     \irqstat, #0
22                 bne     1002f
23                 mrc     p6, 0, \irqstat, c5, c0, 0      @ Read IINTSRC1
24                 cmp     \irqstat, #0
25                 beq     1001f
26                 clz     \irqnr, \irqstat
27                 rsbs    \irqnr,\irqnr,#31   @ recommend by RMK
28                 add     \irqnr,\irqnr,#IRQ_IOP331_XINT8
29                 b       1001f
30 1002:           clz     \irqnr, \irqstat
31                 rsbs    \irqnr,\irqnr,#31   @ recommend by RMK
32                 add     \irqnr,\irqnr,#IRQ_IOP331_DMA0_EOT
33 1001:
34                 .endm