Pull virt-cpu-accounting into release branch
[linux-2.6] / include / asm-arm / arch-pxa / entry-macro.S
1 /*
2  * include/asm-arm/arch-pxa/entry-macro.S
3  *
4  * Low-level IRQ helper macros for PXA-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.h>
11 #include <asm/arch/irqs.h>
12
13                 .macro  disable_fiq
14                 .endm
15
16                 .macro  get_irqnr_preamble, base, tmp
17                 .endm
18
19                 .macro  arch_ret_to_user, tmp1, tmp2
20                 .endm
21
22                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
23                 mrc     p15, 0, \tmp, c0, c0, 0         @ CPUID
24                 mov     \tmp, \tmp, lsr #13
25                 and     \tmp, \tmp, #0x7                @ Core G
26                 cmp     \tmp, #1
27                 bhi     1004f
28
29                 mov     \base, #io_p2v(0x40000000)      @ IIR Ctl = 0x40d00000
30                 add     \base, \base, #0x00d00000
31                 ldr     \irqstat, [\base, #0]           @ ICIP
32                 ldr     \irqnr, [\base, #4]             @ ICMR
33                 b       1002f
34
35 1004:
36                 mrc     p6, 0, \irqstat, c6, c0, 0      @ ICIP2
37                 mrc     p6, 0, \irqnr, c7, c0, 0        @ ICMR2
38                 ands    \irqnr, \irqstat, \irqnr
39                 beq     1003f
40                 rsb     \irqstat, \irqnr, #0
41                 and     \irqstat, \irqstat, \irqnr
42                 clz     \irqnr, \irqstat
43                 rsb     \irqnr, \irqnr, #31
44                 add     \irqnr, \irqnr, #32
45                 b       1001f
46 1003:
47                 mrc     p6, 0, \irqstat, c0, c0, 0      @ ICIP
48                 mrc     p6, 0, \irqnr, c1, c0, 0        @ ICMR
49 1002:
50                 ands    \irqnr, \irqstat, \irqnr
51                 beq     1001f
52                 rsb     \irqstat, \irqnr, #0
53                 and     \irqstat, \irqstat, \irqnr
54                 clz     \irqnr, \irqstat
55                 rsb     \irqnr, \irqnr, #31
56 1001:
57                 .endm