ARM: cpu topology: Add debugfs interface for cpu_power
[cmplus.git] / arch / arm / mach-integrator / include / mach / entry-macro.S
blob3d029c9f3ef63b789eac59c63be29590808fe077
1 /*
2  * arch/arm/mach-integrator/include/mach/entry-macro.S
3  *
4  * Low-level IRQ helper macros for Integrator 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 <mach/hardware.h>
11 #include <mach/platform.h>
12 #include <mach/irqs.h>
14                 .macro  disable_fiq
15                 .endm
17                 .macro  get_irqnr_preamble, base, tmp
18                 .endm
20                 .macro  arch_ret_to_user, tmp1, tmp2
21                 .endm
23                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
24 /* FIXME: should not be using soo many LDRs here */
25                 ldr     \base, =IO_ADDRESS(INTEGRATOR_IC_BASE)
26                 mov     \irqnr, #IRQ_PIC_START
27                 ldr     \irqstat, [\base, #IRQ_STATUS]          @ get masked status
28                 ldr     \base, =IO_ADDRESS(INTEGRATOR_HDR_BASE)
29                 teq     \irqstat, #0
30                 ldreq   \irqstat, [\base, #(INTEGRATOR_HDR_IC_OFFSET+IRQ_STATUS)]
31                 moveq   \irqnr, #IRQ_CIC_START
33 1001:           tst     \irqstat, #15
34                 bne     1002f
35                 add     \irqnr, \irqnr, #4
36                 movs    \irqstat, \irqstat, lsr #4
37                 bne     1001b
38 1002:           tst     \irqstat, #1
39                 bne     1003f
40                 add     \irqnr, \irqnr, #1
41                 movs    \irqstat, \irqstat, lsr #1
42                 bne     1002b
43 1003:           /* EQ will be set if no irqs pending */
44                 .endm