diff options
Diffstat (limited to 'arch/arm/mach-shmobile/include/mach/entry-macro.S')
-rw-r--r-- | arch/arm/mach-shmobile/include/mach/entry-macro.S | 104 |
1 files changed, 4 insertions, 100 deletions
diff --git a/arch/arm/mach-shmobile/include/mach/entry-macro.S b/arch/arm/mach-shmobile/include/mach/entry-macro.S index c0c264366d7..26e40116760 100644 --- a/arch/arm/mach-shmobile/include/mach/entry-macro.S +++ b/arch/arm/mach-shmobile/include/mach/entry-macro.S | |||
@@ -1,5 +1,5 @@ | |||
1 | /* | 1 | /* |
2 | * Copyright (C) 2008 Renesas Solutions Corp. | 2 | * Copyright (C) 2010 Paul Mundt |
3 | * | 3 | * |
4 | * This program is free software; you can redistribute it and/or modify | 4 | * This program is free software; you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License as published by | 5 | * it under the terms of the GNU General Public License as published by |
@@ -14,104 +14,8 @@ | |||
14 | * along with this program; if not, write to the Free Software | 14 | * along with this program; if not, write to the Free Software |
15 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | 15 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
16 | */ | 16 | */ |
17 | #include <mach/hardware.h> | 17 | #if defined(CONFIG_ARM_GIC) |
18 | #include <mach/irqs.h> | 18 | #include <mach/entry-macro-gic.S> |
19 | |||
20 | .macro disable_fiq | ||
21 | .endm | ||
22 | |||
23 | #if !defined(CONFIG_ARCH_SH73A0) | ||
24 | .macro get_irqnr_preamble, base, tmp | ||
25 | ldr \base, =INTFLGA | ||
26 | .endm | ||
27 | |||
28 | .macro arch_ret_to_user, tmp1, tmp2 | ||
29 | .endm | ||
30 | |||
31 | .macro get_irqnr_and_base, irqnr, irqstat, base, tmp | ||
32 | ldr \irqnr, [\base] | ||
33 | cmp \irqnr, #0 | ||
34 | beq 1000f | ||
35 | /* intevt to irq number */ | ||
36 | lsr \irqnr, \irqnr, #0x5 | ||
37 | subs \irqnr, \irqnr, #16 | ||
38 | |||
39 | 1000: | ||
40 | .endm | ||
41 | #else | 19 | #else |
42 | /* | 20 | #include <mach/entry-macro-intc.S> |
43 | * arch/arm/mach-realview/include/mach/entry-macro.S | ||
44 | * | ||
45 | * Low-level IRQ helper macros for RealView platforms | ||
46 | * | ||
47 | * This file is licensed under the terms of the GNU General Public | ||
48 | * License version 2. This program is licensed "as is" without any | ||
49 | * warranty of any kind, whether express or implied. | ||
50 | */ | ||
51 | #include <asm/hardware/gic.h> | ||
52 | |||
53 | .macro get_irqnr_preamble, base, tmp | ||
54 | ldr \base, =(0xf0000100) | ||
55 | .endm | ||
56 | |||
57 | .macro arch_ret_to_user, tmp1, tmp2 | ||
58 | .endm | ||
59 | |||
60 | /* | ||
61 | * The interrupt numbering scheme is defined in the | ||
62 | * interrupt controller spec. To wit: | ||
63 | * | ||
64 | * Interrupts 0-15 are IPI | ||
65 | * 16-28 are reserved | ||
66 | * 29-31 are local. We allow 30 to be used for the watchdog. | ||
67 | * 32-1020 are global | ||
68 | * 1021-1022 are reserved | ||
69 | * 1023 is "spurious" (no interrupt) | ||
70 | * | ||
71 | * For now, we ignore all local interrupts so only return an interrupt if it's | ||
72 | * between 30 and 1020. The test_for_ipi routine below will pick up on IPIs. | ||
73 | * | ||
74 | * A simple read from the controller will tell us the number of the highest | ||
75 | * priority enabled interrupt. We then just need to check whether it is in the | ||
76 | * valid range for an IRQ (30-1020 inclusive). | ||
77 | */ | ||
78 | |||
79 | .macro get_irqnr_and_base, irqnr, irqstat, base, tmp | ||
80 | |||
81 | ldr \irqstat, [\base, #GIC_CPU_INTACK] | ||
82 | /* bits 12-10 = src CPU, 9-0 = int # */ | ||
83 | |||
84 | ldr \tmp, =1021 | ||
85 | bic \irqnr, \irqstat, #0x1c00 | ||
86 | cmp \irqnr, #29 | ||
87 | cmpcc \irqnr, \irqnr | ||
88 | cmpne \irqnr, \tmp | ||
89 | cmpcs \irqnr, \irqnr | ||
90 | |||
91 | .endm | ||
92 | |||
93 | /* We assume that irqstat (the raw value of the IRQ acknowledge | ||
94 | * register) is preserved from the macro above. | ||
95 | * If there is an IPI, we immediately signal end of interrupt on the | ||
96 | * controller, since this requires the original irqstat value which | ||
97 | * we won't easily be able to recreate later. | ||
98 | */ | ||
99 | |||
100 | .macro test_for_ipi, irqnr, irqstat, base, tmp | ||
101 | bic \irqnr, \irqstat, #0x1c00 | ||
102 | cmp \irqnr, #16 | ||
103 | strcc \irqstat, [\base, #GIC_CPU_EOI] | ||
104 | cmpcs \irqnr, \irqnr | ||
105 | .endm | ||
106 | |||
107 | /* As above, this assumes that irqstat and base are preserved.. */ | ||
108 | |||
109 | .macro test_for_ltirq, irqnr, irqstat, base, tmp | ||
110 | bic \irqnr, \irqstat, #0x1c00 | ||
111 | mov \tmp, #0 | ||
112 | cmp \irqnr, #29 | ||
113 | moveq \tmp, #1 | ||
114 | streq \irqstat, [\base, #GIC_CPU_EOI] | ||
115 | cmp \tmp, #0 | ||
116 | .endm | ||
117 | #endif | 21 | #endif |