root / hw / realview_gic.c @ dd4239d6
History | View | Annotate | Download (1.9 kB)
1 | 9ee6e8bb | pbrook | /*
|
---|---|---|---|
2 | 9ee6e8bb | pbrook | * ARM RealView Emulation Baseboard Interrupt Controller
|
3 | 9ee6e8bb | pbrook | *
|
4 | 9ee6e8bb | pbrook | * Copyright (c) 2006-2007 CodeSourcery.
|
5 | 9ee6e8bb | pbrook | * Written by Paul Brook
|
6 | 9ee6e8bb | pbrook | *
|
7 | 9ee6e8bb | pbrook | * This code is licenced under the GPL.
|
8 | 9ee6e8bb | pbrook | */
|
9 | 9ee6e8bb | pbrook | |
10 | fe7e8758 | Paul Brook | #include "sysbus.h" |
11 | 9ee6e8bb | pbrook | |
12 | 9ee6e8bb | pbrook | #define GIC_NIRQ 96 |
13 | 9ee6e8bb | pbrook | #define NCPU 1 |
14 | 9ee6e8bb | pbrook | |
15 | 9ee6e8bb | pbrook | /* Only a single "CPU" interface is present. */
|
16 | 9ee6e8bb | pbrook | static inline int |
17 | 9ee6e8bb | pbrook | gic_get_current_cpu(void)
|
18 | 9ee6e8bb | pbrook | { |
19 | 9ee6e8bb | pbrook | return 0; |
20 | 9ee6e8bb | pbrook | } |
21 | 9ee6e8bb | pbrook | |
22 | 9ee6e8bb | pbrook | #include "arm_gic.c" |
23 | 9ee6e8bb | pbrook | |
24 | fe7e8758 | Paul Brook | typedef struct { |
25 | fe7e8758 | Paul Brook | gic_state gic; |
26 | fe7e8758 | Paul Brook | int iomemtype;
|
27 | fe7e8758 | Paul Brook | } RealViewGICState; |
28 | fe7e8758 | Paul Brook | |
29 | c227f099 | Anthony Liguori | static uint32_t realview_gic_cpu_read(void *opaque, target_phys_addr_t offset) |
30 | 9ee6e8bb | pbrook | { |
31 | 9ee6e8bb | pbrook | gic_state *s = (gic_state *)opaque; |
32 | 9ee6e8bb | pbrook | return gic_cpu_read(s, gic_get_current_cpu(), offset);
|
33 | 9ee6e8bb | pbrook | } |
34 | 9ee6e8bb | pbrook | |
35 | c227f099 | Anthony Liguori | static void realview_gic_cpu_write(void *opaque, target_phys_addr_t offset, |
36 | 9ee6e8bb | pbrook | uint32_t value) |
37 | 9ee6e8bb | pbrook | { |
38 | 9ee6e8bb | pbrook | gic_state *s = (gic_state *)opaque; |
39 | 9ee6e8bb | pbrook | gic_cpu_write(s, gic_get_current_cpu(), offset, value); |
40 | 9ee6e8bb | pbrook | } |
41 | 9ee6e8bb | pbrook | |
42 | d60efc6b | Blue Swirl | static CPUReadMemoryFunc * const realview_gic_cpu_readfn[] = { |
43 | 9ee6e8bb | pbrook | realview_gic_cpu_read, |
44 | 9ee6e8bb | pbrook | realview_gic_cpu_read, |
45 | 9ee6e8bb | pbrook | realview_gic_cpu_read |
46 | 9ee6e8bb | pbrook | }; |
47 | 9ee6e8bb | pbrook | |
48 | d60efc6b | Blue Swirl | static CPUWriteMemoryFunc * const realview_gic_cpu_writefn[] = { |
49 | 9ee6e8bb | pbrook | realview_gic_cpu_write, |
50 | 9ee6e8bb | pbrook | realview_gic_cpu_write, |
51 | 9ee6e8bb | pbrook | realview_gic_cpu_write |
52 | 9ee6e8bb | pbrook | }; |
53 | 9ee6e8bb | pbrook | |
54 | c227f099 | Anthony Liguori | static void realview_gic_map(SysBusDevice *dev, target_phys_addr_t base) |
55 | 9ee6e8bb | pbrook | { |
56 | fe7e8758 | Paul Brook | RealViewGICState *s = FROM_SYSBUSGIC(RealViewGICState, dev); |
57 | fe7e8758 | Paul Brook | cpu_register_physical_memory(base, 0x1000, s->iomemtype);
|
58 | fe7e8758 | Paul Brook | cpu_register_physical_memory(base + 0x1000, 0x1000, s->gic.iomemtype); |
59 | fe7e8758 | Paul Brook | } |
60 | fe7e8758 | Paul Brook | |
61 | 81a322d4 | Gerd Hoffmann | static int realview_gic_init(SysBusDevice *dev) |
62 | fe7e8758 | Paul Brook | { |
63 | fe7e8758 | Paul Brook | RealViewGICState *s = FROM_SYSBUSGIC(RealViewGICState, dev); |
64 | 9ee6e8bb | pbrook | |
65 | fe7e8758 | Paul Brook | gic_init(&s->gic); |
66 | 1eed09cb | Avi Kivity | s->iomemtype = cpu_register_io_memory(realview_gic_cpu_readfn, |
67 | fe7e8758 | Paul Brook | realview_gic_cpu_writefn, s); |
68 | fe7e8758 | Paul Brook | sysbus_init_mmio_cb(dev, 0x2000, realview_gic_map);
|
69 | 81a322d4 | Gerd Hoffmann | return 0; |
70 | 9ee6e8bb | pbrook | } |
71 | fe7e8758 | Paul Brook | |
72 | fe7e8758 | Paul Brook | static void realview_gic_register_devices(void) |
73 | fe7e8758 | Paul Brook | { |
74 | fe7e8758 | Paul Brook | sysbus_register_dev("realview_gic", sizeof(RealViewGICState), |
75 | fe7e8758 | Paul Brook | realview_gic_init); |
76 | fe7e8758 | Paul Brook | } |
77 | fe7e8758 | Paul Brook | |
78 | fe7e8758 | Paul Brook | device_init(realview_gic_register_devices) |