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b85e4829 AC |
1 | /* The common simulator framework for GDB, the GNU Debugger. |
2 | ||
9b254dd1 | 3 | Copyright 2002, 2007, 2008 Free Software Foundation, Inc. |
b85e4829 AC |
4 | |
5 | Contributed by Andrew Cagney and Red Hat. | |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
4744ac1b | 11 | the Free Software Foundation; either version 3 of the License, or |
b85e4829 AC |
12 | (at your option) any later version. |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
4744ac1b | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | ||
23 | #include "sim-main.h" | |
24 | #include "hw-main.h" | |
25 | ||
26 | /* DEVICE | |
27 | ||
28 | core - root of the device tree | |
29 | ||
30 | DESCRIPTION | |
31 | ||
32 | The core device, positioned at the root of the device tree appears | |
33 | to its child devices as a normal device just like every other | |
34 | device in the tree. | |
35 | ||
36 | Internally it is implemented using a core object. Requests to | |
37 | attach (or detach) address spaces are passed to that core object. | |
38 | Requests to transfer (DMA) data are reflected back down the device | |
39 | tree using the core_map data transfer methods. | |
40 | ||
41 | PROPERTIES | |
42 | ||
43 | None. | |
44 | ||
45 | */ | |
46 | ||
47 | ||
48 | static void | |
49 | dv_core_attach_address_callback (struct hw *me, | |
50 | int level, | |
51 | int space, | |
52 | address_word addr, | |
53 | address_word nr_bytes, | |
54 | struct hw *client) | |
55 | { | |
56 | HW_TRACE ((me, "attach - level=%d, space=%d, addr=0x%lx, nr_bytes=%ld, client=%s", | |
57 | level, space, (unsigned long) addr, (unsigned long) nr_bytes, hw_path (client))); | |
58 | /* NOTE: At preset the space is assumed to be zero. Perhaphs the | |
59 | space should be mapped onto something for instance: space0 - | |
60 | unified memory; space1 - IO memory; ... */ | |
c906108c SS |
61 | sim_core_attach (hw_system (me), |
62 | NULL, /*cpu*/ | |
63 | level, | |
64 | access_read_write_exec, | |
65 | space, addr, | |
66 | nr_bytes, | |
67 | 0, /* modulo */ | |
68 | client, | |
69 | NULL); | |
70 | } | |
71 | ||
72 | ||
73 | static unsigned | |
74 | dv_core_dma_read_buffer_callback (struct hw *me, | |
75 | void *dest, | |
76 | int space, | |
77 | unsigned_word addr, | |
78 | unsigned nr_bytes) | |
79 | { | |
80 | return sim_core_read_buffer (hw_system (me), | |
81 | NULL, /*CPU*/ | |
82 | space, /*???*/ | |
83 | dest, | |
84 | addr, | |
85 | nr_bytes); | |
86 | } | |
87 | ||
88 | ||
89 | static unsigned | |
90 | dv_core_dma_write_buffer_callback (struct hw *me, | |
91 | const void *source, | |
92 | int space, | |
93 | unsigned_word addr, | |
94 | unsigned nr_bytes, | |
95 | int violate_read_only_section) | |
96 | { | |
97 | return sim_core_write_buffer (hw_system (me), | |
98 | NULL, /*cpu*/ | |
99 | space, /*???*/ | |
100 | source, | |
101 | addr, | |
102 | nr_bytes); | |
103 | } | |
104 | ||
105 | ||
106 | static void | |
107 | dv_core_finish (struct hw *me) | |
108 | { | |
109 | set_hw_attach_address (me, dv_core_attach_address_callback); | |
110 | set_hw_dma_write_buffer (me, dv_core_dma_write_buffer_callback); | |
111 | set_hw_dma_read_buffer (me, dv_core_dma_read_buffer_callback); | |
112 | } | |
113 | ||
114 | const struct hw_descriptor dv_core_descriptor[] = { | |
115 | { "core", dv_core_finish, }, | |
116 | { NULL }, | |
117 | }; |