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b85e4829 AC |
1 | /* The common simulator framework for GDB, the GNU Debugger. |
2 | ||
3 | Copyright 2002 Free Software Foundation, Inc. | |
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 | |
11 | the Free Software Foundation; either version 2 of the License, or | |
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 | |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
23 | |
24 | ||
25 | #include "sim-main.h" | |
26 | #include "hw-main.h" | |
27 | ||
28 | /* DEVICE | |
29 | ||
30 | core - root of the device tree | |
31 | ||
32 | DESCRIPTION | |
33 | ||
34 | The core device, positioned at the root of the device tree appears | |
35 | to its child devices as a normal device just like every other | |
36 | device in the tree. | |
37 | ||
38 | Internally it is implemented using a core object. Requests to | |
39 | attach (or detach) address spaces are passed to that core object. | |
40 | Requests to transfer (DMA) data are reflected back down the device | |
41 | tree using the core_map data transfer methods. | |
42 | ||
43 | PROPERTIES | |
44 | ||
45 | None. | |
46 | ||
47 | */ | |
48 | ||
49 | ||
50 | static void | |
51 | dv_core_attach_address_callback (struct hw *me, | |
52 | int level, | |
53 | int space, | |
54 | address_word addr, | |
55 | address_word nr_bytes, | |
56 | struct hw *client) | |
57 | { | |
58 | HW_TRACE ((me, "attach - level=%d, space=%d, addr=0x%lx, nr_bytes=%ld, client=%s", | |
59 | level, space, (unsigned long) addr, (unsigned long) nr_bytes, hw_path (client))); | |
60 | /* NOTE: At preset the space is assumed to be zero. Perhaphs the | |
61 | space should be mapped onto something for instance: space0 - | |
62 | unified memory; space1 - IO memory; ... */ | |
c906108c SS |
63 | sim_core_attach (hw_system (me), |
64 | NULL, /*cpu*/ | |
65 | level, | |
66 | access_read_write_exec, | |
67 | space, addr, | |
68 | nr_bytes, | |
69 | 0, /* modulo */ | |
70 | client, | |
71 | NULL); | |
72 | } | |
73 | ||
74 | ||
75 | static unsigned | |
76 | dv_core_dma_read_buffer_callback (struct hw *me, | |
77 | void *dest, | |
78 | int space, | |
79 | unsigned_word addr, | |
80 | unsigned nr_bytes) | |
81 | { | |
82 | return sim_core_read_buffer (hw_system (me), | |
83 | NULL, /*CPU*/ | |
84 | space, /*???*/ | |
85 | dest, | |
86 | addr, | |
87 | nr_bytes); | |
88 | } | |
89 | ||
90 | ||
91 | static unsigned | |
92 | dv_core_dma_write_buffer_callback (struct hw *me, | |
93 | const void *source, | |
94 | int space, | |
95 | unsigned_word addr, | |
96 | unsigned nr_bytes, | |
97 | int violate_read_only_section) | |
98 | { | |
99 | return sim_core_write_buffer (hw_system (me), | |
100 | NULL, /*cpu*/ | |
101 | space, /*???*/ | |
102 | source, | |
103 | addr, | |
104 | nr_bytes); | |
105 | } | |
106 | ||
107 | ||
108 | static void | |
109 | dv_core_finish (struct hw *me) | |
110 | { | |
111 | set_hw_attach_address (me, dv_core_attach_address_callback); | |
112 | set_hw_dma_write_buffer (me, dv_core_dma_write_buffer_callback); | |
113 | set_hw_dma_read_buffer (me, dv_core_dma_read_buffer_callback); | |
114 | } | |
115 | ||
116 | const struct hw_descriptor dv_core_descriptor[] = { | |
117 | { "core", dv_core_finish, }, | |
118 | { NULL }, | |
119 | }; |