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c906108c SS |
1 | /* This file is part of the program psim. |
2 | ||
3 | Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au> | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the Free Software | |
17 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
18 | ||
19 | */ | |
20 | ||
21 | ||
22 | #ifndef _DEVICE_TABLE_C_ | |
23 | #define _DEVICE_TABLE_C_ | |
24 | ||
25 | #include "device_table.h" | |
26 | ||
27 | #if HAVE_STDLIB_H | |
28 | #include <stdlib.h> | |
29 | #endif | |
30 | ||
31 | #include <ctype.h> | |
32 | ||
33 | ||
34 | /* Helper functions */ | |
35 | ||
36 | ||
37 | /* Go through the devices various reg properties for those that | |
38 | specify attach addresses */ | |
39 | ||
40 | ||
41 | void | |
42 | generic_device_init_address(device *me) | |
43 | { | |
44 | static const char *(reg_property_names[]) = { | |
45 | "attach-addresses", | |
46 | "assigned-addresses", | |
47 | "reg", | |
48 | "alternate-reg" , | |
49 | NULL | |
50 | }; | |
51 | const char **reg_property_name; | |
52 | int nr_valid_reg_properties = 0; | |
53 | for (reg_property_name = reg_property_names; | |
54 | *reg_property_name != NULL; | |
55 | reg_property_name++) { | |
56 | if (device_find_property(me, *reg_property_name) != NULL) { | |
57 | reg_property_spec reg; | |
58 | int reg_entry; | |
59 | for (reg_entry = 0; | |
60 | device_find_reg_array_property(me, *reg_property_name, reg_entry, | |
61 | ®); | |
62 | reg_entry++) { | |
63 | unsigned_word attach_address; | |
64 | int attach_space; | |
65 | unsigned attach_size; | |
66 | if (!device_address_to_attach_address(device_parent(me), | |
67 | ®.address, | |
68 | &attach_space, &attach_address, | |
69 | me)) | |
70 | continue; | |
71 | if (!device_size_to_attach_size(device_parent(me), | |
72 | ®.size, | |
73 | &attach_size, me)) | |
74 | continue; | |
75 | device_attach_address(device_parent(me), | |
76 | attach_callback, | |
77 | attach_space, attach_address, attach_size, | |
78 | access_read_write_exec, | |
79 | me); | |
80 | nr_valid_reg_properties++; | |
81 | } | |
82 | /* if first option matches don't try for any others */ | |
83 | if (reg_property_name == reg_property_names) | |
84 | break; | |
85 | } | |
86 | } | |
87 | } | |
88 | ||
89 | int | |
90 | generic_device_unit_decode(device *bus, | |
91 | const char *unit, | |
92 | device_unit *phys) | |
93 | { | |
94 | memset(phys, 0, sizeof(device_unit)); | |
95 | if (unit == NULL) | |
96 | return 0; | |
97 | else { | |
98 | int nr_cells = 0; | |
99 | const int max_nr_cells = device_nr_address_cells(bus); | |
100 | while (1) { | |
101 | char *end = NULL; | |
102 | unsigned long val; | |
103 | val = strtoul(unit, &end, 0); | |
104 | /* parse error? */ | |
105 | if (unit == end) | |
106 | return -1; | |
107 | /* two many cells? */ | |
108 | if (nr_cells >= max_nr_cells) | |
109 | return -1; | |
110 | /* save it */ | |
111 | phys->cells[nr_cells] = val; | |
112 | nr_cells++; | |
113 | unit = end; | |
114 | /* more to follow? */ | |
115 | if (isspace(*unit) || *unit == '\0') | |
116 | break; | |
117 | if (*unit != ',') | |
118 | return -1; | |
119 | unit++; | |
120 | } | |
121 | if (nr_cells < max_nr_cells) { | |
122 | /* shift everything to correct position */ | |
123 | int i; | |
124 | for (i = 1; i <= nr_cells; i++) | |
125 | phys->cells[max_nr_cells - i] = phys->cells[nr_cells - i]; | |
126 | for (i = 0; i < (max_nr_cells - nr_cells); i++) | |
127 | phys->cells[i] = 0; | |
128 | } | |
129 | phys->nr_cells = max_nr_cells; | |
130 | return max_nr_cells; | |
131 | } | |
132 | } | |
133 | ||
134 | int | |
135 | generic_device_unit_encode(device *bus, | |
136 | const device_unit *phys, | |
137 | char *buf, | |
138 | int sizeof_buf) | |
139 | { | |
140 | int i; | |
141 | int len; | |
142 | char *pos = buf; | |
143 | /* skip leading zero's */ | |
144 | for (i = 0; i < phys->nr_cells; i++) { | |
145 | if (phys->cells[i] != 0) | |
146 | break; | |
147 | } | |
148 | /* don't output anything if empty */ | |
149 | if (phys->nr_cells == 0) { | |
150 | strcpy(pos, ""); | |
151 | len = 0; | |
152 | } | |
153 | else if (i == phys->nr_cells) { | |
154 | /* all zero */ | |
155 | strcpy(pos, "0"); | |
156 | len = 1; | |
157 | } | |
158 | else { | |
159 | for (; i < phys->nr_cells; i++) { | |
160 | if (pos != buf) { | |
161 | strcat(pos, ","); | |
162 | pos = strchr(pos, '\0'); | |
163 | } | |
164 | if (phys->cells[i] < 10) | |
165 | sprintf(pos, "%ld", (unsigned long)phys->cells[i]); | |
166 | else | |
167 | sprintf(pos, "0x%lx", (unsigned long)phys->cells[i]); | |
168 | pos = strchr(pos, '\0'); | |
169 | } | |
170 | len = pos - buf; | |
171 | } | |
172 | if (len >= sizeof_buf) | |
173 | error("generic_unit_encode - buffer overflow\n"); | |
174 | return len; | |
175 | } | |
176 | ||
177 | int | |
178 | generic_device_address_to_attach_address(device *me, | |
179 | const device_unit *address, | |
180 | int *attach_space, | |
181 | unsigned_word *attach_address, | |
182 | device *client) | |
183 | { | |
184 | int i; | |
185 | for (i = 0; i < address->nr_cells - 2; i++) { | |
186 | if (address->cells[i] != 0) | |
187 | device_error(me, "Only 32bit addresses supported"); | |
188 | } | |
189 | if (address->nr_cells >= 2) | |
190 | *attach_space = address->cells[address->nr_cells - 2]; | |
191 | else | |
192 | *attach_space = 0; | |
193 | *attach_address = address->cells[address->nr_cells - 1]; | |
194 | return 1; | |
195 | } | |
196 | ||
197 | int | |
198 | generic_device_size_to_attach_size(device *me, | |
199 | const device_unit *size, | |
200 | unsigned *nr_bytes, | |
201 | device *client) | |
202 | { | |
203 | int i; | |
204 | for (i = 0; i < size->nr_cells - 1; i++) { | |
205 | if (size->cells[i] != 0) | |
206 | device_error(me, "Only 32bit sizes supported"); | |
207 | } | |
208 | *nr_bytes = size->cells[0]; | |
209 | return *nr_bytes; | |
210 | } | |
211 | ||
212 | ||
213 | /* ignore/passthrough versions of each function */ | |
214 | ||
215 | void | |
216 | passthrough_device_address_attach(device *me, | |
217 | attach_type attach, | |
218 | int space, | |
219 | unsigned_word addr, | |
220 | unsigned nr_bytes, | |
221 | access_type access, | |
222 | device *client) /*callback/default*/ | |
223 | { | |
224 | device_attach_address(device_parent(me), attach, | |
225 | space, addr, nr_bytes, | |
226 | access, | |
227 | client); | |
228 | } | |
229 | ||
230 | void | |
231 | passthrough_device_address_detach(device *me, | |
232 | attach_type attach, | |
233 | int space, | |
234 | unsigned_word addr, | |
235 | unsigned nr_bytes, | |
236 | access_type access, | |
237 | device *client) /*callback/default*/ | |
238 | { | |
239 | device_detach_address(device_parent(me), attach, | |
240 | space, addr, nr_bytes, access, | |
241 | client); | |
242 | } | |
243 | ||
244 | unsigned | |
245 | passthrough_device_dma_read_buffer(device *me, | |
246 | void *dest, | |
247 | int space, | |
248 | unsigned_word addr, | |
249 | unsigned nr_bytes) | |
250 | { | |
251 | return device_dma_read_buffer(device_parent(me), dest, | |
252 | space, addr, nr_bytes); | |
253 | } | |
254 | ||
255 | unsigned | |
256 | passthrough_device_dma_write_buffer(device *me, | |
257 | const void *source, | |
258 | int space, | |
259 | unsigned_word addr, | |
260 | unsigned nr_bytes, | |
261 | int violate_read_only_section) | |
262 | { | |
263 | return device_dma_write_buffer(device_parent(me), source, | |
264 | space, addr, | |
265 | nr_bytes, | |
266 | violate_read_only_section); | |
267 | } | |
268 | ||
269 | int | |
270 | ignore_device_unit_decode(device *me, | |
271 | const char *unit, | |
272 | device_unit *phys) | |
273 | { | |
274 | memset(phys, 0, sizeof(device_unit)); | |
275 | return 0; | |
276 | } | |
277 | ||
278 | ||
279 | static const device_callbacks passthrough_callbacks = { | |
280 | { NULL, }, /* init */ | |
281 | { passthrough_device_address_attach, | |
282 | passthrough_device_address_detach, }, | |
283 | { NULL, }, /* IO */ | |
284 | { passthrough_device_dma_read_buffer, passthrough_device_dma_write_buffer, }, | |
285 | { NULL, }, /* interrupt */ | |
286 | { generic_device_unit_decode, | |
287 | generic_device_unit_encode, }, | |
288 | }; | |
289 | ||
290 | ||
291 | static const device_descriptor ob_device_table[] = { | |
292 | /* standard OpenBoot devices */ | |
293 | { "aliases", NULL, &passthrough_callbacks }, | |
294 | { "options", NULL, &passthrough_callbacks }, | |
295 | { "chosen", NULL, &passthrough_callbacks }, | |
296 | { "packages", NULL, &passthrough_callbacks }, | |
297 | { "cpus", NULL, &passthrough_callbacks }, | |
298 | { "openprom", NULL, &passthrough_callbacks }, | |
299 | { "init", NULL, &passthrough_callbacks }, | |
300 | { NULL }, | |
301 | }; | |
302 | ||
303 | const device_descriptor *const device_table[] = { | |
304 | ob_device_table, | |
305 | #include "hw.c" | |
306 | NULL, | |
307 | }; | |
308 | ||
309 | ||
310 | #endif /* _DEVICE_TABLE_C_ */ |