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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 | |
3fd725ef | 7 | the Free Software Foundation; either version 3 of the License, or |
c906108c SS |
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 | |
51b318de | 16 | along with this program; if not, see <http://www.gnu.org/licenses/>. |
c906108c SS |
17 | |
18 | */ | |
19 | ||
20 | ||
21 | #ifndef _DEVICE_TABLE_C_ | |
22 | #define _DEVICE_TABLE_C_ | |
23 | ||
24 | #include "device_table.h" | |
25 | ||
26 | #if HAVE_STDLIB_H | |
27 | #include <stdlib.h> | |
28 | #endif | |
29 | ||
30 | #include <ctype.h> | |
31 | ||
32 | ||
33 | /* Helper functions */ | |
34 | ||
35 | ||
36 | /* Go through the devices various reg properties for those that | |
37 | specify attach addresses */ | |
38 | ||
39 | ||
40 | void | |
41 | generic_device_init_address(device *me) | |
42 | { | |
43 | static const char *(reg_property_names[]) = { | |
44 | "attach-addresses", | |
45 | "assigned-addresses", | |
46 | "reg", | |
47 | "alternate-reg" , | |
48 | NULL | |
49 | }; | |
50 | const char **reg_property_name; | |
51 | int nr_valid_reg_properties = 0; | |
52 | for (reg_property_name = reg_property_names; | |
53 | *reg_property_name != NULL; | |
54 | reg_property_name++) { | |
55 | if (device_find_property(me, *reg_property_name) != NULL) { | |
56 | reg_property_spec reg; | |
57 | int reg_entry; | |
58 | for (reg_entry = 0; | |
59 | device_find_reg_array_property(me, *reg_property_name, reg_entry, | |
60 | ®); | |
61 | reg_entry++) { | |
62 | unsigned_word attach_address; | |
63 | int attach_space; | |
64 | unsigned attach_size; | |
65 | if (!device_address_to_attach_address(device_parent(me), | |
66 | ®.address, | |
67 | &attach_space, &attach_address, | |
68 | me)) | |
69 | continue; | |
70 | if (!device_size_to_attach_size(device_parent(me), | |
71 | ®.size, | |
72 | &attach_size, me)) | |
73 | continue; | |
74 | device_attach_address(device_parent(me), | |
75 | attach_callback, | |
76 | attach_space, attach_address, attach_size, | |
77 | access_read_write_exec, | |
78 | me); | |
79 | nr_valid_reg_properties++; | |
80 | } | |
81 | /* if first option matches don't try for any others */ | |
82 | if (reg_property_name == reg_property_names) | |
83 | break; | |
84 | } | |
85 | } | |
86 | } | |
87 | ||
88 | int | |
89 | generic_device_unit_decode(device *bus, | |
90 | const char *unit, | |
91 | device_unit *phys) | |
92 | { | |
93 | memset(phys, 0, sizeof(device_unit)); | |
94 | if (unit == NULL) | |
95 | return 0; | |
96 | else { | |
97 | int nr_cells = 0; | |
98 | const int max_nr_cells = device_nr_address_cells(bus); | |
99 | while (1) { | |
100 | char *end = NULL; | |
101 | unsigned long val; | |
102 | val = strtoul(unit, &end, 0); | |
103 | /* parse error? */ | |
104 | if (unit == end) | |
105 | return -1; | |
106 | /* two many cells? */ | |
107 | if (nr_cells >= max_nr_cells) | |
108 | return -1; | |
109 | /* save it */ | |
110 | phys->cells[nr_cells] = val; | |
111 | nr_cells++; | |
112 | unit = end; | |
113 | /* more to follow? */ | |
114 | if (isspace(*unit) || *unit == '\0') | |
115 | break; | |
116 | if (*unit != ',') | |
117 | return -1; | |
118 | unit++; | |
119 | } | |
120 | if (nr_cells < max_nr_cells) { | |
121 | /* shift everything to correct position */ | |
122 | int i; | |
123 | for (i = 1; i <= nr_cells; i++) | |
124 | phys->cells[max_nr_cells - i] = phys->cells[nr_cells - i]; | |
125 | for (i = 0; i < (max_nr_cells - nr_cells); i++) | |
126 | phys->cells[i] = 0; | |
127 | } | |
128 | phys->nr_cells = max_nr_cells; | |
129 | return max_nr_cells; | |
130 | } | |
131 | } | |
132 | ||
133 | int | |
134 | generic_device_unit_encode(device *bus, | |
135 | const device_unit *phys, | |
136 | char *buf, | |
137 | int sizeof_buf) | |
138 | { | |
139 | int i; | |
140 | int len; | |
141 | char *pos = buf; | |
142 | /* skip leading zero's */ | |
143 | for (i = 0; i < phys->nr_cells; i++) { | |
144 | if (phys->cells[i] != 0) | |
145 | break; | |
146 | } | |
147 | /* don't output anything if empty */ | |
148 | if (phys->nr_cells == 0) { | |
149 | strcpy(pos, ""); | |
150 | len = 0; | |
151 | } | |
152 | else if (i == phys->nr_cells) { | |
153 | /* all zero */ | |
154 | strcpy(pos, "0"); | |
155 | len = 1; | |
156 | } | |
157 | else { | |
158 | for (; i < phys->nr_cells; i++) { | |
159 | if (pos != buf) { | |
160 | strcat(pos, ","); | |
161 | pos = strchr(pos, '\0'); | |
162 | } | |
163 | if (phys->cells[i] < 10) | |
164 | sprintf(pos, "%ld", (unsigned long)phys->cells[i]); | |
165 | else | |
166 | sprintf(pos, "0x%lx", (unsigned long)phys->cells[i]); | |
167 | pos = strchr(pos, '\0'); | |
168 | } | |
169 | len = pos - buf; | |
170 | } | |
171 | if (len >= sizeof_buf) | |
172 | error("generic_unit_encode - buffer overflow\n"); | |
173 | return len; | |
174 | } | |
175 | ||
176 | int | |
177 | generic_device_address_to_attach_address(device *me, | |
178 | const device_unit *address, | |
179 | int *attach_space, | |
180 | unsigned_word *attach_address, | |
181 | device *client) | |
182 | { | |
183 | int i; | |
184 | for (i = 0; i < address->nr_cells - 2; i++) { | |
185 | if (address->cells[i] != 0) | |
186 | device_error(me, "Only 32bit addresses supported"); | |
187 | } | |
188 | if (address->nr_cells >= 2) | |
189 | *attach_space = address->cells[address->nr_cells - 2]; | |
190 | else | |
191 | *attach_space = 0; | |
192 | *attach_address = address->cells[address->nr_cells - 1]; | |
193 | return 1; | |
194 | } | |
195 | ||
196 | int | |
197 | generic_device_size_to_attach_size(device *me, | |
198 | const device_unit *size, | |
199 | unsigned *nr_bytes, | |
200 | device *client) | |
201 | { | |
202 | int i; | |
203 | for (i = 0; i < size->nr_cells - 1; i++) { | |
204 | if (size->cells[i] != 0) | |
205 | device_error(me, "Only 32bit sizes supported"); | |
206 | } | |
207 | *nr_bytes = size->cells[0]; | |
208 | return *nr_bytes; | |
209 | } | |
210 | ||
211 | ||
212 | /* ignore/passthrough versions of each function */ | |
213 | ||
214 | void | |
215 | passthrough_device_address_attach(device *me, | |
216 | attach_type attach, | |
217 | int space, | |
218 | unsigned_word addr, | |
219 | unsigned nr_bytes, | |
220 | access_type access, | |
221 | device *client) /*callback/default*/ | |
222 | { | |
223 | device_attach_address(device_parent(me), attach, | |
224 | space, addr, nr_bytes, | |
225 | access, | |
226 | client); | |
227 | } | |
228 | ||
229 | void | |
230 | passthrough_device_address_detach(device *me, | |
231 | attach_type attach, | |
232 | int space, | |
233 | unsigned_word addr, | |
234 | unsigned nr_bytes, | |
235 | access_type access, | |
236 | device *client) /*callback/default*/ | |
237 | { | |
238 | device_detach_address(device_parent(me), attach, | |
239 | space, addr, nr_bytes, access, | |
240 | client); | |
241 | } | |
242 | ||
243 | unsigned | |
244 | passthrough_device_dma_read_buffer(device *me, | |
245 | void *dest, | |
246 | int space, | |
247 | unsigned_word addr, | |
248 | unsigned nr_bytes) | |
249 | { | |
250 | return device_dma_read_buffer(device_parent(me), dest, | |
251 | space, addr, nr_bytes); | |
252 | } | |
253 | ||
254 | unsigned | |
255 | passthrough_device_dma_write_buffer(device *me, | |
256 | const void *source, | |
257 | int space, | |
258 | unsigned_word addr, | |
259 | unsigned nr_bytes, | |
260 | int violate_read_only_section) | |
261 | { | |
262 | return device_dma_write_buffer(device_parent(me), source, | |
263 | space, addr, | |
264 | nr_bytes, | |
265 | violate_read_only_section); | |
266 | } | |
267 | ||
268 | int | |
269 | ignore_device_unit_decode(device *me, | |
270 | const char *unit, | |
271 | device_unit *phys) | |
272 | { | |
273 | memset(phys, 0, sizeof(device_unit)); | |
274 | return 0; | |
275 | } | |
276 | ||
277 | ||
278 | static const device_callbacks passthrough_callbacks = { | |
279 | { NULL, }, /* init */ | |
280 | { passthrough_device_address_attach, | |
281 | passthrough_device_address_detach, }, | |
282 | { NULL, }, /* IO */ | |
283 | { passthrough_device_dma_read_buffer, passthrough_device_dma_write_buffer, }, | |
284 | { NULL, }, /* interrupt */ | |
285 | { generic_device_unit_decode, | |
286 | generic_device_unit_encode, }, | |
287 | }; | |
288 | ||
289 | ||
290 | static const device_descriptor ob_device_table[] = { | |
291 | /* standard OpenBoot devices */ | |
292 | { "aliases", NULL, &passthrough_callbacks }, | |
293 | { "options", NULL, &passthrough_callbacks }, | |
294 | { "chosen", NULL, &passthrough_callbacks }, | |
295 | { "packages", NULL, &passthrough_callbacks }, | |
296 | { "cpus", NULL, &passthrough_callbacks }, | |
297 | { "openprom", NULL, &passthrough_callbacks }, | |
298 | { "init", NULL, &passthrough_callbacks }, | |
299 | { NULL }, | |
300 | }; | |
301 | ||
302 | const device_descriptor *const device_table[] = { | |
303 | ob_device_table, | |
304 | #include "hw.c" | |
305 | NULL, | |
306 | }; | |
307 | ||
308 | ||
309 | #endif /* _DEVICE_TABLE_C_ */ |