Rev 128 | Rev 195 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
1 | jermar | 1 | /* |
34 | jermar | 2 | * Copyright (C) 2001-2005 Jakub Jermar |
1 | jermar | 3 | * All rights reserved. |
4 | * |
||
5 | * Redistribution and use in source and binary forms, with or without |
||
6 | * modification, are permitted provided that the following conditions |
||
7 | * are met: |
||
8 | * |
||
9 | * - Redistributions of source code must retain the above copyright |
||
10 | * notice, this list of conditions and the following disclaimer. |
||
11 | * - Redistributions in binary form must reproduce the above copyright |
||
12 | * notice, this list of conditions and the following disclaimer in the |
||
13 | * documentation and/or other materials provided with the distribution. |
||
14 | * - The name of the author may not be used to endorse or promote products |
||
15 | * derived from this software without specific prior written permission. |
||
16 | * |
||
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
||
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
||
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
||
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
27 | */ |
||
28 | |||
29 | #ifdef __SMP__ |
||
30 | |||
31 | #include <config.h> |
||
32 | #include <print.h> |
||
128 | jermar | 33 | #include <debug.h> |
34 | jermar | 34 | #include <arch/smp/mps.h> |
11 | jermar | 35 | #include <arch/smp/apic.h> |
128 | jermar | 36 | #include <arch/smp/smp.h> |
1 | jermar | 37 | #include <func.h> |
38 | #include <arch/types.h> |
||
39 | #include <typedefs.h> |
||
40 | #include <cpu.h> |
||
41 | #include <arch/asm.h> |
||
30 | jermar | 42 | #include <arch/bios/bios.h> |
1 | jermar | 43 | |
44 | /* |
||
34 | jermar | 45 | * MultiProcessor Specification detection code. |
1 | jermar | 46 | */ |
47 | |||
48 | #define FS_SIGNATURE 0x5f504d5f |
||
49 | #define CT_SIGNATURE 0x504d4350 |
||
50 | |||
34 | jermar | 51 | int mps_fs_check(__u8 *base); |
52 | int mps_ct_check(void); |
||
1 | jermar | 53 | |
54 | int configure_via_ct(void); |
||
55 | int configure_via_default(__u8 n); |
||
56 | |||
57 | int ct_processor_entry(struct __processor_entry *pr); |
||
58 | void ct_bus_entry(struct __bus_entry *bus); |
||
59 | void ct_io_apic_entry(struct __io_apic_entry *ioa); |
||
60 | void ct_io_intr_entry(struct __io_intr_entry *iointr); |
||
61 | void ct_l_intr_entry(struct __l_intr_entry *lintr); |
||
62 | |||
63 | void ct_extended_entries(void); |
||
64 | |||
34 | jermar | 65 | static struct mps_fs *fs; |
66 | static struct mps_ct *ct; |
||
1 | jermar | 67 | |
68 | struct __processor_entry *processor_entries = NULL; |
||
69 | struct __bus_entry *bus_entries = NULL; |
||
70 | struct __io_apic_entry *io_apic_entries = NULL; |
||
71 | struct __io_intr_entry *io_intr_entries = NULL; |
||
72 | struct __l_intr_entry *l_intr_entries = NULL; |
||
73 | |||
74 | int processor_entry_cnt = 0; |
||
75 | int bus_entry_cnt = 0; |
||
76 | int io_apic_entry_cnt = 0; |
||
77 | int io_intr_entry_cnt = 0; |
||
78 | int l_intr_entry_cnt = 0; |
||
79 | |||
80 | waitq_t ap_completion_wq; |
||
81 | waitq_t kmp_completion_wq; |
||
82 | |||
128 | jermar | 83 | |
1 | jermar | 84 | /* |
128 | jermar | 85 | * Implementation of IA-32 SMP configuration interface. |
86 | */ |
||
87 | static count_t get_cpu_count(void); |
||
88 | static bool is_cpu_enabled(index_t i); |
||
89 | static bool is_bsp(index_t i); |
||
90 | static __u8 get_cpu_apic_id(index_t i); |
||
91 | |||
92 | struct smp_config_operations mps_config_operations = { |
||
93 | .cpu_count = get_cpu_count, |
||
94 | .cpu_enabled = is_cpu_enabled, |
||
95 | .cpu_bootstrap = is_bsp, |
||
96 | .cpu_apic_id = get_cpu_apic_id |
||
97 | }; |
||
98 | |||
99 | count_t get_cpu_count(void) |
||
100 | { |
||
101 | return processor_entry_cnt; |
||
102 | } |
||
103 | |||
104 | bool is_cpu_enabled(index_t i) |
||
105 | { |
||
106 | ASSERT(i < processor_entry_cnt); |
||
107 | return processor_entries[i].cpu_flags & 0x1; |
||
108 | } |
||
109 | |||
110 | bool is_bsp(index_t i) |
||
111 | { |
||
112 | ASSERT(i < processor_entry_cnt); |
||
113 | return processor_entries[i].cpu_flags & 0x2; |
||
114 | } |
||
115 | |||
116 | __u8 get_cpu_apic_id(index_t i) |
||
117 | { |
||
118 | ASSERT(i < processor_entry_cnt); |
||
119 | return processor_entries[i].l_apic_id; |
||
120 | } |
||
121 | |||
122 | |||
123 | /* |
||
1 | jermar | 124 | * Used to check the integrity of the MP Floating Structure. |
125 | */ |
||
34 | jermar | 126 | int mps_fs_check(__u8 *base) |
1 | jermar | 127 | { |
128 | int i; |
||
129 | __u8 sum; |
||
130 | |||
131 | for (i = 0, sum = 0; i < 16; i++) |
||
132 | sum += base[i]; |
||
133 | |||
134 | return !sum; |
||
135 | } |
||
136 | |||
137 | /* |
||
138 | * Used to check the integrity of the MP Configuration Table. |
||
139 | */ |
||
34 | jermar | 140 | int mps_ct_check(void) |
1 | jermar | 141 | { |
142 | __u8 *base = (__u8 *) ct; |
||
143 | __u8 *ext = base + ct->base_table_length; |
||
144 | __u8 sum; |
||
145 | int i; |
||
146 | |||
147 | /* count the checksum for the base table */ |
||
148 | for (i=0,sum=0; i < ct->base_table_length; i++) |
||
149 | sum += base[i]; |
||
150 | |||
151 | if (sum) |
||
152 | return 0; |
||
153 | |||
154 | /* count the checksum for the extended table */ |
||
155 | for (i=0,sum=0; i < ct->ext_table_length; i++) |
||
156 | sum += ext[i]; |
||
157 | |||
12 | jermar | 158 | return sum == ct->ext_table_checksum; |
1 | jermar | 159 | } |
160 | |||
34 | jermar | 161 | void mps_init(void) |
1 | jermar | 162 | { |
32 | jermar | 163 | __u8 *addr[2] = { NULL, (__u8 *) 0xf0000 }; |
164 | int i, j, length[2] = { 1024, 64*1024 }; |
||
1 | jermar | 165 | |
166 | |||
167 | /* |
||
32 | jermar | 168 | * Find MP Floating Pointer Structure |
169 | * 1a. search first 1K of EBDA |
||
170 | * 1b. if EBDA is undefined, search last 1K of base memory |
||
171 | * 2. search 64K starting at 0xf0000 |
||
1 | jermar | 172 | */ |
32 | jermar | 173 | |
174 | addr[0] = (__u8 *) (ebda ? ebda : 639 * 1024); |
||
175 | for (i = 0; i < 2; i++) { |
||
176 | for (j = 0; j < length[i]; j += 16) { |
||
34 | jermar | 177 | if (*((__u32 *) &addr[i][j]) == FS_SIGNATURE && mps_fs_check(&addr[i][j])) { |
178 | fs = (struct mps_fs *) &addr[i][j]; |
||
1 | jermar | 179 | goto fs_found; |
32 | jermar | 180 | } |
1 | jermar | 181 | } |
182 | } |
||
183 | |||
184 | return; |
||
185 | |||
186 | fs_found: |
||
34 | jermar | 187 | printf("%L: MPS Floating Pointer Structure\n", fs); |
1 | jermar | 188 | |
189 | frame_not_free((__address) fs); |
||
32 | jermar | 190 | |
1 | jermar | 191 | if (fs->config_type == 0 && fs->configuration_table) { |
192 | if (fs->mpfib2 >> 7) { |
||
110 | jermar | 193 | printf("%s: PIC mode not supported\n", __FUNCTION__); |
1 | jermar | 194 | return; |
195 | } |
||
196 | |||
197 | ct = fs->configuration_table; |
||
198 | frame_not_free((__address) ct); |
||
199 | config.cpu_count = configure_via_ct(); |
||
200 | } |
||
201 | else |
||
202 | config.cpu_count = configure_via_default(fs->config_type); |
||
203 | |||
204 | return; |
||
205 | } |
||
206 | |||
207 | int configure_via_ct(void) |
||
208 | { |
||
209 | __u8 *cur; |
||
210 | int i, cnt; |
||
211 | |||
212 | if (ct->signature != CT_SIGNATURE) { |
||
110 | jermar | 213 | printf("%s: bad ct->signature\n", __FUNCTION__); |
1 | jermar | 214 | return 1; |
215 | } |
||
34 | jermar | 216 | if (!mps_ct_check()) { |
110 | jermar | 217 | printf("%s: bad ct checksum\n", __FUNCTION__); |
1 | jermar | 218 | return 1; |
219 | } |
||
220 | if (ct->oem_table) { |
||
110 | jermar | 221 | printf("%s: ct->oem_table not supported\n", __FUNCTION__); |
1 | jermar | 222 | return 1; |
223 | } |
||
224 | |||
225 | l_apic = ct->l_apic; |
||
226 | |||
227 | cnt = 0; |
||
228 | cur = &ct->base_table[0]; |
||
229 | for (i=0; i < ct->entry_count; i++) { |
||
230 | switch (*cur) { |
||
231 | /* Processor entry */ |
||
232 | case 0: |
||
233 | processor_entries = processor_entries ? processor_entries : (struct __processor_entry *) cur; |
||
234 | processor_entry_cnt++; |
||
235 | cnt += ct_processor_entry((struct __processor_entry *) cur); |
||
236 | cur += 20; |
||
237 | break; |
||
238 | |||
239 | /* Bus entry */ |
||
240 | case 1: |
||
241 | bus_entries = bus_entries ? bus_entries : (struct __bus_entry *) cur; |
||
242 | bus_entry_cnt++; |
||
243 | ct_bus_entry((struct __bus_entry *) cur); |
||
244 | cur += 8; |
||
245 | break; |
||
246 | |||
247 | /* I/O Apic */ |
||
248 | case 2: |
||
249 | io_apic_entries = io_apic_entries ? io_apic_entries : (struct __io_apic_entry *) cur; |
||
250 | io_apic_entry_cnt++; |
||
251 | ct_io_apic_entry((struct __io_apic_entry *) cur); |
||
252 | cur += 8; |
||
253 | break; |
||
254 | |||
255 | /* I/O Interrupt Assignment */ |
||
256 | case 3: |
||
257 | io_intr_entries = io_intr_entries ? io_intr_entries : (struct __io_intr_entry *) cur; |
||
258 | io_intr_entry_cnt++; |
||
259 | ct_io_intr_entry((struct __io_intr_entry *) cur); |
||
260 | cur += 8; |
||
261 | break; |
||
262 | |||
263 | /* Local Interrupt Assignment */ |
||
264 | case 4: |
||
265 | l_intr_entries = l_intr_entries ? l_intr_entries : (struct __l_intr_entry *) cur; |
||
266 | l_intr_entry_cnt++; |
||
267 | ct_l_intr_entry((struct __l_intr_entry *) cur); |
||
125 | jermar | 268 | cur += 8; |
1 | jermar | 269 | break; |
125 | jermar | 270 | |
1 | jermar | 271 | default: |
272 | /* |
||
273 | * Something is wrong. Fallback to UP mode. |
||
274 | */ |
||
275 | |||
110 | jermar | 276 | printf("%s: ct badness\n", __FUNCTION__); |
1 | jermar | 277 | return 1; |
278 | } |
||
279 | } |
||
280 | |||
281 | /* |
||
282 | * Process extended entries. |
||
283 | */ |
||
284 | ct_extended_entries(); |
||
285 | return cnt; |
||
286 | } |
||
287 | |||
288 | int configure_via_default(__u8 n) |
||
289 | { |
||
290 | /* |
||
291 | * Not yet implemented. |
||
292 | */ |
||
110 | jermar | 293 | printf("%s: not supported\n", __FUNCTION__); |
1 | jermar | 294 | return 1; |
295 | } |
||
296 | |||
297 | |||
298 | int ct_processor_entry(struct __processor_entry *pr) |
||
299 | { |
||
300 | /* |
||
301 | * Ignore processors which are not marked enabled. |
||
302 | */ |
||
303 | if ((pr->cpu_flags & (1<<0)) == 0) |
||
304 | return 0; |
||
305 | |||
306 | apic_id_mask |= (1<<pr->l_apic_id); |
||
307 | return 1; |
||
308 | } |
||
309 | |||
310 | void ct_bus_entry(struct __bus_entry *bus) |
||
311 | { |
||
34 | jermar | 312 | #ifdef MPSCT_VERBOSE |
1 | jermar | 313 | char buf[7]; |
72 | decky | 314 | memcopy((__address) bus->bus_type, (__address) buf, 6); |
1 | jermar | 315 | buf[6] = 0; |
316 | printf("bus%d: %s\n", bus->bus_id, buf); |
||
317 | #endif |
||
318 | } |
||
319 | |||
320 | void ct_io_apic_entry(struct __io_apic_entry *ioa) |
||
321 | { |
||
322 | static int io_apic_count = 0; |
||
323 | |||
324 | /* this ioapic is marked unusable */ |
||
325 | if (ioa->io_apic_flags & 1 == 0) |
||
326 | return; |
||
327 | |||
328 | if (io_apic_count++ > 0) { |
||
329 | /* |
||
330 | * Multiple IO APIC's are currently not supported. |
||
331 | */ |
||
332 | return; |
||
333 | } |
||
334 | |||
335 | io_apic = ioa->io_apic; |
||
336 | } |
||
337 | |||
34 | jermar | 338 | //#define MPSCT_VERBOSE |
1 | jermar | 339 | void ct_io_intr_entry(struct __io_intr_entry *iointr) |
340 | { |
||
34 | jermar | 341 | #ifdef MPSCT_VERBOSE |
1 | jermar | 342 | switch (iointr->intr_type) { |
343 | case 0: printf("INT"); break; |
||
344 | case 1: printf("NMI"); break; |
||
345 | case 2: printf("SMI"); break; |
||
346 | case 3: printf("ExtINT"); break; |
||
347 | } |
||
348 | putchar(','); |
||
349 | switch (iointr->poel&3) { |
||
350 | case 0: printf("bus-like"); break; |
||
351 | case 1: printf("active high"); break; |
||
352 | case 2: printf("reserved"); break; |
||
353 | case 3: printf("active low"); break; |
||
354 | } |
||
355 | putchar(','); |
||
356 | switch ((iointr->poel>>2)&3) { |
||
357 | case 0: printf("bus-like"); break; |
||
358 | case 1: printf("edge-triggered"); break; |
||
359 | case 2: printf("reserved"); break; |
||
360 | case 3: printf("level-triggered"); break; |
||
361 | } |
||
362 | putchar(','); |
||
363 | printf("bus%d,irq%d", iointr->src_bus_id, iointr->src_bus_irq); |
||
364 | putchar(','); |
||
365 | printf("io_apic%d,pin%d", iointr->dst_io_apic_id, iointr->dst_io_apic_pin); |
||
366 | putchar('\n'); |
||
367 | #endif |
||
368 | } |
||
369 | |||
370 | void ct_l_intr_entry(struct __l_intr_entry *lintr) |
||
371 | { |
||
34 | jermar | 372 | #ifdef MPSCT_VERBOSE |
1 | jermar | 373 | switch (lintr->intr_type) { |
374 | case 0: printf("INT"); break; |
||
375 | case 1: printf("NMI"); break; |
||
376 | case 2: printf("SMI"); break; |
||
377 | case 3: printf("ExtINT"); break; |
||
378 | } |
||
379 | putchar(','); |
||
380 | switch (lintr->poel&3) { |
||
381 | case 0: printf("bus-like"); break; |
||
382 | case 1: printf("active high"); break; |
||
383 | case 2: printf("reserved"); break; |
||
384 | case 3: printf("active low"); break; |
||
385 | } |
||
386 | putchar(','); |
||
387 | switch ((lintr->poel>>2)&3) { |
||
388 | case 0: printf("bus-like"); break; |
||
389 | case 1: printf("edge-triggered"); break; |
||
390 | case 2: printf("reserved"); break; |
||
391 | case 3: printf("level-triggered"); break; |
||
392 | } |
||
393 | putchar(','); |
||
394 | printf("bus%d,irq%d", lintr->src_bus_id, lintr->src_bus_irq); |
||
395 | putchar(','); |
||
396 | printf("l_apic%d,pin%d", lintr->dst_l_apic_id, lintr->dst_l_apic_pin); |
||
397 | putchar('\n'); |
||
398 | #endif |
||
399 | } |
||
400 | |||
401 | void ct_extended_entries(void) |
||
402 | { |
||
13 | jermar | 403 | __u8 *ext = (__u8 *) ct + ct->base_table_length; |
404 | __u8 *cur; |
||
405 | |||
406 | for (cur = ext; cur < ext + ct->ext_table_length; cur += cur[CT_EXT_ENTRY_LEN]) { |
||
407 | switch (cur[CT_EXT_ENTRY_TYPE]) { |
||
408 | default: |
||
33 | jermar | 409 | printf("%L: skipping MP Configuration Table extended entry type %d\n", cur, cur[CT_EXT_ENTRY_TYPE]); |
13 | jermar | 410 | break; |
411 | } |
||
412 | } |
||
1 | jermar | 413 | } |
414 | |||
34 | jermar | 415 | int mps_irq_to_pin(int irq) |
1 | jermar | 416 | { |
417 | int i; |
||
418 | |||
419 | for(i=0;i<io_intr_entry_cnt;i++) { |
||
420 | if (io_intr_entries[i].src_bus_irq == irq && io_intr_entries[i].intr_type == 0) |
||
421 | return io_intr_entries[i].dst_io_apic_pin; |
||
422 | } |
||
423 | |||
424 | return -1; |
||
425 | } |
||
426 | |||
427 | #endif /* __SMP__ */ |