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path: root/drivers/bcma/scan.c
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-rw-r--r--drivers/bcma/scan.c230
1 files changed, 118 insertions, 112 deletions
diff --git a/drivers/bcma/scan.c b/drivers/bcma/scan.c
index 40d7dcce8933..4012d8d93e91 100644
--- a/drivers/bcma/scan.c
+++ b/drivers/bcma/scan.c
@@ -200,16 +200,124 @@ static s32 bcma_erom_get_addr_desc(struct bcma_bus *bus, u32 **eromptr,
200 return addrl; 200 return addrl;
201} 201}
202 202
203static int bcma_get_next_core(struct bcma_bus *bus, u32 __iomem **eromptr,
204 struct bcma_device *core)
205{
206 s32 tmp;
207 u8 i, j;
208 s32 cia, cib;
209 u8 ports[2], wrappers[2];
210
211 /* get CIs */
212 cia = bcma_erom_get_ci(bus, eromptr);
213 if (cia < 0) {
214 bcma_erom_push_ent(eromptr);
215 if (bcma_erom_is_end(bus, eromptr))
216 return -ESPIPE;
217 return -EILSEQ;
218 }
219 cib = bcma_erom_get_ci(bus, eromptr);
220 if (cib < 0)
221 return -EILSEQ;
222
223 /* parse CIs */
224 core->id.class = (cia & SCAN_CIA_CLASS) >> SCAN_CIA_CLASS_SHIFT;
225 core->id.id = (cia & SCAN_CIA_ID) >> SCAN_CIA_ID_SHIFT;
226 core->id.manuf = (cia & SCAN_CIA_MANUF) >> SCAN_CIA_MANUF_SHIFT;
227 ports[0] = (cib & SCAN_CIB_NMP) >> SCAN_CIB_NMP_SHIFT;
228 ports[1] = (cib & SCAN_CIB_NSP) >> SCAN_CIB_NSP_SHIFT;
229 wrappers[0] = (cib & SCAN_CIB_NMW) >> SCAN_CIB_NMW_SHIFT;
230 wrappers[1] = (cib & SCAN_CIB_NSW) >> SCAN_CIB_NSW_SHIFT;
231 core->id.rev = (cib & SCAN_CIB_REV) >> SCAN_CIB_REV_SHIFT;
232
233 if (((core->id.manuf == BCMA_MANUF_ARM) &&
234 (core->id.id == 0xFFF)) ||
235 (ports[1] == 0)) {
236 bcma_erom_skip_component(bus, eromptr);
237 return -ENXIO;
238 }
239
240 /* check if component is a core at all */
241 if (wrappers[0] + wrappers[1] == 0) {
242 /* we could save addrl of the router
243 if (cid == BCMA_CORE_OOB_ROUTER)
244 */
245 bcma_erom_skip_component(bus, eromptr);
246 return -ENXIO;
247 }
248
249 if (bcma_erom_is_bridge(bus, eromptr)) {
250 bcma_erom_skip_component(bus, eromptr);
251 return -ENXIO;
252 }
253
254 /* get & parse master ports */
255 for (i = 0; i < ports[0]; i++) {
256 u32 mst_port_d = bcma_erom_get_mst_port(bus, eromptr);
257 if (mst_port_d < 0)
258 return -EILSEQ;
259 }
260
261 /* get & parse slave ports */
262 for (i = 0; i < ports[1]; i++) {
263 for (j = 0; ; j++) {
264 tmp = bcma_erom_get_addr_desc(bus, eromptr,
265 SCAN_ADDR_TYPE_SLAVE, i);
266 if (tmp < 0) {
267 /* no more entries for port _i_ */
268 /* pr_debug("erom: slave port %d "
269 * "has %d descriptors\n", i, j); */
270 break;
271 } else {
272 if (i == 0 && j == 0)
273 core->addr = tmp;
274 }
275 }
276 }
277
278 /* get & parse master wrappers */
279 for (i = 0; i < wrappers[0]; i++) {
280 for (j = 0; ; j++) {
281 tmp = bcma_erom_get_addr_desc(bus, eromptr,
282 SCAN_ADDR_TYPE_MWRAP, i);
283 if (tmp < 0) {
284 /* no more entries for port _i_ */
285 /* pr_debug("erom: master wrapper %d "
286 * "has %d descriptors\n", i, j); */
287 break;
288 } else {
289 if (i == 0 && j == 0)
290 core->wrap = tmp;
291 }
292 }
293 }
294
295 /* get & parse slave wrappers */
296 for (i = 0; i < wrappers[1]; i++) {
297 u8 hack = (ports[1] == 1) ? 0 : 1;
298 for (j = 0; ; j++) {
299 tmp = bcma_erom_get_addr_desc(bus, eromptr,
300 SCAN_ADDR_TYPE_SWRAP, i + hack);
301 if (tmp < 0) {
302 /* no more entries for port _i_ */
303 /* pr_debug("erom: master wrapper %d "
304 * has %d descriptors\n", i, j); */
305 break;
306 } else {
307 if (wrappers[0] == 0 && !i && !j)
308 core->wrap = tmp;
309 }
310 }
311 }
312 return 0;
313}
314
203int bcma_bus_scan(struct bcma_bus *bus) 315int bcma_bus_scan(struct bcma_bus *bus)
204{ 316{
205 u32 erombase; 317 u32 erombase;
206 u32 __iomem *eromptr, *eromend; 318 u32 __iomem *eromptr, *eromend;
207 319
208 s32 cia, cib;
209 u8 ports[2], wrappers[2];
210
211 s32 tmp; 320 s32 tmp;
212 u8 i, j;
213 321
214 int err; 322 int err;
215 323
@@ -236,112 +344,13 @@ int bcma_bus_scan(struct bcma_bus *bus)
236 INIT_LIST_HEAD(&core->list); 344 INIT_LIST_HEAD(&core->list);
237 core->bus = bus; 345 core->bus = bus;
238 346
239 /* get CIs */ 347 err = bcma_get_next_core(bus, &eromptr, core);
240 cia = bcma_erom_get_ci(bus, &eromptr); 348 if (err == -ENXIO)
241 if (cia < 0) {
242 bcma_erom_push_ent(&eromptr);
243 if (bcma_erom_is_end(bus, &eromptr))
244 break;
245 err= -EILSEQ;
246 goto out;
247 }
248 cib = bcma_erom_get_ci(bus, &eromptr);
249 if (cib < 0) {
250 err= -EILSEQ;
251 goto out;
252 }
253
254 /* parse CIs */
255 core->id.class = (cia & SCAN_CIA_CLASS) >> SCAN_CIA_CLASS_SHIFT;
256 core->id.id = (cia & SCAN_CIA_ID) >> SCAN_CIA_ID_SHIFT;
257 core->id.manuf = (cia & SCAN_CIA_MANUF) >> SCAN_CIA_MANUF_SHIFT;
258 ports[0] = (cib & SCAN_CIB_NMP) >> SCAN_CIB_NMP_SHIFT;
259 ports[1] = (cib & SCAN_CIB_NSP) >> SCAN_CIB_NSP_SHIFT;
260 wrappers[0] = (cib & SCAN_CIB_NMW) >> SCAN_CIB_NMW_SHIFT;
261 wrappers[1] = (cib & SCAN_CIB_NSW) >> SCAN_CIB_NSW_SHIFT;
262 core->id.rev = (cib & SCAN_CIB_REV) >> SCAN_CIB_REV_SHIFT;
263
264 if (((core->id.manuf == BCMA_MANUF_ARM) &&
265 (core->id.id == 0xFFF)) ||
266 (ports[1] == 0)) {
267 bcma_erom_skip_component(bus, &eromptr);
268 continue;
269 }
270
271 /* check if component is a core at all */
272 if (wrappers[0] + wrappers[1] == 0) {
273 /* we could save addrl of the router
274 if (cid == BCMA_CORE_OOB_ROUTER)
275 */
276 bcma_erom_skip_component(bus, &eromptr);
277 continue;
278 }
279
280 if (bcma_erom_is_bridge(bus, &eromptr)) {
281 bcma_erom_skip_component(bus, &eromptr);
282 continue; 349 continue;
283 } 350 else if (err == -ESPIPE)
284 351 break;
285 /* get & parse master ports */ 352 else if (err < 0)
286 for (i = 0; i < ports[0]; i++) { 353 return err;
287 u32 mst_port_d = bcma_erom_get_mst_port(bus, &eromptr);
288 if (mst_port_d < 0) {
289 err= -EILSEQ;
290 goto out;
291 }
292 }
293
294 /* get & parse slave ports */
295 for (i = 0; i < ports[1]; i++) {
296 for (j = 0; ; j++) {
297 tmp = bcma_erom_get_addr_desc(bus, &eromptr,
298 SCAN_ADDR_TYPE_SLAVE, i);
299 if (tmp < 0) {
300 /* no more entries for port _i_ */
301 /* pr_debug("erom: slave port %d "
302 * "has %d descriptors\n", i, j); */
303 break;
304 } else {
305 if (i == 0 && j == 0)
306 core->addr = tmp;
307 }
308 }
309 }
310
311 /* get & parse master wrappers */
312 for (i = 0; i < wrappers[0]; i++) {
313 for (j = 0; ; j++) {
314 tmp = bcma_erom_get_addr_desc(bus, &eromptr,
315 SCAN_ADDR_TYPE_MWRAP, i);
316 if (tmp < 0) {
317 /* no more entries for port _i_ */
318 /* pr_debug("erom: master wrapper %d "
319 * "has %d descriptors\n", i, j); */
320 break;
321 } else {
322 if (i == 0 && j == 0)
323 core->wrap = tmp;
324 }
325 }
326 }
327
328 /* get & parse slave wrappers */
329 for (i = 0; i < wrappers[1]; i++) {
330 u8 hack = (ports[1] == 1) ? 0 : 1;
331 for (j = 0; ; j++) {
332 tmp = bcma_erom_get_addr_desc(bus, &eromptr,
333 SCAN_ADDR_TYPE_SWRAP, i + hack);
334 if (tmp < 0) {
335 /* no more entries for port _i_ */
336 /* pr_debug("erom: master wrapper %d "
337 * has %d descriptors\n", i, j); */
338 break;
339 } else {
340 if (wrappers[0] == 0 && !i && !j)
341 core->wrap = tmp;
342 }
343 }
344 }
345 354
346 pr_info("Core %d found: %s " 355 pr_info("Core %d found: %s "
347 "(manuf 0x%03X, id 0x%03X, rev 0x%02X, class 0x%X)\n", 356 "(manuf 0x%03X, id 0x%03X, rev 0x%02X, class 0x%X)\n",
@@ -351,9 +360,6 @@ int bcma_bus_scan(struct bcma_bus *bus)
351 360
352 core->core_index = bus->nr_cores++; 361 core->core_index = bus->nr_cores++;
353 list_add(&core->list, &bus->cores); 362 list_add(&core->list, &bus->cores);
354 continue;
355out:
356 return err;
357 } 363 }
358 364
359 return 0; 365 return 0;
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-11 13:15:43 -0500