Commit | Line | Data |
---|---|---|
920dae64 AT |
1 | // ========== Copyright Header Begin ========================================== |
2 | // | |
3 | // OpenSPARC T2 Processor File: sam_piu.cc | |
4 | // Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved. | |
5 | // DO NOT ALTER OR REMOVE COPYRIGHT NOTICES. | |
6 | // | |
7 | // The above named program is free software; you can redistribute it and/or | |
8 | // modify it under the terms of the GNU General Public | |
9 | // License version 2 as published by the Free Software Foundation. | |
10 | // | |
11 | // The above named program is distributed in the hope that it will be | |
12 | // useful, but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | // General Public License for more details. | |
15 | // | |
16 | // You should have received a copy of the GNU General Public | |
17 | // License along with this work; if not, write to the Free Software | |
18 | // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. | |
19 | // | |
20 | // ========== Copyright Header End ============================================ | |
21 | #include "sam_piu.h" | |
22 | #include "dev_registry.h" | |
23 | ||
24 | extern devRegistry * samDevs; | |
25 | ||
26 | static const char *n2piu_help = "SAM N2 NCU module\n\ | |
27 | Sysconf format is :\n\ | |
28 | sysconf n2_piu <instance_name> ncu=<ncu name>\n\ | |
29 | For UI help type <instance name>\n\ | |
30 | For module specific info type \"modinfo <instance name>\""; | |
31 | ||
32 | ||
33 | static int access_piu(uint32_t cpuid, void* obj, uint64_t paddr, mmi_bool_t wr, \ | |
34 | uint32_t size, uint64_t* buf, uint8_t bytemask){ | |
35 | samPiu * sp = (samPiu *)obj; | |
36 | return sp->handlePio(cpuid,paddr,wr,size,buf,bytemask); | |
37 | } | |
38 | ||
39 | int n2piu_ui_cmd(void * obj, int argc, char * argv[]){ | |
40 | samPiu * i = (samPiu *)obj; | |
41 | i->handle_ui(argc, argv); | |
42 | return 0; | |
43 | } | |
44 | ||
45 | ||
46 | Module * Module::create(const char *_modname, const char *_instance_name){ | |
47 | return new samPiu(_modname, _instance_name); | |
48 | } | |
49 | ||
50 | samPiu::samPiu(const char *_modname, const char *_instance_name) | |
51 | : Module(_modname, _instance_name){ | |
52 | ||
53 | piuModel.proc_type_namep = strdup("n2"); | |
54 | piuModel.config_devp = 0; | |
55 | piuModel.config_procp = 0; | |
56 | piuModel.sam_piu = (void*)this; | |
57 | /* | |
58 | * init PIU CSR with power on reset | |
59 | */ | |
60 | piu_init_csr(&piuModel); | |
61 | ||
62 | /* | |
63 | * init error lookup table | |
64 | */ | |
65 | piu_init_error_list(); | |
66 | ||
67 | primary_bus_no = 0; | |
68 | secondary_bus_no = 0; | |
69 | subordinate_bus_no = 0xff; | |
70 | device = 0; | |
71 | function = 0; | |
72 | bus = ncu = 0; | |
73 | busMod = ncuMod = 0; | |
74 | busIf = 0; | |
75 | ncuIf = 0; | |
76 | ||
77 | N2_PIU_VERSION = strdup("1.0"); | |
78 | ||
79 | for(int i = 0; i < 64; i++) | |
80 | pendingIntr[i] = false; | |
81 | assert(pthread_mutex_init(&intxMutex,NULL)==0); | |
82 | assert(pthread_mutex_init(&pendIntMutex,NULL)==0); | |
83 | assert(pthread_mutex_init(&piuMutex,NULL)==0); | |
84 | for (int i = 0; i< 32; i++) | |
85 | assert(pthread_mutex_init(&msiMutex[i],NULL)==0); | |
86 | ||
87 | mmi_register_instance_cmd(getInstance(),n2piu_help,n2piu_ui_cmd); | |
88 | ||
89 | assert(pthread_mutex_init(&ncuMutex,NULL)==0); | |
90 | event_fire_time = 0; | |
91 | } | |
92 | ||
93 | const char * Module::get_help_string(){ | |
94 | return n2piu_help; | |
95 | } | |
96 | ||
97 | const char * samPiu::get_help(){ | |
98 | return Module::get_help_string(); | |
99 | } | |
100 | ||
101 | const char * samPiu::get_version(){ | |
102 | return N2_PIU_VERSION; | |
103 | } | |
104 | void samPiu::modinfo(){ | |
105 | printf("SAM-Legion PIU module\n"); | |
106 | printf("IOMAP a) base<%llx> size<%llx>\n",PIU_CSR_BASE,PIU_CSR_SIZE); | |
107 | printf(" b) base<%llx> size<%llx>\n",PIU_PCIE_BASE,PIU_PCIE_SIZE); | |
108 | printf("pri_bus <%d>, sec_bus<%d>, device<%d>, function<%d>\n",\ | |
109 | primary_bus_no, secondary_bus_no, device, function ); | |
110 | return; | |
111 | } | |
112 | ||
113 | bool samPiu::parse_arg(const char *arg){ | |
114 | if (argval("bus", arg, &bus)){ | |
115 | debug_more("%s: bus = %s\n", instance_name, bus); | |
116 | return true; | |
117 | }else if (argval("ncu", arg, &ncu)){ | |
118 | debug_more("%s: ncu = %s\n", instance_name, ncu); | |
119 | return true; | |
120 | } | |
121 | return false; | |
122 | } | |
123 | ||
124 | bool samPiu::check_args(){ | |
125 | if(bus == 0){ | |
126 | debug_err("%s: ERROR: must specify downstream pcie bus name\n",getName()); | |
127 | return false; | |
128 | } | |
129 | return true; | |
130 | } | |
131 | ||
132 | ||
133 | void samPiu::module_added(mmi_instance_t i, const char *target_name){ | |
134 | if(bus && !strcmp(target_name,bus)){ | |
135 | busMod = i; | |
136 | busIf = (pcieBusIf*)mmi_get_interface(i,PCIE_BUS_INTERFACE); | |
137 | if(busIf == 0){ | |
138 | debug_err("%s: FATAL ERROR, could not get bus interface for %s\n",getName,bus); | |
139 | exit(0); | |
140 | } | |
141 | busIf->setBridgeIf((genericPcieDevIf*)this); | |
142 | }else if(ncu && !strcmp(ncu,target_name)){ | |
143 | ncuMod = i; | |
144 | ncuIf = (n2Ncu*)mmi_get_interface(i,"ncu interface"); | |
145 | if(!ncuIf){ | |
146 | debug_err("%s: FATAL ERROR, could not get ncu interface for %s\n",getName,ncu); | |
147 | exit(0); | |
148 | } | |
149 | } | |
150 | return; | |
151 | } | |
152 | ||
153 | void samPiu::module_deleted(mmi_instance_t i, const char *target_name){ | |
154 | if(bus && !strcmp(bus,target_name)){ | |
155 | busMod = 0; | |
156 | busIf = 0; | |
157 | bus = 0; | |
158 | } | |
159 | return; | |
160 | } | |
161 | ||
162 | void *samPiu::get_interface(const char *name){ | |
163 | // no one should be calling this interface, since the bus's bridge interface | |
164 | // is set by the bridge itself (for PIU in module_added) | |
165 | if( !strcmp(name,GENERIC_PCIE_DEV_INTERFACE) ) | |
166 | return (genericPcieDevIf*)this; | |
167 | return 0; | |
168 | } | |
169 | ||
170 | ||
171 | void samPiu::init_done(){ | |
172 | mmi_map_physio(PIU_CSR_BASE,PIU_CSR_SIZE,(void*)this,access_piu); | |
173 | mmi_map_physio(PIU_PCIE_BASE,PIU_PCIE_SIZE,(void*)this,access_piu); | |
174 | ||
175 | if(!restore_v5_dump()){ | |
176 | mmi_register_event(1000,samPiu_1ms_callback,(void*)this,0); | |
177 | event_fire_time = 1000; | |
178 | } | |
179 | return; | |
180 | } | |
181 | ||
182 | void samPiu::timer_callback(){ | |
183 | // register a callback that fires every 10ms. Looks for any nacked | |
184 | // interrupt by NCU and sends it if one exists. If the interrupt is | |
185 | // nacked again, try it again later. | |
186 | ||
187 | ||
188 | pthread_mutex_lock(&ncuMutex); | |
189 | ||
190 | if(!irql.empty()){ | |
191 | VCPU_InterruptRequest * ir = irql.front(); | |
192 | int stat = ncuIf->sendPiuMondo(ir); | |
193 | ||
194 | if(stat == -1){ | |
195 | // don't really expect this to happen, but if it does, just try again | |
196 | debug_more("%s:interrupt nacked by NCU after 1ms delay !!\n",getName()); | |
197 | goto out; | |
198 | } | |
199 | debug_more("%s 1ms cb: sent interrupt to itid %d\n",getName(),irql.front()->itid); | |
200 | // remove the irq and delete it since the interrupt has been sent | |
201 | irql.pop_front(); | |
202 | delete ir; | |
203 | } | |
204 | out: | |
205 | event_fire_time = mmi_get_time()+1000; | |
206 | mmi_register_event(event_fire_time,samPiu_1ms_callback,(void*)this,0); | |
207 | ||
208 | pthread_mutex_unlock(&ncuMutex); | |
209 | } | |
210 | ||
211 | void samPiu_1ms_callback(void * obj, void * ){ | |
212 | samPiu * t = (samPiu*) obj; | |
213 | t->timer_callback(); | |
214 | } | |
215 | ||
216 | pcieCompleter samPiu::devif_memAccess(bool wr, uint64_t addr, addrMd_xactnType mode,\ | |
217 | void * data, uint16_t length, uint8_t be, uint16_t reqId, tlp_X args, SAM_DeviceId *id){ | |
218 | ||
219 | ||
220 | // XXX place the dma record identifier 'id' here XXX // | |
221 | ||
222 | int count = 0; | |
223 | dev_access_t type = wr?DA_Store:DA_Load; | |
224 | dev_mode_t md = mode == mem_addr32?PCIE_IS32:PCIE_IS64; | |
225 | ||
226 | for(int i = 0; i < 8; i++) | |
227 | if(be >> i & 0x1) | |
228 | count++; | |
229 | if(length > 2) | |
230 | count += (length - 2) * 4; | |
231 | ||
232 | uint8_t * data_ptr = (uint8_t*)data; | |
233 | ||
234 | //debug_more("%s:devif_memAccess %s,length 0x%x, be 0x%x, count 0x%x\n", \ | |
235 | getName(),wr?"write":"read",length,be,count); | |
236 | ||
237 | debug_more("%s: device %s DMA %s 0x%x bytes\n",getName(),samDevs->getName(*id),wr?"out":"in",count); | |
238 | ||
239 | bool ret = true; | |
240 | while(count){ | |
241 | // break down the requests on 8K boundary (smallest page size) | |
242 | int bytes_in_page = (8*1024) - addr % (8*1024); | |
243 | int bytes_to_transfer = count > bytes_in_page ? bytes_in_page:count; | |
244 | ret &= piu_dma_access(&piuModel,addr,data_ptr,bytes_to_transfer,reqId,type,md,*id); | |
245 | addr += bytes_to_transfer; | |
246 | data_ptr += bytes_to_transfer; | |
247 | count -= bytes_to_transfer; | |
248 | } | |
249 | ||
250 | if(ret) | |
251 | return pcieCompleter(SC,getReqId()); | |
252 | else | |
253 | return pcieCompleter(CA,getReqId()); // XXX ??? | |
254 | } | |
255 | ||
256 | pcieCompleter samPiu::devif_msgAccess(uint8_t messageCode, msgRouting route, \ | |
257 | uint64_t tarIdOrAddr, uint16_t reqId, \ | |
258 | void * data, uint16_t length, \ | |
259 | uint16_t vendorId, uint32_t vendor_data, tlp_X args, SAM_DeviceId *id){ | |
260 | ||
261 | // handle intx messages | |
262 | ||
263 | // XXX create trace records for device 'id' INTX interrupts here XXX // | |
264 | ||
265 | ||
266 | debug_more("%s: device %s interrupt %s\n",getName(),samDevs->getName(*id),messageCode<=MSG_Assert_INTD ? "assert":"deassert"); | |
267 | ||
268 | switch(messageCode){ | |
269 | case MSG_Assert_INTA: | |
270 | setIntx(reqId & 0xff, 0, true); | |
271 | piu_assert_intx(&piuModel,0,reqId >> 3 & 0x1f); | |
272 | break; | |
273 | case MSG_Assert_INTB: | |
274 | setIntx(reqId & 0xff, 1, true); | |
275 | piu_assert_intx(&piuModel,1,reqId >> 3 & 0x1f); | |
276 | break; | |
277 | case MSG_Assert_INTC: | |
278 | setIntx(reqId & 0xff, 2, true); | |
279 | piu_assert_intx(&piuModel,2,reqId >> 3 & 0x1f); | |
280 | break; | |
281 | case MSG_Assert_INTD: | |
282 | setIntx(reqId & 0xff, 3, true); | |
283 | piu_assert_intx(&piuModel,3,reqId >> 3 & 0x1f); | |
284 | break; | |
285 | case MSG_Deassert_INTA: | |
286 | setIntx(reqId & 0xff, 0, false); | |
287 | piu_deassert_intx(&piuModel,0,reqId >> 3 & 0x1f); | |
288 | break; | |
289 | case MSG_Deassert_INTB: | |
290 | setIntx(reqId & 0xff, 1, false); | |
291 | piu_deassert_intx(&piuModel,1,reqId >> 3 & 0x1f); | |
292 | break; | |
293 | case MSG_Deassert_INTC: | |
294 | setIntx(reqId & 0xff, 2, false); | |
295 | piu_deassert_intx(&piuModel,2,reqId >> 3 & 0x1f); | |
296 | break; | |
297 | case MSG_Deassert_INTD: | |
298 | setIntx(reqId & 0xff, 3, false); | |
299 | piu_deassert_intx(&piuModel,3,reqId >> 3 & 0x1f); | |
300 | break; | |
301 | default: | |
302 | debug_err("%s:devif_msgAccess: message code %x not supported yet\n", \ | |
303 | getName(),messageCode); | |
304 | } | |
305 | return SIM_OK; | |
306 | } | |
307 | ||
308 | ||
309 | int samPiu::handlePio(uint32_t cpuid,uint64_t paddr, mmi_bool_t wr, \ | |
310 | uint32_t size, uint64_t* buf, uint8_t bytemask){ | |
311 | ||
312 | pcieCompleter s; | |
313 | maccess_t memop; | |
314 | ||
315 | switch(size){ | |
316 | case 1: | |
317 | memop = MA_Size8; | |
318 | break; | |
319 | case 2: | |
320 | memop = MA_Size16; | |
321 | break; | |
322 | case 4: | |
323 | memop = MA_Size32; | |
324 | break; | |
325 | case 8: | |
326 | memop = MA_Size64; | |
327 | break; | |
328 | default: | |
329 | assert(0); | |
330 | } | |
331 | ||
332 | switch(wr){ | |
333 | case false: | |
334 | memop = (MACCESS)(memop | MA_Ld); | |
335 | break; | |
336 | case true: | |
337 | memop = (MACCESS)(memop | MA_St); | |
338 | break; | |
339 | default: | |
340 | assert(0); | |
341 | } | |
342 | ||
343 | if(wr && (paddr == PIU_CSR_BASE + PIU_DMU_PCIE_CONFREG_OFFSET)){ | |
344 | secondary_bus_no = (*buf) >> 24 & 0xff; | |
345 | primary_bus_no = (*buf) >> 8 & 0xff; | |
346 | device = (*buf) >> 3 & 0x1f; | |
347 | function = (*buf) & 0x7; | |
348 | } | |
349 | ||
350 | if(!wr) | |
351 | *buf = 0; | |
352 | ||
353 | // hook for target of the PIO | |
354 | SAM_DeviceId target = 0; | |
355 | s = piu_cpu_access(&piuModel,paddr,memop,buf,&target); | |
356 | ||
357 | debug_more("%s: accessed %s at 0x%llx\n",getName(),samDevs->getName(target),paddr); | |
358 | ||
359 | if(s.status == SC) | |
360 | return 0; | |
361 | return -1; | |
362 | } | |
363 | ||
364 | ||
365 | #include "vcpu.h" | |
366 | void samPiu::sendMondo(pcie_mondo_t *m){ | |
367 | ||
368 | VCPU_InterruptRequest r; | |
369 | r.itid = m->thread_id; | |
370 | r.isid = getReqId(); | |
371 | ||
372 | r.data[0] = m->data[0]; | |
373 | r.data[1] = m->data[1]; | |
374 | ||
375 | // assume only a single cpu (64 strand) configuration. | |
376 | ||
377 | int stat = ncuIf->sendPiuMondo(&r); | |
378 | ||
379 | if(stat == -1){ | |
380 | debug_more("%s:interrupt nacked by NCU\n",getName()); | |
381 | pthread_mutex_lock(&ncuMutex); | |
382 | VCPU_InterruptRequest *ir = new VCPU_InterruptRequest; | |
383 | *ir = r; | |
384 | irql.push_back(ir); | |
385 | pthread_mutex_unlock(&ncuMutex); | |
386 | return; | |
387 | } | |
388 | ||
389 | debug_more("%s: sent interrupt to strand %d, return stat %d\n",getName(),m->thread_id,stat); | |
390 | //printf("%s: sent interrupt to strand %d, return stat %d\n",getName(),m->thread_id,stat); | |
391 | } | |
392 | ||
393 | void samPiu::handle_ui(int argc, char * argv[]){ | |
394 | if(argc == 1){ | |
395 | ui_cmd_usage(); | |
396 | return; | |
397 | }else if(!strcmp(argv[1],"dump")){ | |
398 | FILE * fp = stderr; | |
399 | if(argv[2]){ | |
400 | fp = fopen(argv[2],"w"); | |
401 | if(!fp){ | |
402 | printf("%s dump: error opening file <%s>\n",getName(),argv[2]); | |
403 | fp = stderr; | |
404 | } | |
405 | } | |
406 | dump(fp); | |
407 | if( fp != stderr ) | |
408 | fclose(fp); | |
409 | }else if(!strcmp(argv[1],"restore")){ | |
410 | FILE * fp; | |
411 | if(argv[2]){ | |
412 | fp = fopen(argv[2],"r"); | |
413 | if(fp){ | |
414 | restore(fp); | |
415 | fclose(fp); | |
416 | }else | |
417 | printf("%s restore: error opening file <%s>\n",getName(),argv[2]); | |
418 | }else | |
419 | printf("%s restore: no restore filename specified\n",getName()); | |
420 | }else if(!strcmp(argv[1],"debug")){ | |
421 | if(argv[2]){ | |
422 | debug_level = atoi(argv[2]); | |
423 | printf("%s: set debug level to %d\n",getName(),debug_level); | |
424 | }else | |
425 | printf("%s: current debug level %d\n",getName(),debug_level); | |
426 | }else | |
427 | debug_err("%s: unsupported UI command <%s>\n",getName(),argv[1]); | |
428 | return; | |
429 | } |