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14#include "qemu/osdep.h"
15#include "cpu.h"
16#include "s390-pci-inst.h"
17#include "s390-pci-bus.h"
18#include "exec/memop.h"
19#include "exec/memory-internal.h"
20#include "qemu/error-report.h"
21#include "sysemu/hw_accel.h"
22#include "hw/s390x/tod.h"
23
24#ifndef DEBUG_S390PCI_INST
25#define DEBUG_S390PCI_INST 0
26#endif
27
28#define DPRINTF(fmt, ...) \
29 do { \
30 if (DEBUG_S390PCI_INST) { \
31 fprintf(stderr, "s390pci-inst: " fmt, ## __VA_ARGS__); \
32 } \
33 } while (0)
34
35static void s390_set_status_code(CPUS390XState *env,
36 uint8_t r, uint64_t status_code)
37{
38 env->regs[r] &= ~0xff000000ULL;
39 env->regs[r] |= (status_code & 0xff) << 24;
40}
41
42static int list_pci(ClpReqRspListPci *rrb, uint8_t *cc)
43{
44 S390PCIBusDevice *pbdev = NULL;
45 S390pciState *s = s390_get_phb();
46 uint32_t res_code, initial_l2, g_l2;
47 int rc, i;
48 uint64_t resume_token;
49
50 rc = 0;
51 if (lduw_p(&rrb->request.hdr.len) != 32) {
52 res_code = CLP_RC_LEN;
53 rc = -EINVAL;
54 goto out;
55 }
56
57 if ((ldl_p(&rrb->request.fmt) & CLP_MASK_FMT) != 0) {
58 res_code = CLP_RC_FMT;
59 rc = -EINVAL;
60 goto out;
61 }
62
63 if ((ldl_p(&rrb->request.fmt) & ~CLP_MASK_FMT) != 0 ||
64 ldq_p(&rrb->request.reserved1) != 0) {
65 res_code = CLP_RC_RESNOT0;
66 rc = -EINVAL;
67 goto out;
68 }
69
70 resume_token = ldq_p(&rrb->request.resume_token);
71
72 if (resume_token) {
73 pbdev = s390_pci_find_dev_by_idx(s, resume_token);
74 if (!pbdev) {
75 res_code = CLP_RC_LISTPCI_BADRT;
76 rc = -EINVAL;
77 goto out;
78 }
79 } else {
80 pbdev = s390_pci_find_next_avail_dev(s, NULL);
81 }
82
83 if (lduw_p(&rrb->response.hdr.len) < 48) {
84 res_code = CLP_RC_8K;
85 rc = -EINVAL;
86 goto out;
87 }
88
89 initial_l2 = lduw_p(&rrb->response.hdr.len);
90 if ((initial_l2 - LIST_PCI_HDR_LEN) % sizeof(ClpFhListEntry)
91 != 0) {
92 res_code = CLP_RC_LEN;
93 rc = -EINVAL;
94 *cc = 3;
95 goto out;
96 }
97
98 stl_p(&rrb->response.fmt, 0);
99 stq_p(&rrb->response.reserved1, 0);
100 stl_p(&rrb->response.mdd, FH_MASK_SHM);
101 stw_p(&rrb->response.max_fn, PCI_MAX_FUNCTIONS);
102 rrb->response.flags = UID_CHECKING_ENABLED;
103 rrb->response.entry_size = sizeof(ClpFhListEntry);
104
105 i = 0;
106 g_l2 = LIST_PCI_HDR_LEN;
107 while (g_l2 < initial_l2 && pbdev) {
108 stw_p(&rrb->response.fh_list[i].device_id,
109 pci_get_word(pbdev->pdev->config + PCI_DEVICE_ID));
110 stw_p(&rrb->response.fh_list[i].vendor_id,
111 pci_get_word(pbdev->pdev->config + PCI_VENDOR_ID));
112
113 stl_p(&rrb->response.fh_list[i].config,
114 pbdev->state == ZPCI_FS_STANDBY ? 0 : 1 << 31);
115 stl_p(&rrb->response.fh_list[i].fid, pbdev->fid);
116 stl_p(&rrb->response.fh_list[i].fh, pbdev->fh);
117
118 g_l2 += sizeof(ClpFhListEntry);
119
120 DPRINTF("g_l2 %d vendor id 0x%x device id 0x%x fid 0x%x fh 0x%x\n",
121 g_l2,
122 lduw_p(&rrb->response.fh_list[i].vendor_id),
123 lduw_p(&rrb->response.fh_list[i].device_id),
124 ldl_p(&rrb->response.fh_list[i].fid),
125 ldl_p(&rrb->response.fh_list[i].fh));
126 pbdev = s390_pci_find_next_avail_dev(s, pbdev);
127 i++;
128 }
129
130 if (!pbdev) {
131 resume_token = 0;
132 } else {
133 resume_token = pbdev->fh & FH_MASK_INDEX;
134 }
135 stq_p(&rrb->response.resume_token, resume_token);
136 stw_p(&rrb->response.hdr.len, g_l2);
137 stw_p(&rrb->response.hdr.rsp, CLP_RC_OK);
138out:
139 if (rc) {
140 DPRINTF("list pci failed rc 0x%x\n", rc);
141 stw_p(&rrb->response.hdr.rsp, res_code);
142 }
143 return rc;
144}
145
146int clp_service_call(S390CPU *cpu, uint8_t r2, uintptr_t ra)
147{
148 ClpReqHdr *reqh;
149 ClpRspHdr *resh;
150 S390PCIBusDevice *pbdev;
151 uint32_t req_len;
152 uint32_t res_len;
153 uint8_t buffer[4096 * 2];
154 uint8_t cc = 0;
155 CPUS390XState *env = &cpu->env;
156 S390pciState *s = s390_get_phb();
157 int i;
158
159 if (env->psw.mask & PSW_MASK_PSTATE) {
160 s390_program_interrupt(env, PGM_PRIVILEGED, ra);
161 return 0;
162 }
163
164 if (s390_cpu_virt_mem_read(cpu, env->regs[r2], r2, buffer, sizeof(*reqh))) {
165 s390_cpu_virt_mem_handle_exc(cpu, ra);
166 return 0;
167 }
168 reqh = (ClpReqHdr *)buffer;
169 req_len = lduw_p(&reqh->len);
170 if (req_len < 16 || req_len > 8184 || (req_len % 8 != 0)) {
171 s390_program_interrupt(env, PGM_OPERAND, ra);
172 return 0;
173 }
174
175 if (s390_cpu_virt_mem_read(cpu, env->regs[r2], r2, buffer,
176 req_len + sizeof(*resh))) {
177 s390_cpu_virt_mem_handle_exc(cpu, ra);
178 return 0;
179 }
180 resh = (ClpRspHdr *)(buffer + req_len);
181 res_len = lduw_p(&resh->len);
182 if (res_len < 8 || res_len > 8176 || (res_len % 8 != 0)) {
183 s390_program_interrupt(env, PGM_OPERAND, ra);
184 return 0;
185 }
186 if ((req_len + res_len) > 8192) {
187 s390_program_interrupt(env, PGM_OPERAND, ra);
188 return 0;
189 }
190
191 if (s390_cpu_virt_mem_read(cpu, env->regs[r2], r2, buffer,
192 req_len + res_len)) {
193 s390_cpu_virt_mem_handle_exc(cpu, ra);
194 return 0;
195 }
196
197 if (req_len != 32) {
198 stw_p(&resh->rsp, CLP_RC_LEN);
199 goto out;
200 }
201
202 switch (lduw_p(&reqh->cmd)) {
203 case CLP_LIST_PCI: {
204 ClpReqRspListPci *rrb = (ClpReqRspListPci *)buffer;
205 list_pci(rrb, &cc);
206 break;
207 }
208 case CLP_SET_PCI_FN: {
209 ClpReqSetPci *reqsetpci = (ClpReqSetPci *)reqh;
210 ClpRspSetPci *ressetpci = (ClpRspSetPci *)resh;
211
212 pbdev = s390_pci_find_dev_by_fh(s, ldl_p(&reqsetpci->fh));
213 if (!pbdev) {
214 stw_p(&ressetpci->hdr.rsp, CLP_RC_SETPCIFN_FH);
215 goto out;
216 }
217
218 switch (reqsetpci->oc) {
219 case CLP_SET_ENABLE_PCI_FN:
220 switch (reqsetpci->ndas) {
221 case 0:
222 stw_p(&ressetpci->hdr.rsp, CLP_RC_SETPCIFN_DMAAS);
223 goto out;
224 case 1:
225 break;
226 default:
227 stw_p(&ressetpci->hdr.rsp, CLP_RC_SETPCIFN_RES);
228 goto out;
229 }
230
231 if (pbdev->fh & FH_MASK_ENABLE) {
232 stw_p(&ressetpci->hdr.rsp, CLP_RC_SETPCIFN_FHOP);
233 goto out;
234 }
235
236 pbdev->fh |= FH_MASK_ENABLE;
237 pbdev->state = ZPCI_FS_ENABLED;
238 stl_p(&ressetpci->fh, pbdev->fh);
239 stw_p(&ressetpci->hdr.rsp, CLP_RC_OK);
240 break;
241 case CLP_SET_DISABLE_PCI_FN:
242 if (!(pbdev->fh & FH_MASK_ENABLE)) {
243 stw_p(&ressetpci->hdr.rsp, CLP_RC_SETPCIFN_FHOP);
244 goto out;
245 }
246 device_reset(DEVICE(pbdev));
247 pbdev->fh &= ~FH_MASK_ENABLE;
248 pbdev->state = ZPCI_FS_DISABLED;
249 stl_p(&ressetpci->fh, pbdev->fh);
250 stw_p(&ressetpci->hdr.rsp, CLP_RC_OK);
251 break;
252 default:
253 DPRINTF("unknown set pci command\n");
254 stw_p(&ressetpci->hdr.rsp, CLP_RC_SETPCIFN_FHOP);
255 break;
256 }
257 break;
258 }
259 case CLP_QUERY_PCI_FN: {
260 ClpReqQueryPci *reqquery = (ClpReqQueryPci *)reqh;
261 ClpRspQueryPci *resquery = (ClpRspQueryPci *)resh;
262
263 pbdev = s390_pci_find_dev_by_fh(s, ldl_p(&reqquery->fh));
264 if (!pbdev) {
265 DPRINTF("query pci no pci dev\n");
266 stw_p(&resquery->hdr.rsp, CLP_RC_SETPCIFN_FH);
267 goto out;
268 }
269
270 for (i = 0; i < PCI_BAR_COUNT; i++) {
271 uint32_t data = pci_get_long(pbdev->pdev->config +
272 PCI_BASE_ADDRESS_0 + (i * 4));
273
274 stl_p(&resquery->bar[i], data);
275 resquery->bar_size[i] = pbdev->pdev->io_regions[i].size ?
276 ctz64(pbdev->pdev->io_regions[i].size) : 0;
277 DPRINTF("bar %d addr 0x%x size 0x%" PRIx64 "barsize 0x%x\n", i,
278 ldl_p(&resquery->bar[i]),
279 pbdev->pdev->io_regions[i].size,
280 resquery->bar_size[i]);
281 }
282
283 stq_p(&resquery->sdma, ZPCI_SDMA_ADDR);
284 stq_p(&resquery->edma, ZPCI_EDMA_ADDR);
285 stl_p(&resquery->fid, pbdev->fid);
286 stw_p(&resquery->pchid, 0);
287 stw_p(&resquery->ug, 1);
288 stl_p(&resquery->uid, pbdev->uid);
289 stw_p(&resquery->hdr.rsp, CLP_RC_OK);
290 break;
291 }
292 case CLP_QUERY_PCI_FNGRP: {
293 ClpRspQueryPciGrp *resgrp = (ClpRspQueryPciGrp *)resh;
294 resgrp->fr = 1;
295 stq_p(&resgrp->dasm, 0);
296 stq_p(&resgrp->msia, ZPCI_MSI_ADDR);
297 stw_p(&resgrp->mui, DEFAULT_MUI);
298 stw_p(&resgrp->i, 128);
299 stw_p(&resgrp->maxstbl, 128);
300 resgrp->version = 0;
301
302 stw_p(&resgrp->hdr.rsp, CLP_RC_OK);
303 break;
304 }
305 default:
306 DPRINTF("unknown clp command\n");
307 stw_p(&resh->rsp, CLP_RC_CMD);
308 break;
309 }
310
311out:
312 if (s390_cpu_virt_mem_write(cpu, env->regs[r2], r2, buffer,
313 req_len + res_len)) {
314 s390_cpu_virt_mem_handle_exc(cpu, ra);
315 return 0;
316 }
317 setcc(cpu, cc);
318 return 0;
319}
320
321
322
323
324
325
326
327
328static int zpci_endian_swap(uint64_t *ptr, uint8_t len)
329{
330 uint64_t data = *ptr;
331
332 switch (len) {
333 case 1:
334 break;
335 case 2:
336 data = bswap16(data);
337 break;
338 case 4:
339 data = bswap32(data);
340 break;
341 case 8:
342 data = bswap64(data);
343 break;
344 default:
345 return -EINVAL;
346 }
347 *ptr = data;
348 return 0;
349}
350
351static MemoryRegion *s390_get_subregion(MemoryRegion *mr, uint64_t offset,
352 uint8_t len)
353{
354 MemoryRegion *subregion;
355 uint64_t subregion_size;
356
357 QTAILQ_FOREACH(subregion, &mr->subregions, subregions_link) {
358 subregion_size = int128_get64(subregion->size);
359 if ((offset >= subregion->addr) &&
360 (offset + len) <= (subregion->addr + subregion_size)) {
361 mr = subregion;
362 break;
363 }
364 }
365 return mr;
366}
367
368static MemTxResult zpci_read_bar(S390PCIBusDevice *pbdev, uint8_t pcias,
369 uint64_t offset, uint64_t *data, uint8_t len)
370{
371 MemoryRegion *mr;
372
373 mr = pbdev->pdev->io_regions[pcias].memory;
374 mr = s390_get_subregion(mr, offset, len);
375 offset -= mr->addr;
376 return memory_region_dispatch_read(mr, offset, data,
377 size_memop(len) | MO_BE,
378 MEMTXATTRS_UNSPECIFIED);
379}
380
381int pcilg_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2, uintptr_t ra)
382{
383 CPUS390XState *env = &cpu->env;
384 S390PCIBusDevice *pbdev;
385 uint64_t offset;
386 uint64_t data;
387 MemTxResult result;
388 uint8_t len;
389 uint32_t fh;
390 uint8_t pcias;
391
392 if (env->psw.mask & PSW_MASK_PSTATE) {
393 s390_program_interrupt(env, PGM_PRIVILEGED, ra);
394 return 0;
395 }
396
397 if (r2 & 0x1) {
398 s390_program_interrupt(env, PGM_SPECIFICATION, ra);
399 return 0;
400 }
401
402 fh = env->regs[r2] >> 32;
403 pcias = (env->regs[r2] >> 16) & 0xf;
404 len = env->regs[r2] & 0xf;
405 offset = env->regs[r2 + 1];
406
407 if (!(fh & FH_MASK_ENABLE)) {
408 setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
409 return 0;
410 }
411
412 pbdev = s390_pci_find_dev_by_fh(s390_get_phb(), fh);
413 if (!pbdev) {
414 DPRINTF("pcilg no pci dev\n");
415 setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
416 return 0;
417 }
418
419 switch (pbdev->state) {
420 case ZPCI_FS_PERMANENT_ERROR:
421 case ZPCI_FS_ERROR:
422 setcc(cpu, ZPCI_PCI_LS_ERR);
423 s390_set_status_code(env, r2, ZPCI_PCI_ST_BLOCKED);
424 return 0;
425 default:
426 break;
427 }
428
429 switch (pcias) {
430 case ZPCI_IO_BAR_MIN...ZPCI_IO_BAR_MAX:
431 if (!len || (len > (8 - (offset & 0x7)))) {
432 s390_program_interrupt(env, PGM_OPERAND, ra);
433 return 0;
434 }
435 result = zpci_read_bar(pbdev, pcias, offset, &data, len);
436 if (result != MEMTX_OK) {
437 s390_program_interrupt(env, PGM_OPERAND, ra);
438 return 0;
439 }
440 break;
441 case ZPCI_CONFIG_BAR:
442 if (!len || (len > (4 - (offset & 0x3))) || len == 3) {
443 s390_program_interrupt(env, PGM_OPERAND, ra);
444 return 0;
445 }
446 data = pci_host_config_read_common(
447 pbdev->pdev, offset, pci_config_size(pbdev->pdev), len);
448
449 if (zpci_endian_swap(&data, len)) {
450 s390_program_interrupt(env, PGM_OPERAND, ra);
451 return 0;
452 }
453 break;
454 default:
455 DPRINTF("pcilg invalid space\n");
456 setcc(cpu, ZPCI_PCI_LS_ERR);
457 s390_set_status_code(env, r2, ZPCI_PCI_ST_INVAL_AS);
458 return 0;
459 }
460
461 pbdev->fmb.counter[ZPCI_FMB_CNT_LD]++;
462
463 env->regs[r1] = data;
464 setcc(cpu, ZPCI_PCI_LS_OK);
465 return 0;
466}
467
468static MemTxResult zpci_write_bar(S390PCIBusDevice *pbdev, uint8_t pcias,
469 uint64_t offset, uint64_t data, uint8_t len)
470{
471 MemoryRegion *mr;
472
473 mr = pbdev->pdev->io_regions[pcias].memory;
474 mr = s390_get_subregion(mr, offset, len);
475 offset -= mr->addr;
476 return memory_region_dispatch_write(mr, offset, data,
477 size_memop(len) | MO_BE,
478 MEMTXATTRS_UNSPECIFIED);
479}
480
481int pcistg_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2, uintptr_t ra)
482{
483 CPUS390XState *env = &cpu->env;
484 uint64_t offset, data;
485 S390PCIBusDevice *pbdev;
486 MemTxResult result;
487 uint8_t len;
488 uint32_t fh;
489 uint8_t pcias;
490
491 if (env->psw.mask & PSW_MASK_PSTATE) {
492 s390_program_interrupt(env, PGM_PRIVILEGED, ra);
493 return 0;
494 }
495
496 if (r2 & 0x1) {
497 s390_program_interrupt(env, PGM_SPECIFICATION, ra);
498 return 0;
499 }
500
501 fh = env->regs[r2] >> 32;
502 pcias = (env->regs[r2] >> 16) & 0xf;
503 len = env->regs[r2] & 0xf;
504 offset = env->regs[r2 + 1];
505 data = env->regs[r1];
506
507 if (!(fh & FH_MASK_ENABLE)) {
508 setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
509 return 0;
510 }
511
512 pbdev = s390_pci_find_dev_by_fh(s390_get_phb(), fh);
513 if (!pbdev) {
514 DPRINTF("pcistg no pci dev\n");
515 setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
516 return 0;
517 }
518
519 switch (pbdev->state) {
520
521
522
523 case ZPCI_FS_PERMANENT_ERROR:
524 case ZPCI_FS_ERROR:
525 setcc(cpu, ZPCI_PCI_LS_ERR);
526 s390_set_status_code(env, r2, ZPCI_PCI_ST_BLOCKED);
527 return 0;
528 default:
529 break;
530 }
531
532 switch (pcias) {
533
534 case ZPCI_IO_BAR_MIN...ZPCI_IO_BAR_MAX:
535
536
537
538 if (!len || (len > (8 - (offset & 0x7)))) {
539 s390_program_interrupt(env, PGM_OPERAND, ra);
540 return 0;
541 }
542
543 result = zpci_write_bar(pbdev, pcias, offset, data, len);
544 if (result != MEMTX_OK) {
545 s390_program_interrupt(env, PGM_OPERAND, ra);
546 return 0;
547 }
548 break;
549 case ZPCI_CONFIG_BAR:
550
551
552 if (!len || (len > (4 - (offset & 0x3))) || len == 3) {
553 s390_program_interrupt(env, PGM_OPERAND, ra);
554 return 0;
555 }
556
557 zpci_endian_swap(&data, len);
558 pci_host_config_write_common(pbdev->pdev, offset,
559 pci_config_size(pbdev->pdev),
560 data, len);
561 break;
562 default:
563 DPRINTF("pcistg invalid space\n");
564 setcc(cpu, ZPCI_PCI_LS_ERR);
565 s390_set_status_code(env, r2, ZPCI_PCI_ST_INVAL_AS);
566 return 0;
567 }
568
569 pbdev->fmb.counter[ZPCI_FMB_CNT_ST]++;
570
571 setcc(cpu, ZPCI_PCI_LS_OK);
572 return 0;
573}
574
575static void s390_pci_update_iotlb(S390PCIIOMMU *iommu, S390IOTLBEntry *entry)
576{
577 S390IOTLBEntry *cache = g_hash_table_lookup(iommu->iotlb, &entry->iova);
578 IOMMUTLBEntry notify = {
579 .target_as = &address_space_memory,
580 .iova = entry->iova,
581 .translated_addr = entry->translated_addr,
582 .perm = entry->perm,
583 .addr_mask = ~PAGE_MASK,
584 };
585
586 if (entry->perm == IOMMU_NONE) {
587 if (!cache) {
588 return;
589 }
590 g_hash_table_remove(iommu->iotlb, &entry->iova);
591 } else {
592 if (cache) {
593 if (cache->perm == entry->perm &&
594 cache->translated_addr == entry->translated_addr) {
595 return;
596 }
597
598 notify.perm = IOMMU_NONE;
599 memory_region_notify_iommu(&iommu->iommu_mr, 0, notify);
600 notify.perm = entry->perm;
601 }
602
603 cache = g_new(S390IOTLBEntry, 1);
604 cache->iova = entry->iova;
605 cache->translated_addr = entry->translated_addr;
606 cache->len = PAGE_SIZE;
607 cache->perm = entry->perm;
608 g_hash_table_replace(iommu->iotlb, &cache->iova, cache);
609 }
610
611 memory_region_notify_iommu(&iommu->iommu_mr, 0, notify);
612}
613
614int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2, uintptr_t ra)
615{
616 CPUS390XState *env = &cpu->env;
617 uint32_t fh;
618 uint16_t error = 0;
619 S390PCIBusDevice *pbdev;
620 S390PCIIOMMU *iommu;
621 S390IOTLBEntry entry;
622 hwaddr start, end;
623
624 if (env->psw.mask & PSW_MASK_PSTATE) {
625 s390_program_interrupt(env, PGM_PRIVILEGED, ra);
626 return 0;
627 }
628
629 if (r2 & 0x1) {
630 s390_program_interrupt(env, PGM_SPECIFICATION, ra);
631 return 0;
632 }
633
634 fh = env->regs[r1] >> 32;
635 start = env->regs[r2];
636 end = start + env->regs[r2 + 1];
637
638 pbdev = s390_pci_find_dev_by_fh(s390_get_phb(), fh);
639 if (!pbdev) {
640 DPRINTF("rpcit no pci dev\n");
641 setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
642 return 0;
643 }
644
645 switch (pbdev->state) {
646 case ZPCI_FS_RESERVED:
647 case ZPCI_FS_STANDBY:
648 case ZPCI_FS_DISABLED:
649 case ZPCI_FS_PERMANENT_ERROR:
650 setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
651 return 0;
652 case ZPCI_FS_ERROR:
653 setcc(cpu, ZPCI_PCI_LS_ERR);
654 s390_set_status_code(env, r1, ZPCI_MOD_ST_ERROR_RECOVER);
655 return 0;
656 default:
657 break;
658 }
659
660 iommu = pbdev->iommu;
661 if (!iommu->g_iota) {
662 error = ERR_EVENT_INVALAS;
663 goto err;
664 }
665
666 if (end < iommu->pba || start > iommu->pal) {
667 error = ERR_EVENT_OORANGE;
668 goto err;
669 }
670
671 while (start < end) {
672 error = s390_guest_io_table_walk(iommu->g_iota, start, &entry);
673 if (error) {
674 break;
675 }
676
677 start += entry.len;
678 while (entry.iova < start && entry.iova < end) {
679 s390_pci_update_iotlb(iommu, &entry);
680 entry.iova += PAGE_SIZE;
681 entry.translated_addr += PAGE_SIZE;
682 }
683 }
684err:
685 if (error) {
686 pbdev->state = ZPCI_FS_ERROR;
687 setcc(cpu, ZPCI_PCI_LS_ERR);
688 s390_set_status_code(env, r1, ZPCI_PCI_ST_FUNC_IN_ERR);
689 s390_pci_generate_error_event(error, pbdev->fh, pbdev->fid, start, 0);
690 } else {
691 pbdev->fmb.counter[ZPCI_FMB_CNT_RPCIT]++;
692 setcc(cpu, ZPCI_PCI_LS_OK);
693 }
694 return 0;
695}
696
697int pcistb_service_call(S390CPU *cpu, uint8_t r1, uint8_t r3, uint64_t gaddr,
698 uint8_t ar, uintptr_t ra)
699{
700 CPUS390XState *env = &cpu->env;
701 S390PCIBusDevice *pbdev;
702 MemoryRegion *mr;
703 MemTxResult result;
704 uint64_t offset;
705 int i;
706 uint32_t fh;
707 uint8_t pcias;
708 uint8_t len;
709 uint8_t buffer[128];
710
711 if (env->psw.mask & PSW_MASK_PSTATE) {
712 s390_program_interrupt(env, PGM_PRIVILEGED, ra);
713 return 0;
714 }
715
716 fh = env->regs[r1] >> 32;
717 pcias = (env->regs[r1] >> 16) & 0xf;
718 len = env->regs[r1] & 0xff;
719 offset = env->regs[r3];
720
721 if (!(fh & FH_MASK_ENABLE)) {
722 setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
723 return 0;
724 }
725
726 pbdev = s390_pci_find_dev_by_fh(s390_get_phb(), fh);
727 if (!pbdev) {
728 DPRINTF("pcistb no pci dev fh 0x%x\n", fh);
729 setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
730 return 0;
731 }
732
733 switch (pbdev->state) {
734 case ZPCI_FS_PERMANENT_ERROR:
735 case ZPCI_FS_ERROR:
736 setcc(cpu, ZPCI_PCI_LS_ERR);
737 s390_set_status_code(env, r1, ZPCI_PCI_ST_BLOCKED);
738 return 0;
739 default:
740 break;
741 }
742
743 if (pcias > ZPCI_IO_BAR_MAX) {
744 DPRINTF("pcistb invalid space\n");
745 setcc(cpu, ZPCI_PCI_LS_ERR);
746 s390_set_status_code(env, r1, ZPCI_PCI_ST_INVAL_AS);
747 return 0;
748 }
749
750
751
752 if (offset % 8) {
753 goto specification_error;
754 }
755
756
757 if ((len <= 8) || (len % 8) || (len > pbdev->maxstbl)) {
758 goto specification_error;
759 }
760
761 if (((offset & 0xfff) + len) > 0x1000) {
762 goto specification_error;
763 }
764
765 if (gaddr & 0x07UL) {
766 goto specification_error;
767 }
768
769 mr = pbdev->pdev->io_regions[pcias].memory;
770 mr = s390_get_subregion(mr, offset, len);
771 offset -= mr->addr;
772
773 if (!memory_region_access_valid(mr, offset, len, true,
774 MEMTXATTRS_UNSPECIFIED)) {
775 s390_program_interrupt(env, PGM_OPERAND, ra);
776 return 0;
777 }
778
779 if (s390_cpu_virt_mem_read(cpu, gaddr, ar, buffer, len)) {
780 s390_cpu_virt_mem_handle_exc(cpu, ra);
781 return 0;
782 }
783
784 for (i = 0; i < len / 8; i++) {
785 result = memory_region_dispatch_write(mr, offset + i * 8,
786 ldq_p(buffer + i * 8),
787 MO_64, MEMTXATTRS_UNSPECIFIED);
788 if (result != MEMTX_OK) {
789 s390_program_interrupt(env, PGM_OPERAND, ra);
790 return 0;
791 }
792 }
793
794 pbdev->fmb.counter[ZPCI_FMB_CNT_STB]++;
795
796 setcc(cpu, ZPCI_PCI_LS_OK);
797 return 0;
798
799specification_error:
800 s390_program_interrupt(env, PGM_SPECIFICATION, ra);
801 return 0;
802}
803
804static int reg_irqs(CPUS390XState *env, S390PCIBusDevice *pbdev, ZpciFib fib)
805{
806 int ret, len;
807 uint8_t isc = FIB_DATA_ISC(ldl_p(&fib.data));
808
809 pbdev->routes.adapter.adapter_id = css_get_adapter_id(
810 CSS_IO_ADAPTER_PCI, isc);
811 pbdev->summary_ind = get_indicator(ldq_p(&fib.aisb), sizeof(uint64_t));
812 len = BITS_TO_LONGS(FIB_DATA_NOI(ldl_p(&fib.data))) * sizeof(unsigned long);
813 pbdev->indicator = get_indicator(ldq_p(&fib.aibv), len);
814
815 ret = map_indicator(&pbdev->routes.adapter, pbdev->summary_ind);
816 if (ret) {
817 goto out;
818 }
819
820 ret = map_indicator(&pbdev->routes.adapter, pbdev->indicator);
821 if (ret) {
822 goto out;
823 }
824
825 pbdev->routes.adapter.summary_addr = ldq_p(&fib.aisb);
826 pbdev->routes.adapter.summary_offset = FIB_DATA_AISBO(ldl_p(&fib.data));
827 pbdev->routes.adapter.ind_addr = ldq_p(&fib.aibv);
828 pbdev->routes.adapter.ind_offset = FIB_DATA_AIBVO(ldl_p(&fib.data));
829 pbdev->isc = isc;
830 pbdev->noi = FIB_DATA_NOI(ldl_p(&fib.data));
831 pbdev->sum = FIB_DATA_SUM(ldl_p(&fib.data));
832
833 DPRINTF("reg_irqs adapter id %d\n", pbdev->routes.adapter.adapter_id);
834 return 0;
835out:
836 release_indicator(&pbdev->routes.adapter, pbdev->summary_ind);
837 release_indicator(&pbdev->routes.adapter, pbdev->indicator);
838 pbdev->summary_ind = NULL;
839 pbdev->indicator = NULL;
840 return ret;
841}
842
843int pci_dereg_irqs(S390PCIBusDevice *pbdev)
844{
845 release_indicator(&pbdev->routes.adapter, pbdev->summary_ind);
846 release_indicator(&pbdev->routes.adapter, pbdev->indicator);
847
848 pbdev->summary_ind = NULL;
849 pbdev->indicator = NULL;
850 pbdev->routes.adapter.summary_addr = 0;
851 pbdev->routes.adapter.summary_offset = 0;
852 pbdev->routes.adapter.ind_addr = 0;
853 pbdev->routes.adapter.ind_offset = 0;
854 pbdev->isc = 0;
855 pbdev->noi = 0;
856 pbdev->sum = 0;
857
858 DPRINTF("dereg_irqs adapter id %d\n", pbdev->routes.adapter.adapter_id);
859 return 0;
860}
861
862static int reg_ioat(CPUS390XState *env, S390PCIIOMMU *iommu, ZpciFib fib,
863 uintptr_t ra)
864{
865 uint64_t pba = ldq_p(&fib.pba);
866 uint64_t pal = ldq_p(&fib.pal);
867 uint64_t g_iota = ldq_p(&fib.iota);
868 uint8_t dt = (g_iota >> 2) & 0x7;
869 uint8_t t = (g_iota >> 11) & 0x1;
870
871 pba &= ~0xfff;
872 pal |= 0xfff;
873 if (pba > pal || pba < ZPCI_SDMA_ADDR || pal > ZPCI_EDMA_ADDR) {
874 s390_program_interrupt(env, PGM_OPERAND, ra);
875 return -EINVAL;
876 }
877
878
879 if (!(dt == ZPCI_IOTA_RTTO && t)) {
880 error_report("unsupported ioat dt %d t %d", dt, t);
881 s390_program_interrupt(env, PGM_OPERAND, ra);
882 return -EINVAL;
883 }
884
885 iommu->pba = pba;
886 iommu->pal = pal;
887 iommu->g_iota = g_iota;
888
889 s390_pci_iommu_enable(iommu);
890
891 return 0;
892}
893
894void pci_dereg_ioat(S390PCIIOMMU *iommu)
895{
896 s390_pci_iommu_disable(iommu);
897 iommu->pba = 0;
898 iommu->pal = 0;
899 iommu->g_iota = 0;
900}
901
902void fmb_timer_free(S390PCIBusDevice *pbdev)
903{
904 if (pbdev->fmb_timer) {
905 timer_del(pbdev->fmb_timer);
906 timer_free(pbdev->fmb_timer);
907 pbdev->fmb_timer = NULL;
908 }
909 pbdev->fmb_addr = 0;
910 memset(&pbdev->fmb, 0, sizeof(ZpciFmb));
911}
912
913static int fmb_do_update(S390PCIBusDevice *pbdev, int offset, uint64_t val,
914 int len)
915{
916 MemTxResult ret;
917 uint64_t dst = pbdev->fmb_addr + offset;
918
919 switch (len) {
920 case 8:
921 address_space_stq_be(&address_space_memory, dst, val,
922 MEMTXATTRS_UNSPECIFIED,
923 &ret);
924 break;
925 case 4:
926 address_space_stl_be(&address_space_memory, dst, val,
927 MEMTXATTRS_UNSPECIFIED,
928 &ret);
929 break;
930 case 2:
931 address_space_stw_be(&address_space_memory, dst, val,
932 MEMTXATTRS_UNSPECIFIED,
933 &ret);
934 break;
935 case 1:
936 address_space_stb(&address_space_memory, dst, val,
937 MEMTXATTRS_UNSPECIFIED,
938 &ret);
939 break;
940 default:
941 ret = MEMTX_ERROR;
942 break;
943 }
944 if (ret != MEMTX_OK) {
945 s390_pci_generate_error_event(ERR_EVENT_FMBA, pbdev->fh, pbdev->fid,
946 pbdev->fmb_addr, 0);
947 fmb_timer_free(pbdev);
948 }
949
950 return ret;
951}
952
953static void fmb_update(void *opaque)
954{
955 S390PCIBusDevice *pbdev = opaque;
956 int64_t t = qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL);
957 int i;
958
959
960 pbdev->fmb.last_update *= 2;
961 pbdev->fmb.last_update |= UPDATE_U_BIT;
962 if (fmb_do_update(pbdev, offsetof(ZpciFmb, last_update),
963 pbdev->fmb.last_update,
964 sizeof(pbdev->fmb.last_update))) {
965 return;
966 }
967
968
969 if (fmb_do_update(pbdev, offsetof(ZpciFmb, sample),
970 pbdev->fmb.sample++,
971 sizeof(pbdev->fmb.sample))) {
972 return;
973 }
974
975
976 for (i = 0; i < ZPCI_FMB_CNT_MAX; i++) {
977 if (fmb_do_update(pbdev, offsetof(ZpciFmb, counter[i]),
978 pbdev->fmb.counter[i],
979 sizeof(pbdev->fmb.counter[0]))) {
980 return;
981 }
982 }
983
984
985 pbdev->fmb.last_update = time2tod(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL));
986 pbdev->fmb.last_update *= 2;
987 if (fmb_do_update(pbdev, offsetof(ZpciFmb, last_update),
988 pbdev->fmb.last_update,
989 sizeof(pbdev->fmb.last_update))) {
990 return;
991 }
992 timer_mod(pbdev->fmb_timer, t + DEFAULT_MUI);
993}
994
995int mpcifc_service_call(S390CPU *cpu, uint8_t r1, uint64_t fiba, uint8_t ar,
996 uintptr_t ra)
997{
998 CPUS390XState *env = &cpu->env;
999 uint8_t oc, dmaas;
1000 uint32_t fh;
1001 ZpciFib fib;
1002 S390PCIBusDevice *pbdev;
1003 uint64_t cc = ZPCI_PCI_LS_OK;
1004
1005 if (env->psw.mask & PSW_MASK_PSTATE) {
1006 s390_program_interrupt(env, PGM_PRIVILEGED, ra);
1007 return 0;
1008 }
1009
1010 oc = env->regs[r1] & 0xff;
1011 dmaas = (env->regs[r1] >> 16) & 0xff;
1012 fh = env->regs[r1] >> 32;
1013
1014 if (fiba & 0x7) {
1015 s390_program_interrupt(env, PGM_SPECIFICATION, ra);
1016 return 0;
1017 }
1018
1019 pbdev = s390_pci_find_dev_by_fh(s390_get_phb(), fh);
1020 if (!pbdev) {
1021 DPRINTF("mpcifc no pci dev fh 0x%x\n", fh);
1022 setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
1023 return 0;
1024 }
1025
1026 switch (pbdev->state) {
1027 case ZPCI_FS_RESERVED:
1028 case ZPCI_FS_STANDBY:
1029 case ZPCI_FS_DISABLED:
1030 case ZPCI_FS_PERMANENT_ERROR:
1031 setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
1032 return 0;
1033 default:
1034 break;
1035 }
1036
1037 if (s390_cpu_virt_mem_read(cpu, fiba, ar, (uint8_t *)&fib, sizeof(fib))) {
1038 s390_cpu_virt_mem_handle_exc(cpu, ra);
1039 return 0;
1040 }
1041
1042 if (fib.fmt != 0) {
1043 s390_program_interrupt(env, PGM_OPERAND, ra);
1044 return 0;
1045 }
1046
1047 switch (oc) {
1048 case ZPCI_MOD_FC_REG_INT:
1049 if (pbdev->summary_ind) {
1050 cc = ZPCI_PCI_LS_ERR;
1051 s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
1052 } else if (reg_irqs(env, pbdev, fib)) {
1053 cc = ZPCI_PCI_LS_ERR;
1054 s390_set_status_code(env, r1, ZPCI_MOD_ST_RES_NOT_AVAIL);
1055 }
1056 break;
1057 case ZPCI_MOD_FC_DEREG_INT:
1058 if (!pbdev->summary_ind) {
1059 cc = ZPCI_PCI_LS_ERR;
1060 s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
1061 } else {
1062 pci_dereg_irqs(pbdev);
1063 }
1064 break;
1065 case ZPCI_MOD_FC_REG_IOAT:
1066 if (dmaas != 0) {
1067 cc = ZPCI_PCI_LS_ERR;
1068 s390_set_status_code(env, r1, ZPCI_MOD_ST_DMAAS_INVAL);
1069 } else if (pbdev->iommu->enabled) {
1070 cc = ZPCI_PCI_LS_ERR;
1071 s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
1072 } else if (reg_ioat(env, pbdev->iommu, fib, ra)) {
1073 cc = ZPCI_PCI_LS_ERR;
1074 s390_set_status_code(env, r1, ZPCI_MOD_ST_INSUF_RES);
1075 }
1076 break;
1077 case ZPCI_MOD_FC_DEREG_IOAT:
1078 if (dmaas != 0) {
1079 cc = ZPCI_PCI_LS_ERR;
1080 s390_set_status_code(env, r1, ZPCI_MOD_ST_DMAAS_INVAL);
1081 } else if (!pbdev->iommu->enabled) {
1082 cc = ZPCI_PCI_LS_ERR;
1083 s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
1084 } else {
1085 pci_dereg_ioat(pbdev->iommu);
1086 }
1087 break;
1088 case ZPCI_MOD_FC_REREG_IOAT:
1089 if (dmaas != 0) {
1090 cc = ZPCI_PCI_LS_ERR;
1091 s390_set_status_code(env, r1, ZPCI_MOD_ST_DMAAS_INVAL);
1092 } else if (!pbdev->iommu->enabled) {
1093 cc = ZPCI_PCI_LS_ERR;
1094 s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
1095 } else {
1096 pci_dereg_ioat(pbdev->iommu);
1097 if (reg_ioat(env, pbdev->iommu, fib, ra)) {
1098 cc = ZPCI_PCI_LS_ERR;
1099 s390_set_status_code(env, r1, ZPCI_MOD_ST_INSUF_RES);
1100 }
1101 }
1102 break;
1103 case ZPCI_MOD_FC_RESET_ERROR:
1104 switch (pbdev->state) {
1105 case ZPCI_FS_BLOCKED:
1106 case ZPCI_FS_ERROR:
1107 pbdev->state = ZPCI_FS_ENABLED;
1108 break;
1109 default:
1110 cc = ZPCI_PCI_LS_ERR;
1111 s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
1112 }
1113 break;
1114 case ZPCI_MOD_FC_RESET_BLOCK:
1115 switch (pbdev->state) {
1116 case ZPCI_FS_ERROR:
1117 pbdev->state = ZPCI_FS_BLOCKED;
1118 break;
1119 default:
1120 cc = ZPCI_PCI_LS_ERR;
1121 s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
1122 }
1123 break;
1124 case ZPCI_MOD_FC_SET_MEASURE: {
1125 uint64_t fmb_addr = ldq_p(&fib.fmb_addr);
1126
1127 if (fmb_addr & FMBK_MASK) {
1128 cc = ZPCI_PCI_LS_ERR;
1129 s390_pci_generate_error_event(ERR_EVENT_FMBPRO, pbdev->fh,
1130 pbdev->fid, fmb_addr, 0);
1131 fmb_timer_free(pbdev);
1132 break;
1133 }
1134
1135 if (!fmb_addr) {
1136
1137 fmb_timer_free(pbdev);
1138 break;
1139 }
1140
1141 if (!pbdev->fmb_timer) {
1142 pbdev->fmb_timer = timer_new_ms(QEMU_CLOCK_VIRTUAL,
1143 fmb_update, pbdev);
1144 } else if (timer_pending(pbdev->fmb_timer)) {
1145
1146 timer_del(pbdev->fmb_timer);
1147 }
1148 pbdev->fmb_addr = fmb_addr;
1149 timer_mod(pbdev->fmb_timer,
1150 qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + DEFAULT_MUI);
1151 break;
1152 }
1153 default:
1154 s390_program_interrupt(&cpu->env, PGM_OPERAND, ra);
1155 cc = ZPCI_PCI_LS_ERR;
1156 }
1157
1158 setcc(cpu, cc);
1159 return 0;
1160}
1161
1162int stpcifc_service_call(S390CPU *cpu, uint8_t r1, uint64_t fiba, uint8_t ar,
1163 uintptr_t ra)
1164{
1165 CPUS390XState *env = &cpu->env;
1166 uint8_t dmaas;
1167 uint32_t fh;
1168 ZpciFib fib;
1169 S390PCIBusDevice *pbdev;
1170 uint32_t data;
1171 uint64_t cc = ZPCI_PCI_LS_OK;
1172
1173 if (env->psw.mask & PSW_MASK_PSTATE) {
1174 s390_program_interrupt(env, PGM_PRIVILEGED, ra);
1175 return 0;
1176 }
1177
1178 fh = env->regs[r1] >> 32;
1179 dmaas = (env->regs[r1] >> 16) & 0xff;
1180
1181 if (dmaas) {
1182 setcc(cpu, ZPCI_PCI_LS_ERR);
1183 s390_set_status_code(env, r1, ZPCI_STPCIFC_ST_INVAL_DMAAS);
1184 return 0;
1185 }
1186
1187 if (fiba & 0x7) {
1188 s390_program_interrupt(env, PGM_SPECIFICATION, ra);
1189 return 0;
1190 }
1191
1192 pbdev = s390_pci_find_dev_by_idx(s390_get_phb(), fh & FH_MASK_INDEX);
1193 if (!pbdev) {
1194 setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
1195 return 0;
1196 }
1197
1198 memset(&fib, 0, sizeof(fib));
1199
1200 switch (pbdev->state) {
1201 case ZPCI_FS_RESERVED:
1202 case ZPCI_FS_STANDBY:
1203 setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
1204 return 0;
1205 case ZPCI_FS_DISABLED:
1206 if (fh & FH_MASK_ENABLE) {
1207 setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
1208 return 0;
1209 }
1210 goto out;
1211
1212
1213 case ZPCI_FS_ERROR:
1214 fib.fc |= 0x20;
1215
1216 case ZPCI_FS_BLOCKED:
1217 fib.fc |= 0x40;
1218
1219 case ZPCI_FS_ENABLED:
1220 fib.fc |= 0x80;
1221 if (pbdev->iommu->enabled) {
1222 fib.fc |= 0x10;
1223 }
1224 if (!(fh & FH_MASK_ENABLE)) {
1225 env->regs[r1] |= 1ULL << 63;
1226 }
1227 break;
1228 case ZPCI_FS_PERMANENT_ERROR:
1229 setcc(cpu, ZPCI_PCI_LS_ERR);
1230 s390_set_status_code(env, r1, ZPCI_STPCIFC_ST_PERM_ERROR);
1231 return 0;
1232 }
1233
1234 stq_p(&fib.pba, pbdev->iommu->pba);
1235 stq_p(&fib.pal, pbdev->iommu->pal);
1236 stq_p(&fib.iota, pbdev->iommu->g_iota);
1237 stq_p(&fib.aibv, pbdev->routes.adapter.ind_addr);
1238 stq_p(&fib.aisb, pbdev->routes.adapter.summary_addr);
1239 stq_p(&fib.fmb_addr, pbdev->fmb_addr);
1240
1241 data = ((uint32_t)pbdev->isc << 28) | ((uint32_t)pbdev->noi << 16) |
1242 ((uint32_t)pbdev->routes.adapter.ind_offset << 8) |
1243 ((uint32_t)pbdev->sum << 7) | pbdev->routes.adapter.summary_offset;
1244 stl_p(&fib.data, data);
1245
1246out:
1247 if (s390_cpu_virt_mem_write(cpu, fiba, ar, (uint8_t *)&fib, sizeof(fib))) {
1248 s390_cpu_virt_mem_handle_exc(cpu, ra);
1249 return 0;
1250 }
1251
1252 setcc(cpu, cc);
1253 return 0;
1254}
1255
