]>
Commit | Line | Data |
---|---|---|
8cba80c3 FB |
1 | /* |
2 | * s390 PCI BUS | |
3 | * | |
4 | * Copyright 2014 IBM Corp. | |
5 | * Author(s): Frank Blaschka <frank.blaschka@de.ibm.com> | |
6 | * Hong Bo Li <lihbbj@cn.ibm.com> | |
7 | * Yi Min Zhao <zyimin@cn.ibm.com> | |
8 | * | |
9 | * This work is licensed under the terms of the GNU GPL, version 2 or (at | |
10 | * your option) any later version. See the COPYING file in the top-level | |
11 | * directory. | |
12 | */ | |
13 | ||
9615495a | 14 | #include "qemu/osdep.h" |
3e5cfba3 YMZ |
15 | #include "qapi/error.h" |
16 | #include "qapi/visitor.h" | |
4771d756 PB |
17 | #include "qemu-common.h" |
18 | #include "cpu.h" | |
8cba80c3 | 19 | #include "s390-pci-bus.h" |
259a4f0a | 20 | #include "s390-pci-inst.h" |
a9c94277 | 21 | #include "hw/pci/pci_bus.h" |
3fc92a24 | 22 | #include "hw/pci/pci_bridge.h" |
a9c94277 MA |
23 | #include "hw/pci/msi.h" |
24 | #include "qemu/error-report.h" | |
8cba80c3 | 25 | |
229913f0 DA |
26 | #ifndef DEBUG_S390PCI_BUS |
27 | #define DEBUG_S390PCI_BUS 0 | |
8cba80c3 FB |
28 | #endif |
29 | ||
229913f0 DA |
30 | #define DPRINTF(fmt, ...) \ |
31 | do { \ | |
32 | if (DEBUG_S390PCI_BUS) { \ | |
33 | fprintf(stderr, "S390pci-bus: " fmt, ## __VA_ARGS__); \ | |
34 | } \ | |
35 | } while (0) | |
36 | ||
a975a24a | 37 | S390pciState *s390_get_phb(void) |
e7d33695 YMZ |
38 | { |
39 | static S390pciState *phb; | |
40 | ||
41 | if (!phb) { | |
42 | phb = S390_PCI_HOST_BRIDGE( | |
43 | object_resolve_path(TYPE_S390_PCI_HOST_BRIDGE, NULL)); | |
44 | assert(phb != NULL); | |
45 | } | |
46 | ||
47 | return phb; | |
48 | } | |
49 | ||
1c5deaec | 50 | int pci_chsc_sei_nt2_get_event(void *res) |
8cba80c3 FB |
51 | { |
52 | ChscSeiNt2Res *nt2_res = (ChscSeiNt2Res *)res; | |
53 | PciCcdfAvail *accdf; | |
54 | PciCcdfErr *eccdf; | |
55 | int rc = 1; | |
56 | SeiContainer *sei_cont; | |
e7d33695 | 57 | S390pciState *s = s390_get_phb(); |
8cba80c3 FB |
58 | |
59 | sei_cont = QTAILQ_FIRST(&s->pending_sei); | |
60 | if (sei_cont) { | |
61 | QTAILQ_REMOVE(&s->pending_sei, sei_cont, link); | |
62 | nt2_res->nt = 2; | |
63 | nt2_res->cc = sei_cont->cc; | |
d3321fc7 | 64 | nt2_res->length = cpu_to_be16(sizeof(ChscSeiNt2Res)); |
8cba80c3 FB |
65 | switch (sei_cont->cc) { |
66 | case 1: /* error event */ | |
67 | eccdf = (PciCcdfErr *)nt2_res->ccdf; | |
68 | eccdf->fid = cpu_to_be32(sei_cont->fid); | |
69 | eccdf->fh = cpu_to_be32(sei_cont->fh); | |
70 | eccdf->e = cpu_to_be32(sei_cont->e); | |
71 | eccdf->faddr = cpu_to_be64(sei_cont->faddr); | |
72 | eccdf->pec = cpu_to_be16(sei_cont->pec); | |
73 | break; | |
74 | case 2: /* availability event */ | |
75 | accdf = (PciCcdfAvail *)nt2_res->ccdf; | |
76 | accdf->fid = cpu_to_be32(sei_cont->fid); | |
77 | accdf->fh = cpu_to_be32(sei_cont->fh); | |
78 | accdf->pec = cpu_to_be16(sei_cont->pec); | |
79 | break; | |
80 | default: | |
81 | abort(); | |
82 | } | |
83 | g_free(sei_cont); | |
84 | rc = 0; | |
85 | } | |
86 | ||
87 | return rc; | |
88 | } | |
89 | ||
1c5deaec | 90 | int pci_chsc_sei_nt2_have_event(void) |
8cba80c3 | 91 | { |
e7d33695 | 92 | S390pciState *s = s390_get_phb(); |
8cba80c3 FB |
93 | |
94 | return !QTAILQ_EMPTY(&s->pending_sei); | |
95 | } | |
96 | ||
a975a24a YMZ |
97 | S390PCIBusDevice *s390_pci_find_next_avail_dev(S390pciState *s, |
98 | S390PCIBusDevice *pbdev) | |
4e3bfc16 | 99 | { |
e70377df PM |
100 | S390PCIBusDevice *ret = pbdev ? QTAILQ_NEXT(pbdev, link) : |
101 | QTAILQ_FIRST(&s->zpci_devs); | |
4e3bfc16 | 102 | |
e70377df PM |
103 | while (ret && ret->state == ZPCI_FS_RESERVED) { |
104 | ret = QTAILQ_NEXT(ret, link); | |
4e3bfc16 YMZ |
105 | } |
106 | ||
e70377df | 107 | return ret; |
4e3bfc16 YMZ |
108 | } |
109 | ||
a975a24a | 110 | S390PCIBusDevice *s390_pci_find_dev_by_fid(S390pciState *s, uint32_t fid) |
8cba80c3 FB |
111 | { |
112 | S390PCIBusDevice *pbdev; | |
8cba80c3 | 113 | |
e70377df PM |
114 | QTAILQ_FOREACH(pbdev, &s->zpci_devs, link) { |
115 | if (pbdev->fid == fid) { | |
8cba80c3 FB |
116 | return pbdev; |
117 | } | |
118 | } | |
119 | ||
120 | return NULL; | |
121 | } | |
122 | ||
8f5cb693 | 123 | void s390_pci_sclp_configure(SCCB *sccb) |
8cba80c3 | 124 | { |
80b7a265 | 125 | IoaCfgSccb *psccb = (IoaCfgSccb *)sccb; |
a975a24a YMZ |
126 | S390PCIBusDevice *pbdev = s390_pci_find_dev_by_fid(s390_get_phb(), |
127 | be32_to_cpu(psccb->aid)); | |
8cba80c3 FB |
128 | uint16_t rc; |
129 | ||
5d1abf23 | 130 | if (!pbdev) { |
8f5cb693 YMZ |
131 | DPRINTF("sclp config no dev found\n"); |
132 | rc = SCLP_RC_ADAPTER_ID_NOT_RECOGNIZED; | |
5d1abf23 YMZ |
133 | goto out; |
134 | } | |
135 | ||
136 | switch (pbdev->state) { | |
137 | case ZPCI_FS_RESERVED: | |
138 | rc = SCLP_RC_ADAPTER_IN_RESERVED_STATE; | |
139 | break; | |
140 | case ZPCI_FS_STANDBY: | |
141 | pbdev->state = ZPCI_FS_DISABLED; | |
142 | rc = SCLP_RC_NORMAL_COMPLETION; | |
143 | break; | |
144 | default: | |
145 | rc = SCLP_RC_NO_ACTION_REQUIRED; | |
8f5cb693 | 146 | } |
3b40ea29 | 147 | out: |
8f5cb693 YMZ |
148 | psccb->header.response_code = cpu_to_be16(rc); |
149 | } | |
150 | ||
151 | void s390_pci_sclp_deconfigure(SCCB *sccb) | |
152 | { | |
80b7a265 | 153 | IoaCfgSccb *psccb = (IoaCfgSccb *)sccb; |
a975a24a YMZ |
154 | S390PCIBusDevice *pbdev = s390_pci_find_dev_by_fid(s390_get_phb(), |
155 | be32_to_cpu(psccb->aid)); | |
8f5cb693 YMZ |
156 | uint16_t rc; |
157 | ||
5d1abf23 | 158 | if (!pbdev) { |
8f5cb693 | 159 | DPRINTF("sclp deconfig no dev found\n"); |
8cba80c3 | 160 | rc = SCLP_RC_ADAPTER_ID_NOT_RECOGNIZED; |
5d1abf23 YMZ |
161 | goto out; |
162 | } | |
163 | ||
164 | switch (pbdev->state) { | |
165 | case ZPCI_FS_RESERVED: | |
166 | rc = SCLP_RC_ADAPTER_IN_RESERVED_STATE; | |
167 | break; | |
168 | case ZPCI_FS_STANDBY: | |
169 | rc = SCLP_RC_NO_ACTION_REQUIRED; | |
170 | break; | |
171 | default: | |
172 | if (pbdev->summary_ind) { | |
173 | pci_dereg_irqs(pbdev); | |
174 | } | |
de91ea92 YMZ |
175 | if (pbdev->iommu->enabled) { |
176 | pci_dereg_ioat(pbdev->iommu); | |
5d1abf23 YMZ |
177 | } |
178 | pbdev->state = ZPCI_FS_STANDBY; | |
179 | rc = SCLP_RC_NORMAL_COMPLETION; | |
93d16d81 YMZ |
180 | |
181 | if (pbdev->release_timer) { | |
182 | qdev_unplug(DEVICE(pbdev->pdev), NULL); | |
183 | } | |
8cba80c3 | 184 | } |
3b40ea29 | 185 | out: |
8cba80c3 | 186 | psccb->header.response_code = cpu_to_be16(rc); |
8cba80c3 FB |
187 | } |
188 | ||
a975a24a | 189 | static S390PCIBusDevice *s390_pci_find_dev_by_uid(S390pciState *s, uint16_t uid) |
3e5cfba3 | 190 | { |
3e5cfba3 | 191 | S390PCIBusDevice *pbdev; |
3e5cfba3 | 192 | |
e70377df | 193 | QTAILQ_FOREACH(pbdev, &s->zpci_devs, link) { |
3e5cfba3 YMZ |
194 | if (pbdev->uid == uid) { |
195 | return pbdev; | |
196 | } | |
197 | } | |
198 | ||
199 | return NULL; | |
200 | } | |
201 | ||
ceb7054f YMZ |
202 | S390PCIBusDevice *s390_pci_find_dev_by_target(S390pciState *s, |
203 | const char *target) | |
3e5cfba3 | 204 | { |
3e5cfba3 | 205 | S390PCIBusDevice *pbdev; |
3e5cfba3 YMZ |
206 | |
207 | if (!target) { | |
208 | return NULL; | |
209 | } | |
210 | ||
e70377df | 211 | QTAILQ_FOREACH(pbdev, &s->zpci_devs, link) { |
3e5cfba3 YMZ |
212 | if (!strcmp(pbdev->target, target)) { |
213 | return pbdev; | |
214 | } | |
215 | } | |
216 | ||
217 | return NULL; | |
218 | } | |
219 | ||
a975a24a | 220 | S390PCIBusDevice *s390_pci_find_dev_by_idx(S390pciState *s, uint32_t idx) |
8cba80c3 | 221 | { |
df8dd91b | 222 | return g_hash_table_lookup(s->zpci_table, &idx); |
8cba80c3 FB |
223 | } |
224 | ||
a975a24a | 225 | S390PCIBusDevice *s390_pci_find_dev_by_fh(S390pciState *s, uint32_t fh) |
8cba80c3 | 226 | { |
df8dd91b YMZ |
227 | uint32_t idx = FH_MASK_INDEX & fh; |
228 | S390PCIBusDevice *pbdev = s390_pci_find_dev_by_idx(s, idx); | |
8cba80c3 | 229 | |
df8dd91b YMZ |
230 | if (pbdev && pbdev->fh == fh) { |
231 | return pbdev; | |
8cba80c3 FB |
232 | } |
233 | ||
234 | return NULL; | |
235 | } | |
236 | ||
237 | static void s390_pci_generate_event(uint8_t cc, uint16_t pec, uint32_t fh, | |
238 | uint32_t fid, uint64_t faddr, uint32_t e) | |
239 | { | |
b7022d9a | 240 | SeiContainer *sei_cont; |
e7d33695 | 241 | S390pciState *s = s390_get_phb(); |
8cba80c3 | 242 | |
96f64aa8 | 243 | sei_cont = g_new0(SeiContainer, 1); |
8cba80c3 FB |
244 | sei_cont->fh = fh; |
245 | sei_cont->fid = fid; | |
246 | sei_cont->cc = cc; | |
247 | sei_cont->pec = pec; | |
248 | sei_cont->faddr = faddr; | |
249 | sei_cont->e = e; | |
250 | ||
251 | QTAILQ_INSERT_TAIL(&s->pending_sei, sei_cont, link); | |
252 | css_generate_css_crws(0); | |
253 | } | |
254 | ||
255 | static void s390_pci_generate_plug_event(uint16_t pec, uint32_t fh, | |
256 | uint32_t fid) | |
257 | { | |
258 | s390_pci_generate_event(2, pec, fh, fid, 0, 0); | |
259 | } | |
260 | ||
5d1abf23 YMZ |
261 | void s390_pci_generate_error_event(uint16_t pec, uint32_t fh, uint32_t fid, |
262 | uint64_t faddr, uint32_t e) | |
8cba80c3 FB |
263 | { |
264 | s390_pci_generate_event(1, pec, fh, fid, faddr, e); | |
265 | } | |
266 | ||
267 | static void s390_pci_set_irq(void *opaque, int irq, int level) | |
268 | { | |
269 | /* nothing to do */ | |
270 | } | |
271 | ||
272 | static int s390_pci_map_irq(PCIDevice *pci_dev, int irq_num) | |
273 | { | |
274 | /* nothing to do */ | |
275 | return 0; | |
276 | } | |
277 | ||
278 | static uint64_t s390_pci_get_table_origin(uint64_t iota) | |
279 | { | |
280 | return iota & ~ZPCI_IOTA_RTTO_FLAG; | |
281 | } | |
282 | ||
283 | static unsigned int calc_rtx(dma_addr_t ptr) | |
284 | { | |
285 | return ((unsigned long) ptr >> ZPCI_RT_SHIFT) & ZPCI_INDEX_MASK; | |
286 | } | |
287 | ||
288 | static unsigned int calc_sx(dma_addr_t ptr) | |
289 | { | |
290 | return ((unsigned long) ptr >> ZPCI_ST_SHIFT) & ZPCI_INDEX_MASK; | |
291 | } | |
292 | ||
293 | static unsigned int calc_px(dma_addr_t ptr) | |
294 | { | |
295 | return ((unsigned long) ptr >> PAGE_SHIFT) & ZPCI_PT_MASK; | |
296 | } | |
297 | ||
298 | static uint64_t get_rt_sto(uint64_t entry) | |
299 | { | |
300 | return ((entry & ZPCI_TABLE_TYPE_MASK) == ZPCI_TABLE_TYPE_RTX) | |
301 | ? (entry & ZPCI_RTE_ADDR_MASK) | |
302 | : 0; | |
303 | } | |
304 | ||
305 | static uint64_t get_st_pto(uint64_t entry) | |
306 | { | |
307 | return ((entry & ZPCI_TABLE_TYPE_MASK) == ZPCI_TABLE_TYPE_SX) | |
308 | ? (entry & ZPCI_STE_ADDR_MASK) | |
309 | : 0; | |
310 | } | |
311 | ||
0125861e YMZ |
312 | static bool rt_entry_isvalid(uint64_t entry) |
313 | { | |
314 | return (entry & ZPCI_TABLE_VALID_MASK) == ZPCI_TABLE_VALID; | |
315 | } | |
316 | ||
317 | static bool pt_entry_isvalid(uint64_t entry) | |
318 | { | |
319 | return (entry & ZPCI_PTE_VALID_MASK) == ZPCI_PTE_VALID; | |
320 | } | |
321 | ||
322 | static bool entry_isprotected(uint64_t entry) | |
323 | { | |
324 | return (entry & ZPCI_TABLE_PROT_MASK) == ZPCI_TABLE_PROTECTED; | |
325 | } | |
326 | ||
327 | /* ett is expected table type, -1 page table, 0 segment table, 1 region table */ | |
328 | static uint64_t get_table_index(uint64_t iova, int8_t ett) | |
329 | { | |
330 | switch (ett) { | |
331 | case ZPCI_ETT_PT: | |
332 | return calc_px(iova); | |
333 | case ZPCI_ETT_ST: | |
334 | return calc_sx(iova); | |
335 | case ZPCI_ETT_RT: | |
336 | return calc_rtx(iova); | |
337 | } | |
338 | ||
339 | return -1; | |
340 | } | |
341 | ||
342 | static bool entry_isvalid(uint64_t entry, int8_t ett) | |
343 | { | |
344 | switch (ett) { | |
345 | case ZPCI_ETT_PT: | |
346 | return pt_entry_isvalid(entry); | |
347 | case ZPCI_ETT_ST: | |
348 | case ZPCI_ETT_RT: | |
349 | return rt_entry_isvalid(entry); | |
350 | } | |
351 | ||
352 | return false; | |
353 | } | |
354 | ||
355 | /* Return true if address translation is done */ | |
356 | static bool translate_iscomplete(uint64_t entry, int8_t ett) | |
357 | { | |
358 | switch (ett) { | |
359 | case 0: | |
360 | return (entry & ZPCI_TABLE_FC) ? true : false; | |
361 | case 1: | |
362 | return false; | |
363 | } | |
364 | ||
365 | return true; | |
366 | } | |
367 | ||
368 | static uint64_t get_frame_size(int8_t ett) | |
369 | { | |
370 | switch (ett) { | |
371 | case ZPCI_ETT_PT: | |
372 | return 1ULL << 12; | |
373 | case ZPCI_ETT_ST: | |
374 | return 1ULL << 20; | |
375 | case ZPCI_ETT_RT: | |
376 | return 1ULL << 31; | |
377 | } | |
378 | ||
379 | return 0; | |
380 | } | |
381 | ||
382 | static uint64_t get_next_table_origin(uint64_t entry, int8_t ett) | |
383 | { | |
384 | switch (ett) { | |
385 | case ZPCI_ETT_PT: | |
386 | return entry & ZPCI_PTE_ADDR_MASK; | |
387 | case ZPCI_ETT_ST: | |
388 | return get_st_pto(entry); | |
389 | case ZPCI_ETT_RT: | |
390 | return get_rt_sto(entry); | |
391 | } | |
392 | ||
393 | return 0; | |
394 | } | |
395 | ||
396 | /** | |
397 | * table_translate: do translation within one table and return the following | |
398 | * table origin | |
399 | * | |
400 | * @entry: the entry being translated, the result is stored in this. | |
401 | * @to: the address of table origin. | |
402 | * @ett: expected table type, 1 region table, 0 segment table and -1 page table. | |
403 | * @error: error code | |
404 | */ | |
405 | static uint64_t table_translate(S390IOTLBEntry *entry, uint64_t to, int8_t ett, | |
406 | uint16_t *error) | |
407 | { | |
408 | uint64_t tx, te, nto = 0; | |
409 | uint16_t err = 0; | |
410 | ||
411 | tx = get_table_index(entry->iova, ett); | |
412 | te = address_space_ldq(&address_space_memory, to + tx * sizeof(uint64_t), | |
413 | MEMTXATTRS_UNSPECIFIED, NULL); | |
414 | ||
415 | if (!te) { | |
416 | err = ERR_EVENT_INVALTE; | |
8cba80c3 FB |
417 | goto out; |
418 | } | |
419 | ||
0125861e YMZ |
420 | if (!entry_isvalid(te, ett)) { |
421 | entry->perm &= IOMMU_NONE; | |
8cba80c3 FB |
422 | goto out; |
423 | } | |
424 | ||
0125861e YMZ |
425 | if (ett == ZPCI_ETT_RT && ((te & ZPCI_TABLE_LEN_RTX) != ZPCI_TABLE_LEN_RTX |
426 | || te & ZPCI_TABLE_OFFSET_MASK)) { | |
427 | err = ERR_EVENT_INVALTL; | |
428 | goto out; | |
429 | } | |
8cba80c3 | 430 | |
0125861e YMZ |
431 | nto = get_next_table_origin(te, ett); |
432 | if (!nto) { | |
433 | err = ERR_EVENT_TT; | |
434 | goto out; | |
435 | } | |
436 | ||
437 | if (entry_isprotected(te)) { | |
438 | entry->perm &= IOMMU_RO; | |
439 | } else { | |
440 | entry->perm &= IOMMU_RW; | |
441 | } | |
442 | ||
443 | if (translate_iscomplete(te, ett)) { | |
444 | switch (ett) { | |
445 | case ZPCI_ETT_PT: | |
446 | entry->translated_addr = te & ZPCI_PTE_ADDR_MASK; | |
447 | break; | |
448 | case ZPCI_ETT_ST: | |
449 | entry->translated_addr = (te & ZPCI_SFAA_MASK) | | |
450 | (entry->iova & ~ZPCI_SFAA_MASK); | |
451 | break; | |
452 | } | |
453 | nto = 0; | |
454 | } | |
8cba80c3 | 455 | out: |
0125861e YMZ |
456 | if (err) { |
457 | entry->perm = IOMMU_NONE; | |
458 | *error = err; | |
459 | } | |
460 | entry->len = get_frame_size(ett); | |
461 | return nto; | |
462 | } | |
463 | ||
464 | uint16_t s390_guest_io_table_walk(uint64_t g_iota, hwaddr addr, | |
465 | S390IOTLBEntry *entry) | |
466 | { | |
467 | uint64_t to = s390_pci_get_table_origin(g_iota); | |
468 | int8_t ett = 1; | |
469 | uint16_t error = 0; | |
470 | ||
471 | entry->iova = addr & PAGE_MASK; | |
472 | entry->translated_addr = 0; | |
473 | entry->perm = IOMMU_RW; | |
474 | ||
475 | if (entry_isprotected(g_iota)) { | |
476 | entry->perm &= IOMMU_RO; | |
477 | } | |
478 | ||
479 | while (to) { | |
480 | to = table_translate(entry, to, ett--, &error); | |
481 | } | |
482 | ||
483 | return error; | |
8cba80c3 FB |
484 | } |
485 | ||
3df9d748 | 486 | static IOMMUTLBEntry s390_translate_iommu(IOMMUMemoryRegion *mr, hwaddr addr, |
2c91bcf2 | 487 | IOMMUAccessFlags flag, int iommu_idx) |
8cba80c3 | 488 | { |
de91ea92 | 489 | S390PCIIOMMU *iommu = container_of(mr, S390PCIIOMMU, iommu_mr); |
b3f05d8c YMZ |
490 | S390IOTLBEntry *entry; |
491 | uint64_t iova = addr & PAGE_MASK; | |
0125861e | 492 | uint16_t error = 0; |
8cba80c3 FB |
493 | IOMMUTLBEntry ret = { |
494 | .target_as = &address_space_memory, | |
495 | .iova = 0, | |
496 | .translated_addr = 0, | |
497 | .addr_mask = ~(hwaddr)0, | |
498 | .perm = IOMMU_NONE, | |
499 | }; | |
500 | ||
de91ea92 | 501 | switch (iommu->pbdev->state) { |
5d1abf23 YMZ |
502 | case ZPCI_FS_ENABLED: |
503 | case ZPCI_FS_BLOCKED: | |
de91ea92 | 504 | if (!iommu->enabled) { |
5d1abf23 YMZ |
505 | return ret; |
506 | } | |
507 | break; | |
508 | default: | |
dce1b089 YMZ |
509 | return ret; |
510 | } | |
511 | ||
8cba80c3 FB |
512 | DPRINTF("iommu trans addr 0x%" PRIx64 "\n", addr); |
513 | ||
de91ea92 | 514 | if (addr < iommu->pba || addr > iommu->pal) { |
0125861e YMZ |
515 | error = ERR_EVENT_OORANGE; |
516 | goto err; | |
8cba80c3 FB |
517 | } |
518 | ||
b3f05d8c YMZ |
519 | entry = g_hash_table_lookup(iommu->iotlb, &iova); |
520 | if (entry) { | |
521 | ret.iova = entry->iova; | |
522 | ret.translated_addr = entry->translated_addr; | |
523 | ret.addr_mask = entry->len - 1; | |
524 | ret.perm = entry->perm; | |
525 | } else { | |
526 | ret.iova = iova; | |
527 | ret.addr_mask = ~PAGE_MASK; | |
528 | ret.perm = IOMMU_NONE; | |
529 | } | |
8cba80c3 | 530 | |
0125861e YMZ |
531 | if (flag != IOMMU_NONE && !(flag & ret.perm)) { |
532 | error = ERR_EVENT_TPROTE; | |
533 | } | |
534 | err: | |
535 | if (error) { | |
536 | iommu->pbdev->state = ZPCI_FS_ERROR; | |
537 | s390_pci_generate_error_event(error, iommu->pbdev->fh, | |
538 | iommu->pbdev->fid, addr, 0); | |
8cba80c3 | 539 | } |
8cba80c3 FB |
540 | return ret; |
541 | } | |
542 | ||
6c5e7402 YMZ |
543 | static void s390_pci_iommu_replay(IOMMUMemoryRegion *iommu, |
544 | IOMMUNotifier *notifier) | |
545 | { | |
546 | /* It's impossible to plug a pci device on s390x that already has iommu | |
547 | * mappings which need to be replayed, that is due to the "one iommu per | |
548 | * zpci device" construct. But when we support migration of vfio-pci | |
549 | * devices in future, we need to revisit this. | |
550 | */ | |
551 | return; | |
552 | } | |
553 | ||
03805be0 YMZ |
554 | static S390PCIIOMMU *s390_pci_get_iommu(S390pciState *s, PCIBus *bus, |
555 | int devfn) | |
556 | { | |
557 | uint64_t key = (uintptr_t)bus; | |
558 | S390PCIIOMMUTable *table = g_hash_table_lookup(s->iommu_table, &key); | |
559 | S390PCIIOMMU *iommu; | |
560 | ||
561 | if (!table) { | |
96f64aa8 | 562 | table = g_new0(S390PCIIOMMUTable, 1); |
03805be0 YMZ |
563 | table->key = key; |
564 | g_hash_table_insert(s->iommu_table, &table->key, table); | |
565 | } | |
566 | ||
567 | iommu = table->iommu[PCI_SLOT(devfn)]; | |
568 | if (!iommu) { | |
569 | iommu = S390_PCI_IOMMU(object_new(TYPE_S390_PCI_IOMMU)); | |
570 | ||
571 | char *mr_name = g_strdup_printf("iommu-root-%02x:%02x.%01x", | |
572 | pci_bus_num(bus), | |
573 | PCI_SLOT(devfn), | |
574 | PCI_FUNC(devfn)); | |
575 | char *as_name = g_strdup_printf("iommu-pci-%02x:%02x.%01x", | |
576 | pci_bus_num(bus), | |
577 | PCI_SLOT(devfn), | |
578 | PCI_FUNC(devfn)); | |
579 | memory_region_init(&iommu->mr, OBJECT(iommu), mr_name, UINT64_MAX); | |
580 | address_space_init(&iommu->as, &iommu->mr, as_name); | |
b3f05d8c YMZ |
581 | iommu->iotlb = g_hash_table_new_full(g_int64_hash, g_int64_equal, |
582 | NULL, g_free); | |
03805be0 YMZ |
583 | table->iommu[PCI_SLOT(devfn)] = iommu; |
584 | ||
585 | g_free(mr_name); | |
586 | g_free(as_name); | |
587 | } | |
588 | ||
589 | return iommu; | |
590 | } | |
591 | ||
8cba80c3 FB |
592 | static AddressSpace *s390_pci_dma_iommu(PCIBus *bus, void *opaque, int devfn) |
593 | { | |
594 | S390pciState *s = opaque; | |
03805be0 | 595 | S390PCIIOMMU *iommu = s390_pci_get_iommu(s, bus, devfn); |
8cba80c3 | 596 | |
03805be0 | 597 | return &iommu->as; |
8cba80c3 FB |
598 | } |
599 | ||
600 | static uint8_t set_ind_atomic(uint64_t ind_loc, uint8_t to_be_set) | |
601 | { | |
602 | uint8_t ind_old, ind_new; | |
603 | hwaddr len = 1; | |
604 | uint8_t *ind_addr; | |
605 | ||
606 | ind_addr = cpu_physical_memory_map(ind_loc, &len, 1); | |
607 | if (!ind_addr) { | |
608 | s390_pci_generate_error_event(ERR_EVENT_AIRERR, 0, 0, 0, 0); | |
609 | return -1; | |
610 | } | |
611 | do { | |
612 | ind_old = *ind_addr; | |
613 | ind_new = ind_old | to_be_set; | |
614 | } while (atomic_cmpxchg(ind_addr, ind_old, ind_new) != ind_old); | |
615 | cpu_physical_memory_unmap(ind_addr, len, 1, len); | |
616 | ||
617 | return ind_old; | |
618 | } | |
619 | ||
620 | static void s390_msi_ctrl_write(void *opaque, hwaddr addr, uint64_t data, | |
621 | unsigned int size) | |
622 | { | |
8f955950 | 623 | S390PCIBusDevice *pbdev = opaque; |
8cba80c3 FB |
624 | uint32_t vec = data & ZPCI_MSI_VEC_MASK; |
625 | uint64_t ind_bit; | |
626 | uint32_t sum_bit; | |
8cba80c3 | 627 | |
ceb7054f YMZ |
628 | assert(pbdev); |
629 | DPRINTF("write_msix data 0x%" PRIx64 " idx %d vec 0x%x\n", data, | |
630 | pbdev->idx, vec); | |
8cba80c3 | 631 | |
5d1abf23 | 632 | if (pbdev->state != ZPCI_FS_ENABLED) { |
3be5c207 YMZ |
633 | return; |
634 | } | |
635 | ||
8cba80c3 FB |
636 | ind_bit = pbdev->routes.adapter.ind_offset; |
637 | sum_bit = pbdev->routes.adapter.summary_offset; | |
638 | ||
639 | set_ind_atomic(pbdev->routes.adapter.ind_addr + (ind_bit + vec) / 8, | |
640 | 0x80 >> ((ind_bit + vec) % 8)); | |
641 | if (!set_ind_atomic(pbdev->routes.adapter.summary_addr + sum_bit / 8, | |
642 | 0x80 >> (sum_bit % 8))) { | |
25a08b8d | 643 | css_adapter_interrupt(CSS_IO_ADAPTER_PCI, pbdev->isc); |
8cba80c3 | 644 | } |
8cba80c3 FB |
645 | } |
646 | ||
647 | static uint64_t s390_msi_ctrl_read(void *opaque, hwaddr addr, unsigned size) | |
648 | { | |
649 | return 0xffffffff; | |
650 | } | |
651 | ||
652 | static const MemoryRegionOps s390_msi_ctrl_ops = { | |
653 | .write = s390_msi_ctrl_write, | |
654 | .read = s390_msi_ctrl_read, | |
655 | .endianness = DEVICE_LITTLE_ENDIAN, | |
656 | }; | |
657 | ||
de91ea92 | 658 | void s390_pci_iommu_enable(S390PCIIOMMU *iommu) |
f0a399db | 659 | { |
de91ea92 | 660 | char *name = g_strdup_printf("iommu-s390-%04x", iommu->pbdev->uid); |
1221a474 AK |
661 | memory_region_init_iommu(&iommu->iommu_mr, sizeof(iommu->iommu_mr), |
662 | TYPE_S390_IOMMU_MEMORY_REGION, OBJECT(&iommu->mr), | |
dbe9cf60 | 663 | name, iommu->pal - iommu->pba + 1); |
de91ea92 | 664 | iommu->enabled = true; |
3df9d748 | 665 | memory_region_add_subregion(&iommu->mr, 0, MEMORY_REGION(&iommu->iommu_mr)); |
de91ea92 | 666 | g_free(name); |
71583888 | 667 | } |
f0a399db | 668 | |
de91ea92 | 669 | void s390_pci_iommu_disable(S390PCIIOMMU *iommu) |
71583888 | 670 | { |
de91ea92 | 671 | iommu->enabled = false; |
b3f05d8c | 672 | g_hash_table_remove_all(iommu->iotlb); |
3df9d748 | 673 | memory_region_del_subregion(&iommu->mr, MEMORY_REGION(&iommu->iommu_mr)); |
de91ea92 | 674 | object_unparent(OBJECT(&iommu->iommu_mr)); |
f0a399db YMZ |
675 | } |
676 | ||
a975a24a | 677 | static void s390_pci_iommu_free(S390pciState *s, PCIBus *bus, int32_t devfn) |
8cba80c3 | 678 | { |
03805be0 YMZ |
679 | uint64_t key = (uintptr_t)bus; |
680 | S390PCIIOMMUTable *table = g_hash_table_lookup(s->iommu_table, &key); | |
681 | S390PCIIOMMU *iommu = table ? table->iommu[PCI_SLOT(devfn)] : NULL; | |
8cba80c3 | 682 | |
03805be0 YMZ |
683 | if (!table || !iommu) { |
684 | return; | |
8cba80c3 | 685 | } |
03805be0 YMZ |
686 | |
687 | table->iommu[PCI_SLOT(devfn)] = NULL; | |
b3f05d8c | 688 | g_hash_table_destroy(iommu->iotlb); |
03805be0 YMZ |
689 | address_space_destroy(&iommu->as); |
690 | object_unparent(OBJECT(&iommu->mr)); | |
691 | object_unparent(OBJECT(iommu)); | |
692 | object_unref(OBJECT(iommu)); | |
8cba80c3 FB |
693 | } |
694 | ||
b576d582 | 695 | static void s390_pcihost_realize(DeviceState *dev, Error **errp) |
8cba80c3 FB |
696 | { |
697 | PCIBus *b; | |
698 | BusState *bus; | |
699 | PCIHostState *phb = PCI_HOST_BRIDGE(dev); | |
700 | S390pciState *s = S390_PCI_HOST_BRIDGE(dev); | |
b576d582 | 701 | Error *local_err = NULL; |
8cba80c3 FB |
702 | |
703 | DPRINTF("host_init\n"); | |
704 | ||
b576d582 TH |
705 | b = pci_register_root_bus(dev, NULL, s390_pci_set_irq, s390_pci_map_irq, |
706 | NULL, get_system_memory(), get_system_io(), 0, | |
707 | 64, TYPE_PCI_BUS); | |
8cba80c3 FB |
708 | pci_setup_iommu(b, s390_pci_dma_iommu, s); |
709 | ||
710 | bus = BUS(b); | |
b576d582 TH |
711 | qbus_set_hotplug_handler(bus, dev, &local_err); |
712 | if (local_err) { | |
713 | error_propagate(errp, local_err); | |
714 | return; | |
715 | } | |
8cba80c3 | 716 | phb->bus = b; |
90a0f9af | 717 | |
b576d582 TH |
718 | s->bus = S390_PCI_BUS(qbus_create(TYPE_S390_PCI_BUS, dev, NULL)); |
719 | qbus_set_hotplug_handler(BUS(s->bus), dev, &local_err); | |
720 | if (local_err) { | |
721 | error_propagate(errp, local_err); | |
722 | return; | |
723 | } | |
90a0f9af | 724 | |
03805be0 YMZ |
725 | s->iommu_table = g_hash_table_new_full(g_int64_hash, g_int64_equal, |
726 | NULL, g_free); | |
df8dd91b | 727 | s->zpci_table = g_hash_table_new_full(g_int_hash, g_int_equal, NULL, NULL); |
d2f07120 | 728 | s->bus_no = 0; |
8cba80c3 | 729 | QTAILQ_INIT(&s->pending_sei); |
e70377df | 730 | QTAILQ_INIT(&s->zpci_devs); |
dde522bb | 731 | |
1497c160 | 732 | css_register_io_adapters(CSS_IO_ADAPTER_PCI, true, false, |
b576d582 | 733 | S390_ADAPTER_SUPPRESSIBLE, &local_err); |
b2322003 | 734 | error_propagate(errp, local_err); |
8cba80c3 FB |
735 | } |
736 | ||
857cc719 | 737 | static int s390_pci_msix_init(S390PCIBusDevice *pbdev) |
8cba80c3 | 738 | { |
857cc719 | 739 | char *name; |
8cba80c3 FB |
740 | uint8_t pos; |
741 | uint16_t ctrl; | |
742 | uint32_t table, pba; | |
743 | ||
744 | pos = pci_find_capability(pbdev->pdev, PCI_CAP_ID_MSIX); | |
745 | if (!pos) { | |
857cc719 | 746 | return -1; |
8cba80c3 FB |
747 | } |
748 | ||
ce1307e1 | 749 | ctrl = pci_host_config_read_common(pbdev->pdev, pos + PCI_MSIX_FLAGS, |
8cba80c3 FB |
750 | pci_config_size(pbdev->pdev), sizeof(ctrl)); |
751 | table = pci_host_config_read_common(pbdev->pdev, pos + PCI_MSIX_TABLE, | |
752 | pci_config_size(pbdev->pdev), sizeof(table)); | |
753 | pba = pci_host_config_read_common(pbdev->pdev, pos + PCI_MSIX_PBA, | |
754 | pci_config_size(pbdev->pdev), sizeof(pba)); | |
755 | ||
756 | pbdev->msix.table_bar = table & PCI_MSIX_FLAGS_BIRMASK; | |
757 | pbdev->msix.table_offset = table & ~PCI_MSIX_FLAGS_BIRMASK; | |
758 | pbdev->msix.pba_bar = pba & PCI_MSIX_FLAGS_BIRMASK; | |
759 | pbdev->msix.pba_offset = pba & ~PCI_MSIX_FLAGS_BIRMASK; | |
760 | pbdev->msix.entries = (ctrl & PCI_MSIX_FLAGS_QSIZE) + 1; | |
8f955950 YMZ |
761 | |
762 | name = g_strdup_printf("msix-s390-%04x", pbdev->uid); | |
8f955950 YMZ |
763 | memory_region_init_io(&pbdev->msix_notify_mr, OBJECT(pbdev), |
764 | &s390_msi_ctrl_ops, pbdev, name, PAGE_SIZE); | |
765 | memory_region_add_subregion(&pbdev->iommu->mr, ZPCI_MSI_ADDR, | |
766 | &pbdev->msix_notify_mr); | |
8f955950 | 767 | g_free(name); |
857cc719 YMZ |
768 | |
769 | return 0; | |
8f955950 YMZ |
770 | } |
771 | ||
772 | static void s390_pci_msix_free(S390PCIBusDevice *pbdev) | |
773 | { | |
774 | memory_region_del_subregion(&pbdev->iommu->mr, &pbdev->msix_notify_mr); | |
775 | object_unparent(OBJECT(&pbdev->msix_notify_mr)); | |
776 | } | |
777 | ||
a975a24a | 778 | static S390PCIBusDevice *s390_pci_device_new(S390pciState *s, |
b6e67ecc | 779 | const char *target, Error **errp) |
3e5cfba3 | 780 | { |
b6e67ecc DH |
781 | Error *local_err = NULL; |
782 | DeviceState *dev; | |
3e5cfba3 YMZ |
783 | |
784 | dev = qdev_try_create(BUS(s->bus), TYPE_S390_PCI_DEVICE); | |
785 | if (!dev) { | |
b6e67ecc | 786 | error_setg(errp, "zPCI device could not be created"); |
3e5cfba3 YMZ |
787 | return NULL; |
788 | } | |
789 | ||
b6e67ecc DH |
790 | object_property_set_str(OBJECT(dev), target, "target", &local_err); |
791 | if (local_err) { | |
792 | object_unparent(OBJECT(dev)); | |
793 | error_propagate_prepend(errp, local_err, | |
794 | "zPCI device could not be created: "); | |
795 | return NULL; | |
796 | } | |
797 | object_property_set_bool(OBJECT(dev), true, "realized", &local_err); | |
798 | if (local_err) { | |
799 | object_unparent(OBJECT(dev)); | |
800 | error_propagate_prepend(errp, local_err, | |
801 | "zPCI device could not be created: "); | |
802 | return NULL; | |
803 | } | |
3e5cfba3 YMZ |
804 | |
805 | return S390_PCI_DEVICE(dev); | |
806 | } | |
807 | ||
a975a24a | 808 | static bool s390_pci_alloc_idx(S390pciState *s, S390PCIBusDevice *pbdev) |
e70377df PM |
809 | { |
810 | uint32_t idx; | |
e70377df PM |
811 | |
812 | idx = s->next_idx; | |
a975a24a | 813 | while (s390_pci_find_dev_by_idx(s, idx)) { |
e70377df PM |
814 | idx = (idx + 1) & FH_MASK_INDEX; |
815 | if (idx == s->next_idx) { | |
816 | return false; | |
817 | } | |
818 | } | |
819 | ||
820 | pbdev->idx = idx; | |
e70377df PM |
821 | return true; |
822 | } | |
823 | ||
6069bcde DH |
824 | static void s390_pcihost_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev, |
825 | Error **errp) | |
826 | { | |
827 | S390pciState *s = S390_PCI_HOST_BRIDGE(hotplug_dev); | |
828 | ||
829 | if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { | |
830 | PCIDevice *pdev = PCI_DEVICE(dev); | |
831 | ||
832 | if (pdev->cap_present & QEMU_PCI_CAP_MULTIFUNCTION) { | |
833 | error_setg(errp, "multifunction not supported in s390"); | |
834 | return; | |
835 | } | |
836 | } else if (object_dynamic_cast(OBJECT(dev), TYPE_S390_PCI_DEVICE)) { | |
837 | S390PCIBusDevice *pbdev = S390_PCI_DEVICE(dev); | |
838 | ||
839 | if (!s390_pci_alloc_idx(s, pbdev)) { | |
840 | error_setg(errp, "no slot for plugging zpci device"); | |
841 | return; | |
842 | } | |
843 | } | |
844 | } | |
845 | ||
fa2a7751 DH |
846 | static void s390_pcihost_plug(HotplugHandler *hotplug_dev, DeviceState *dev, |
847 | Error **errp) | |
8cba80c3 | 848 | { |
19375e9b | 849 | S390pciState *s = S390_PCI_HOST_BRIDGE(hotplug_dev); |
af9ed379 YMZ |
850 | PCIDevice *pdev = NULL; |
851 | S390PCIBusDevice *pbdev = NULL; | |
3e5cfba3 | 852 | |
3fc92a24 PM |
853 | if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_BRIDGE)) { |
854 | BusState *bus; | |
855 | PCIBridge *pb = PCI_BRIDGE(dev); | |
d2f07120 | 856 | PCIDevice *pdev = PCI_DEVICE(dev); |
3fc92a24 PM |
857 | |
858 | pci_bridge_map_irq(pb, dev->id, s390_pci_map_irq); | |
859 | pci_setup_iommu(&pb->sec_bus, s390_pci_dma_iommu, s); | |
860 | ||
861 | bus = BUS(&pb->sec_bus); | |
862 | qbus_set_hotplug_handler(bus, DEVICE(s), errp); | |
d2f07120 PM |
863 | |
864 | if (dev->hotplugged) { | |
865 | pci_default_write_config(pdev, PCI_PRIMARY_BUS, s->bus_no, 1); | |
866 | s->bus_no += 1; | |
867 | pci_default_write_config(pdev, PCI_SECONDARY_BUS, s->bus_no, 1); | |
868 | do { | |
fd56e061 | 869 | pdev = pci_get_bus(pdev)->parent_dev; |
d2f07120 PM |
870 | pci_default_write_config(pdev, PCI_SUBORDINATE_BUS, |
871 | s->bus_no, 1); | |
fd56e061 | 872 | } while (pci_get_bus(pdev) && pci_dev_bus_num(pdev)); |
d2f07120 | 873 | } |
3fc92a24 | 874 | } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { |
af9ed379 YMZ |
875 | pdev = PCI_DEVICE(dev); |
876 | ||
877 | if (!dev->id) { | |
878 | /* In the case the PCI device does not define an id */ | |
879 | /* we generate one based on the PCI address */ | |
880 | dev->id = g_strdup_printf("auto_%02x:%02x.%01x", | |
cdc57472 | 881 | pci_dev_bus_num(pdev), |
af9ed379 YMZ |
882 | PCI_SLOT(pdev->devfn), |
883 | PCI_FUNC(pdev->devfn)); | |
884 | } | |
885 | ||
a975a24a | 886 | pbdev = s390_pci_find_dev_by_target(s, dev->id); |
3e5cfba3 | 887 | if (!pbdev) { |
b6e67ecc | 888 | pbdev = s390_pci_device_new(s, dev->id, errp); |
af9ed379 | 889 | if (!pbdev) { |
0d36d791 | 890 | return; |
af9ed379 | 891 | } |
3e5cfba3 | 892 | } |
8cba80c3 | 893 | |
af9ed379 YMZ |
894 | if (object_dynamic_cast(OBJECT(dev), "vfio-pci")) { |
895 | pbdev->fh |= FH_SHM_VFIO; | |
896 | } else { | |
897 | pbdev->fh |= FH_SHM_EMUL; | |
898 | } | |
8cba80c3 | 899 | |
af9ed379 | 900 | pbdev->pdev = pdev; |
fd56e061 | 901 | pbdev->iommu = s390_pci_get_iommu(s, pci_get_bus(pdev), pdev->devfn); |
de91ea92 | 902 | pbdev->iommu->pbdev = pbdev; |
2c28c490 | 903 | pbdev->state = ZPCI_FS_DISABLED; |
8f955950 | 904 | |
857cc719 YMZ |
905 | if (s390_pci_msix_init(pbdev)) { |
906 | error_setg(errp, "MSI-X support is mandatory " | |
907 | "in the S390 architecture"); | |
908 | return; | |
909 | } | |
8cba80c3 | 910 | |
af9ed379 | 911 | if (dev->hotplugged) { |
d57d6abc | 912 | s390_pci_generate_plug_event(HP_EVENT_TO_CONFIGURED , |
af9ed379 YMZ |
913 | pbdev->fh, pbdev->fid); |
914 | } | |
915 | } else if (object_dynamic_cast(OBJECT(dev), TYPE_S390_PCI_DEVICE)) { | |
af9ed379 | 916 | pbdev = S390_PCI_DEVICE(dev); |
af9ed379 | 917 | |
6069bcde DH |
918 | /* the allocated idx is actually getting used */ |
919 | s->next_idx = (pbdev->idx + 1) & FH_MASK_INDEX; | |
e70377df PM |
920 | pbdev->fh = pbdev->idx; |
921 | QTAILQ_INSERT_TAIL(&s->zpci_devs, pbdev, link); | |
df8dd91b | 922 | g_hash_table_insert(s->zpci_table, &pbdev->idx, pbdev); |
6ed675c9 LQ |
923 | } else { |
924 | g_assert_not_reached(); | |
8cba80c3 | 925 | } |
8cba80c3 FB |
926 | } |
927 | ||
93d16d81 YMZ |
928 | static void s390_pcihost_timer_cb(void *opaque) |
929 | { | |
930 | S390PCIBusDevice *pbdev = opaque; | |
931 | ||
932 | if (pbdev->summary_ind) { | |
933 | pci_dereg_irqs(pbdev); | |
934 | } | |
de91ea92 YMZ |
935 | if (pbdev->iommu->enabled) { |
936 | pci_dereg_ioat(pbdev->iommu); | |
93d16d81 YMZ |
937 | } |
938 | ||
939 | pbdev->state = ZPCI_FS_STANDBY; | |
940 | s390_pci_generate_plug_event(HP_EVENT_CONFIGURED_TO_STBRES, | |
941 | pbdev->fh, pbdev->fid); | |
942 | qdev_unplug(DEVICE(pbdev), NULL); | |
943 | } | |
944 | ||
fa2a7751 DH |
945 | static void s390_pcihost_unplug(HotplugHandler *hotplug_dev, DeviceState *dev, |
946 | Error **errp) | |
8cba80c3 | 947 | { |
19375e9b | 948 | S390pciState *s = S390_PCI_HOST_BRIDGE(hotplug_dev); |
af9ed379 | 949 | PCIDevice *pci_dev = NULL; |
03805be0 | 950 | PCIBus *bus; |
e70377df | 951 | int32_t devfn; |
af9ed379 | 952 | S390PCIBusDevice *pbdev = NULL; |
af9ed379 | 953 | |
3fc92a24 PM |
954 | if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_BRIDGE)) { |
955 | error_setg(errp, "PCI bridge hot unplug currently not supported"); | |
956 | return; | |
957 | } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { | |
af9ed379 YMZ |
958 | pci_dev = PCI_DEVICE(dev); |
959 | ||
e70377df PM |
960 | QTAILQ_FOREACH(pbdev, &s->zpci_devs, link) { |
961 | if (pbdev->pdev == pci_dev) { | |
af9ed379 YMZ |
962 | break; |
963 | } | |
964 | } | |
0c2a16a4 | 965 | assert(pbdev != NULL); |
af9ed379 YMZ |
966 | } else if (object_dynamic_cast(OBJECT(dev), TYPE_S390_PCI_DEVICE)) { |
967 | pbdev = S390_PCI_DEVICE(dev); | |
968 | pci_dev = pbdev->pdev; | |
6ed675c9 LQ |
969 | } else { |
970 | g_assert_not_reached(); | |
af9ed379 | 971 | } |
8cba80c3 | 972 | |
5d1abf23 YMZ |
973 | switch (pbdev->state) { |
974 | case ZPCI_FS_RESERVED: | |
975 | goto out; | |
976 | case ZPCI_FS_STANDBY: | |
977 | break; | |
978 | default: | |
3549f8c9 DH |
979 | if (pbdev->release_timer) { |
980 | return; | |
981 | } | |
93d16d81 | 982 | s390_pci_generate_plug_event(HP_EVENT_DECONFIGURE_REQUEST, |
8cba80c3 | 983 | pbdev->fh, pbdev->fid); |
93d16d81 YMZ |
984 | pbdev->release_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, |
985 | s390_pcihost_timer_cb, | |
986 | pbdev); | |
987 | timer_mod(pbdev->release_timer, | |
988 | qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + HOT_UNPLUG_TIMEOUT); | |
989 | return; | |
990 | } | |
991 | ||
d648a3e6 | 992 | if (pbdev->release_timer) { |
93d16d81 YMZ |
993 | timer_del(pbdev->release_timer); |
994 | timer_free(pbdev->release_timer); | |
995 | pbdev->release_timer = NULL; | |
8cba80c3 FB |
996 | } |
997 | ||
998 | s390_pci_generate_plug_event(HP_EVENT_STANDBY_TO_RESERVED, | |
999 | pbdev->fh, pbdev->fid); | |
fd56e061 | 1000 | bus = pci_get_bus(pci_dev); |
03805be0 | 1001 | devfn = pci_dev->devfn; |
af9ed379 | 1002 | object_unparent(OBJECT(pci_dev)); |
6e92c70c | 1003 | fmb_timer_free(pbdev); |
8f955950 | 1004 | s390_pci_msix_free(pbdev); |
a975a24a | 1005 | s390_pci_iommu_free(s, bus, devfn); |
8cba80c3 | 1006 | pbdev->pdev = NULL; |
5d1abf23 YMZ |
1007 | pbdev->state = ZPCI_FS_RESERVED; |
1008 | out: | |
af9ed379 | 1009 | pbdev->fid = 0; |
e70377df | 1010 | QTAILQ_REMOVE(&s->zpci_devs, pbdev, link); |
df8dd91b | 1011 | g_hash_table_remove(s->zpci_table, &pbdev->idx); |
af9ed379 | 1012 | object_unparent(OBJECT(pbdev)); |
8cba80c3 FB |
1013 | } |
1014 | ||
d2f07120 PM |
1015 | static void s390_pci_enumerate_bridge(PCIBus *bus, PCIDevice *pdev, |
1016 | void *opaque) | |
1017 | { | |
1018 | S390pciState *s = opaque; | |
1019 | unsigned int primary = s->bus_no; | |
1020 | unsigned int subordinate = 0xff; | |
1021 | PCIBus *sec_bus = NULL; | |
1022 | ||
1023 | if ((pci_default_read_config(pdev, PCI_HEADER_TYPE, 1) != | |
1024 | PCI_HEADER_TYPE_BRIDGE)) { | |
1025 | return; | |
1026 | } | |
1027 | ||
1028 | (s->bus_no)++; | |
1029 | pci_default_write_config(pdev, PCI_PRIMARY_BUS, primary, 1); | |
1030 | pci_default_write_config(pdev, PCI_SECONDARY_BUS, s->bus_no, 1); | |
1031 | pci_default_write_config(pdev, PCI_SUBORDINATE_BUS, s->bus_no, 1); | |
1032 | ||
1033 | sec_bus = pci_bridge_get_sec_bus(PCI_BRIDGE(pdev)); | |
1034 | if (!sec_bus) { | |
1035 | return; | |
1036 | } | |
1037 | ||
1038 | pci_default_write_config(pdev, PCI_SUBORDINATE_BUS, subordinate, 1); | |
1039 | pci_for_each_device(sec_bus, pci_bus_num(sec_bus), | |
1040 | s390_pci_enumerate_bridge, s); | |
1041 | pci_default_write_config(pdev, PCI_SUBORDINATE_BUS, s->bus_no, 1); | |
1042 | } | |
1043 | ||
1044 | static void s390_pcihost_reset(DeviceState *dev) | |
1045 | { | |
1046 | S390pciState *s = S390_PCI_HOST_BRIDGE(dev); | |
1047 | PCIBus *bus = s->parent_obj.bus; | |
1048 | ||
1049 | s->bus_no = 0; | |
1050 | pci_for_each_device(bus, pci_bus_num(bus), s390_pci_enumerate_bridge, s); | |
1051 | } | |
1052 | ||
8cba80c3 FB |
1053 | static void s390_pcihost_class_init(ObjectClass *klass, void *data) |
1054 | { | |
8cba80c3 FB |
1055 | DeviceClass *dc = DEVICE_CLASS(klass); |
1056 | HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass); | |
1057 | ||
d2f07120 | 1058 | dc->reset = s390_pcihost_reset; |
b576d582 | 1059 | dc->realize = s390_pcihost_realize; |
6069bcde | 1060 | hc->pre_plug = s390_pcihost_pre_plug; |
fa2a7751 DH |
1061 | hc->plug = s390_pcihost_plug; |
1062 | hc->unplug = s390_pcihost_unplug; | |
226419d6 | 1063 | msi_nonbroken = true; |
8cba80c3 FB |
1064 | } |
1065 | ||
1066 | static const TypeInfo s390_pcihost_info = { | |
1067 | .name = TYPE_S390_PCI_HOST_BRIDGE, | |
1068 | .parent = TYPE_PCI_HOST_BRIDGE, | |
1069 | .instance_size = sizeof(S390pciState), | |
1070 | .class_init = s390_pcihost_class_init, | |
1071 | .interfaces = (InterfaceInfo[]) { | |
1072 | { TYPE_HOTPLUG_HANDLER }, | |
1073 | { } | |
1074 | } | |
1075 | }; | |
1076 | ||
90a0f9af YMZ |
1077 | static const TypeInfo s390_pcibus_info = { |
1078 | .name = TYPE_S390_PCI_BUS, | |
1079 | .parent = TYPE_BUS, | |
1080 | .instance_size = sizeof(S390PCIBus), | |
1081 | }; | |
1082 | ||
a975a24a | 1083 | static uint16_t s390_pci_generate_uid(S390pciState *s) |
3e5cfba3 YMZ |
1084 | { |
1085 | uint16_t uid = 0; | |
1086 | ||
1087 | do { | |
1088 | uid++; | |
a975a24a | 1089 | if (!s390_pci_find_dev_by_uid(s, uid)) { |
3e5cfba3 YMZ |
1090 | return uid; |
1091 | } | |
1092 | } while (uid < ZPCI_MAX_UID); | |
1093 | ||
1094 | return UID_UNDEFINED; | |
1095 | } | |
1096 | ||
a975a24a | 1097 | static uint32_t s390_pci_generate_fid(S390pciState *s, Error **errp) |
3e5cfba3 YMZ |
1098 | { |
1099 | uint32_t fid = 0; | |
1100 | ||
35b6e94b | 1101 | do { |
a975a24a | 1102 | if (!s390_pci_find_dev_by_fid(s, fid)) { |
3e5cfba3 YMZ |
1103 | return fid; |
1104 | } | |
35b6e94b | 1105 | } while (fid++ != ZPCI_MAX_FID); |
3e5cfba3 YMZ |
1106 | |
1107 | error_setg(errp, "no free fid could be found"); | |
1108 | return 0; | |
1109 | } | |
1110 | ||
1111 | static void s390_pci_device_realize(DeviceState *dev, Error **errp) | |
1112 | { | |
1113 | S390PCIBusDevice *zpci = S390_PCI_DEVICE(dev); | |
a975a24a | 1114 | S390pciState *s = s390_get_phb(); |
3e5cfba3 YMZ |
1115 | |
1116 | if (!zpci->target) { | |
1117 | error_setg(errp, "target must be defined"); | |
1118 | return; | |
1119 | } | |
1120 | ||
a975a24a | 1121 | if (s390_pci_find_dev_by_target(s, zpci->target)) { |
3e5cfba3 YMZ |
1122 | error_setg(errp, "target %s already has an associated zpci device", |
1123 | zpci->target); | |
1124 | return; | |
1125 | } | |
1126 | ||
1127 | if (zpci->uid == UID_UNDEFINED) { | |
a975a24a | 1128 | zpci->uid = s390_pci_generate_uid(s); |
3e5cfba3 YMZ |
1129 | if (!zpci->uid) { |
1130 | error_setg(errp, "no free uid could be found"); | |
1131 | return; | |
1132 | } | |
a975a24a | 1133 | } else if (s390_pci_find_dev_by_uid(s, zpci->uid)) { |
3e5cfba3 YMZ |
1134 | error_setg(errp, "uid %u already in use", zpci->uid); |
1135 | return; | |
1136 | } | |
1137 | ||
1138 | if (!zpci->fid_defined) { | |
1139 | Error *local_error = NULL; | |
1140 | ||
a975a24a | 1141 | zpci->fid = s390_pci_generate_fid(s, &local_error); |
3e5cfba3 YMZ |
1142 | if (local_error) { |
1143 | error_propagate(errp, local_error); | |
1144 | return; | |
1145 | } | |
a975a24a | 1146 | } else if (s390_pci_find_dev_by_fid(s, zpci->fid)) { |
3e5cfba3 YMZ |
1147 | error_setg(errp, "fid %u already in use", zpci->fid); |
1148 | return; | |
1149 | } | |
1150 | ||
1151 | zpci->state = ZPCI_FS_RESERVED; | |
6e92c70c | 1152 | zpci->fmb.format = ZPCI_FMB_FORMAT; |
3e5cfba3 YMZ |
1153 | } |
1154 | ||
1155 | static void s390_pci_device_reset(DeviceState *dev) | |
1156 | { | |
1157 | S390PCIBusDevice *pbdev = S390_PCI_DEVICE(dev); | |
1158 | ||
1159 | switch (pbdev->state) { | |
1160 | case ZPCI_FS_RESERVED: | |
1161 | return; | |
1162 | case ZPCI_FS_STANDBY: | |
1163 | break; | |
1164 | default: | |
1165 | pbdev->fh &= ~FH_MASK_ENABLE; | |
1166 | pbdev->state = ZPCI_FS_DISABLED; | |
1167 | break; | |
1168 | } | |
1169 | ||
1170 | if (pbdev->summary_ind) { | |
1171 | pci_dereg_irqs(pbdev); | |
1172 | } | |
de91ea92 YMZ |
1173 | if (pbdev->iommu->enabled) { |
1174 | pci_dereg_ioat(pbdev->iommu); | |
3e5cfba3 YMZ |
1175 | } |
1176 | ||
6e92c70c | 1177 | fmb_timer_free(pbdev); |
3e5cfba3 YMZ |
1178 | } |
1179 | ||
1180 | static void s390_pci_get_fid(Object *obj, Visitor *v, const char *name, | |
1181 | void *opaque, Error **errp) | |
1182 | { | |
1183 | Property *prop = opaque; | |
1184 | uint32_t *ptr = qdev_get_prop_ptr(DEVICE(obj), prop); | |
1185 | ||
1186 | visit_type_uint32(v, name, ptr, errp); | |
1187 | } | |
1188 | ||
1189 | static void s390_pci_set_fid(Object *obj, Visitor *v, const char *name, | |
1190 | void *opaque, Error **errp) | |
1191 | { | |
1192 | DeviceState *dev = DEVICE(obj); | |
1193 | S390PCIBusDevice *zpci = S390_PCI_DEVICE(obj); | |
1194 | Property *prop = opaque; | |
1195 | uint32_t *ptr = qdev_get_prop_ptr(dev, prop); | |
1196 | ||
1197 | if (dev->realized) { | |
1198 | qdev_prop_set_after_realize(dev, name, errp); | |
1199 | return; | |
1200 | } | |
1201 | ||
1202 | visit_type_uint32(v, name, ptr, errp); | |
1203 | zpci->fid_defined = true; | |
1204 | } | |
1205 | ||
1b6b7d10 | 1206 | static const PropertyInfo s390_pci_fid_propinfo = { |
3e5cfba3 YMZ |
1207 | .name = "zpci_fid", |
1208 | .get = s390_pci_get_fid, | |
1209 | .set = s390_pci_set_fid, | |
1210 | }; | |
1211 | ||
1212 | #define DEFINE_PROP_S390_PCI_FID(_n, _s, _f) \ | |
1213 | DEFINE_PROP(_n, _s, _f, s390_pci_fid_propinfo, uint32_t) | |
1214 | ||
1215 | static Property s390_pci_device_properties[] = { | |
1216 | DEFINE_PROP_UINT16("uid", S390PCIBusDevice, uid, UID_UNDEFINED), | |
1217 | DEFINE_PROP_S390_PCI_FID("fid", S390PCIBusDevice, fid), | |
1218 | DEFINE_PROP_STRING("target", S390PCIBusDevice, target), | |
1219 | DEFINE_PROP_END_OF_LIST(), | |
1220 | }; | |
1221 | ||
1222 | static void s390_pci_device_class_init(ObjectClass *klass, void *data) | |
1223 | { | |
1224 | DeviceClass *dc = DEVICE_CLASS(klass); | |
1225 | ||
1226 | dc->desc = "zpci device"; | |
bd2aef10 | 1227 | set_bit(DEVICE_CATEGORY_MISC, dc->categories); |
3e5cfba3 YMZ |
1228 | dc->reset = s390_pci_device_reset; |
1229 | dc->bus_type = TYPE_S390_PCI_BUS; | |
1230 | dc->realize = s390_pci_device_realize; | |
1231 | dc->props = s390_pci_device_properties; | |
1232 | } | |
1233 | ||
1234 | static const TypeInfo s390_pci_device_info = { | |
1235 | .name = TYPE_S390_PCI_DEVICE, | |
1236 | .parent = TYPE_DEVICE, | |
1237 | .instance_size = sizeof(S390PCIBusDevice), | |
1238 | .class_init = s390_pci_device_class_init, | |
1239 | }; | |
1240 | ||
de91ea92 YMZ |
1241 | static TypeInfo s390_pci_iommu_info = { |
1242 | .name = TYPE_S390_PCI_IOMMU, | |
1243 | .parent = TYPE_OBJECT, | |
1244 | .instance_size = sizeof(S390PCIIOMMU), | |
1245 | }; | |
1246 | ||
1221a474 AK |
1247 | static void s390_iommu_memory_region_class_init(ObjectClass *klass, void *data) |
1248 | { | |
1249 | IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_CLASS(klass); | |
1250 | ||
1251 | imrc->translate = s390_translate_iommu; | |
6c5e7402 | 1252 | imrc->replay = s390_pci_iommu_replay; |
1221a474 AK |
1253 | } |
1254 | ||
1255 | static const TypeInfo s390_iommu_memory_region_info = { | |
1256 | .parent = TYPE_IOMMU_MEMORY_REGION, | |
1257 | .name = TYPE_S390_IOMMU_MEMORY_REGION, | |
1258 | .class_init = s390_iommu_memory_region_class_init, | |
1259 | }; | |
1260 | ||
8cba80c3 FB |
1261 | static void s390_pci_register_types(void) |
1262 | { | |
1263 | type_register_static(&s390_pcihost_info); | |
90a0f9af | 1264 | type_register_static(&s390_pcibus_info); |
3e5cfba3 | 1265 | type_register_static(&s390_pci_device_info); |
de91ea92 | 1266 | type_register_static(&s390_pci_iommu_info); |
1221a474 | 1267 | type_register_static(&s390_iommu_memory_region_info); |
8cba80c3 FB |
1268 | } |
1269 | ||
1270 | type_init(s390_pci_register_types) |