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Commit | Line | Data |
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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 | ||
e0998fe8 DH |
151 | static void s390_pci_perform_unplug(S390PCIBusDevice *pbdev) |
152 | { | |
153 | HotplugHandler *hotplug_ctrl; | |
154 | ||
155 | /* Unplug the PCI device */ | |
156 | if (pbdev->pdev) { | |
157 | hotplug_ctrl = qdev_get_hotplug_handler(DEVICE(pbdev->pdev)); | |
158 | hotplug_handler_unplug(hotplug_ctrl, DEVICE(pbdev->pdev), | |
159 | &error_abort); | |
160 | } | |
161 | ||
162 | /* Unplug the zPCI device */ | |
163 | hotplug_ctrl = qdev_get_hotplug_handler(DEVICE(pbdev)); | |
164 | hotplug_handler_unplug(hotplug_ctrl, DEVICE(pbdev), &error_abort); | |
165 | } | |
166 | ||
8f5cb693 YMZ |
167 | void s390_pci_sclp_deconfigure(SCCB *sccb) |
168 | { | |
80b7a265 | 169 | IoaCfgSccb *psccb = (IoaCfgSccb *)sccb; |
a975a24a YMZ |
170 | S390PCIBusDevice *pbdev = s390_pci_find_dev_by_fid(s390_get_phb(), |
171 | be32_to_cpu(psccb->aid)); | |
8f5cb693 YMZ |
172 | uint16_t rc; |
173 | ||
5d1abf23 | 174 | if (!pbdev) { |
8f5cb693 | 175 | DPRINTF("sclp deconfig no dev found\n"); |
8cba80c3 | 176 | rc = SCLP_RC_ADAPTER_ID_NOT_RECOGNIZED; |
5d1abf23 YMZ |
177 | goto out; |
178 | } | |
179 | ||
180 | switch (pbdev->state) { | |
181 | case ZPCI_FS_RESERVED: | |
182 | rc = SCLP_RC_ADAPTER_IN_RESERVED_STATE; | |
183 | break; | |
184 | case ZPCI_FS_STANDBY: | |
185 | rc = SCLP_RC_NO_ACTION_REQUIRED; | |
186 | break; | |
187 | default: | |
188 | if (pbdev->summary_ind) { | |
189 | pci_dereg_irqs(pbdev); | |
190 | } | |
de91ea92 YMZ |
191 | if (pbdev->iommu->enabled) { |
192 | pci_dereg_ioat(pbdev->iommu); | |
5d1abf23 YMZ |
193 | } |
194 | pbdev->state = ZPCI_FS_STANDBY; | |
195 | rc = SCLP_RC_NORMAL_COMPLETION; | |
93d16d81 | 196 | |
9f2a46b1 | 197 | if (pbdev->unplug_requested) { |
e0998fe8 | 198 | s390_pci_perform_unplug(pbdev); |
93d16d81 | 199 | } |
8cba80c3 | 200 | } |
3b40ea29 | 201 | out: |
8cba80c3 | 202 | psccb->header.response_code = cpu_to_be16(rc); |
8cba80c3 FB |
203 | } |
204 | ||
a975a24a | 205 | static S390PCIBusDevice *s390_pci_find_dev_by_uid(S390pciState *s, uint16_t uid) |
3e5cfba3 | 206 | { |
3e5cfba3 | 207 | S390PCIBusDevice *pbdev; |
3e5cfba3 | 208 | |
e70377df | 209 | QTAILQ_FOREACH(pbdev, &s->zpci_devs, link) { |
3e5cfba3 YMZ |
210 | if (pbdev->uid == uid) { |
211 | return pbdev; | |
212 | } | |
213 | } | |
214 | ||
215 | return NULL; | |
216 | } | |
217 | ||
ceb7054f YMZ |
218 | S390PCIBusDevice *s390_pci_find_dev_by_target(S390pciState *s, |
219 | const char *target) | |
3e5cfba3 | 220 | { |
3e5cfba3 | 221 | S390PCIBusDevice *pbdev; |
3e5cfba3 YMZ |
222 | |
223 | if (!target) { | |
224 | return NULL; | |
225 | } | |
226 | ||
e70377df | 227 | QTAILQ_FOREACH(pbdev, &s->zpci_devs, link) { |
3e5cfba3 YMZ |
228 | if (!strcmp(pbdev->target, target)) { |
229 | return pbdev; | |
230 | } | |
231 | } | |
232 | ||
233 | return NULL; | |
234 | } | |
235 | ||
e0998fe8 DH |
236 | static S390PCIBusDevice *s390_pci_find_dev_by_pci(S390pciState *s, |
237 | PCIDevice *pci_dev) | |
238 | { | |
239 | S390PCIBusDevice *pbdev; | |
240 | ||
241 | if (!pci_dev) { | |
242 | return NULL; | |
243 | } | |
244 | ||
245 | QTAILQ_FOREACH(pbdev, &s->zpci_devs, link) { | |
246 | if (pbdev->pdev == pci_dev) { | |
247 | return pbdev; | |
248 | } | |
249 | } | |
250 | ||
251 | return NULL; | |
252 | } | |
253 | ||
a975a24a | 254 | S390PCIBusDevice *s390_pci_find_dev_by_idx(S390pciState *s, uint32_t idx) |
8cba80c3 | 255 | { |
df8dd91b | 256 | return g_hash_table_lookup(s->zpci_table, &idx); |
8cba80c3 FB |
257 | } |
258 | ||
a975a24a | 259 | S390PCIBusDevice *s390_pci_find_dev_by_fh(S390pciState *s, uint32_t fh) |
8cba80c3 | 260 | { |
df8dd91b YMZ |
261 | uint32_t idx = FH_MASK_INDEX & fh; |
262 | S390PCIBusDevice *pbdev = s390_pci_find_dev_by_idx(s, idx); | |
8cba80c3 | 263 | |
df8dd91b YMZ |
264 | if (pbdev && pbdev->fh == fh) { |
265 | return pbdev; | |
8cba80c3 FB |
266 | } |
267 | ||
268 | return NULL; | |
269 | } | |
270 | ||
271 | static void s390_pci_generate_event(uint8_t cc, uint16_t pec, uint32_t fh, | |
272 | uint32_t fid, uint64_t faddr, uint32_t e) | |
273 | { | |
b7022d9a | 274 | SeiContainer *sei_cont; |
e7d33695 | 275 | S390pciState *s = s390_get_phb(); |
8cba80c3 | 276 | |
96f64aa8 | 277 | sei_cont = g_new0(SeiContainer, 1); |
8cba80c3 FB |
278 | sei_cont->fh = fh; |
279 | sei_cont->fid = fid; | |
280 | sei_cont->cc = cc; | |
281 | sei_cont->pec = pec; | |
282 | sei_cont->faddr = faddr; | |
283 | sei_cont->e = e; | |
284 | ||
285 | QTAILQ_INSERT_TAIL(&s->pending_sei, sei_cont, link); | |
286 | css_generate_css_crws(0); | |
287 | } | |
288 | ||
289 | static void s390_pci_generate_plug_event(uint16_t pec, uint32_t fh, | |
290 | uint32_t fid) | |
291 | { | |
292 | s390_pci_generate_event(2, pec, fh, fid, 0, 0); | |
293 | } | |
294 | ||
5d1abf23 YMZ |
295 | void s390_pci_generate_error_event(uint16_t pec, uint32_t fh, uint32_t fid, |
296 | uint64_t faddr, uint32_t e) | |
8cba80c3 FB |
297 | { |
298 | s390_pci_generate_event(1, pec, fh, fid, faddr, e); | |
299 | } | |
300 | ||
301 | static void s390_pci_set_irq(void *opaque, int irq, int level) | |
302 | { | |
303 | /* nothing to do */ | |
304 | } | |
305 | ||
306 | static int s390_pci_map_irq(PCIDevice *pci_dev, int irq_num) | |
307 | { | |
308 | /* nothing to do */ | |
309 | return 0; | |
310 | } | |
311 | ||
312 | static uint64_t s390_pci_get_table_origin(uint64_t iota) | |
313 | { | |
314 | return iota & ~ZPCI_IOTA_RTTO_FLAG; | |
315 | } | |
316 | ||
317 | static unsigned int calc_rtx(dma_addr_t ptr) | |
318 | { | |
319 | return ((unsigned long) ptr >> ZPCI_RT_SHIFT) & ZPCI_INDEX_MASK; | |
320 | } | |
321 | ||
322 | static unsigned int calc_sx(dma_addr_t ptr) | |
323 | { | |
324 | return ((unsigned long) ptr >> ZPCI_ST_SHIFT) & ZPCI_INDEX_MASK; | |
325 | } | |
326 | ||
327 | static unsigned int calc_px(dma_addr_t ptr) | |
328 | { | |
329 | return ((unsigned long) ptr >> PAGE_SHIFT) & ZPCI_PT_MASK; | |
330 | } | |
331 | ||
332 | static uint64_t get_rt_sto(uint64_t entry) | |
333 | { | |
334 | return ((entry & ZPCI_TABLE_TYPE_MASK) == ZPCI_TABLE_TYPE_RTX) | |
335 | ? (entry & ZPCI_RTE_ADDR_MASK) | |
336 | : 0; | |
337 | } | |
338 | ||
339 | static uint64_t get_st_pto(uint64_t entry) | |
340 | { | |
341 | return ((entry & ZPCI_TABLE_TYPE_MASK) == ZPCI_TABLE_TYPE_SX) | |
342 | ? (entry & ZPCI_STE_ADDR_MASK) | |
343 | : 0; | |
344 | } | |
345 | ||
0125861e YMZ |
346 | static bool rt_entry_isvalid(uint64_t entry) |
347 | { | |
348 | return (entry & ZPCI_TABLE_VALID_MASK) == ZPCI_TABLE_VALID; | |
349 | } | |
350 | ||
351 | static bool pt_entry_isvalid(uint64_t entry) | |
352 | { | |
353 | return (entry & ZPCI_PTE_VALID_MASK) == ZPCI_PTE_VALID; | |
354 | } | |
355 | ||
356 | static bool entry_isprotected(uint64_t entry) | |
357 | { | |
358 | return (entry & ZPCI_TABLE_PROT_MASK) == ZPCI_TABLE_PROTECTED; | |
359 | } | |
360 | ||
361 | /* ett is expected table type, -1 page table, 0 segment table, 1 region table */ | |
362 | static uint64_t get_table_index(uint64_t iova, int8_t ett) | |
363 | { | |
364 | switch (ett) { | |
365 | case ZPCI_ETT_PT: | |
366 | return calc_px(iova); | |
367 | case ZPCI_ETT_ST: | |
368 | return calc_sx(iova); | |
369 | case ZPCI_ETT_RT: | |
370 | return calc_rtx(iova); | |
371 | } | |
372 | ||
373 | return -1; | |
374 | } | |
375 | ||
376 | static bool entry_isvalid(uint64_t entry, int8_t ett) | |
377 | { | |
378 | switch (ett) { | |
379 | case ZPCI_ETT_PT: | |
380 | return pt_entry_isvalid(entry); | |
381 | case ZPCI_ETT_ST: | |
382 | case ZPCI_ETT_RT: | |
383 | return rt_entry_isvalid(entry); | |
384 | } | |
385 | ||
386 | return false; | |
387 | } | |
388 | ||
389 | /* Return true if address translation is done */ | |
390 | static bool translate_iscomplete(uint64_t entry, int8_t ett) | |
391 | { | |
392 | switch (ett) { | |
393 | case 0: | |
394 | return (entry & ZPCI_TABLE_FC) ? true : false; | |
395 | case 1: | |
396 | return false; | |
397 | } | |
398 | ||
399 | return true; | |
400 | } | |
401 | ||
402 | static uint64_t get_frame_size(int8_t ett) | |
403 | { | |
404 | switch (ett) { | |
405 | case ZPCI_ETT_PT: | |
406 | return 1ULL << 12; | |
407 | case ZPCI_ETT_ST: | |
408 | return 1ULL << 20; | |
409 | case ZPCI_ETT_RT: | |
410 | return 1ULL << 31; | |
411 | } | |
412 | ||
413 | return 0; | |
414 | } | |
415 | ||
416 | static uint64_t get_next_table_origin(uint64_t entry, int8_t ett) | |
417 | { | |
418 | switch (ett) { | |
419 | case ZPCI_ETT_PT: | |
420 | return entry & ZPCI_PTE_ADDR_MASK; | |
421 | case ZPCI_ETT_ST: | |
422 | return get_st_pto(entry); | |
423 | case ZPCI_ETT_RT: | |
424 | return get_rt_sto(entry); | |
425 | } | |
426 | ||
427 | return 0; | |
428 | } | |
429 | ||
430 | /** | |
431 | * table_translate: do translation within one table and return the following | |
432 | * table origin | |
433 | * | |
434 | * @entry: the entry being translated, the result is stored in this. | |
435 | * @to: the address of table origin. | |
436 | * @ett: expected table type, 1 region table, 0 segment table and -1 page table. | |
437 | * @error: error code | |
438 | */ | |
439 | static uint64_t table_translate(S390IOTLBEntry *entry, uint64_t to, int8_t ett, | |
440 | uint16_t *error) | |
441 | { | |
442 | uint64_t tx, te, nto = 0; | |
443 | uint16_t err = 0; | |
444 | ||
445 | tx = get_table_index(entry->iova, ett); | |
446 | te = address_space_ldq(&address_space_memory, to + tx * sizeof(uint64_t), | |
447 | MEMTXATTRS_UNSPECIFIED, NULL); | |
448 | ||
449 | if (!te) { | |
450 | err = ERR_EVENT_INVALTE; | |
8cba80c3 FB |
451 | goto out; |
452 | } | |
453 | ||
0125861e YMZ |
454 | if (!entry_isvalid(te, ett)) { |
455 | entry->perm &= IOMMU_NONE; | |
8cba80c3 FB |
456 | goto out; |
457 | } | |
458 | ||
0125861e YMZ |
459 | if (ett == ZPCI_ETT_RT && ((te & ZPCI_TABLE_LEN_RTX) != ZPCI_TABLE_LEN_RTX |
460 | || te & ZPCI_TABLE_OFFSET_MASK)) { | |
461 | err = ERR_EVENT_INVALTL; | |
462 | goto out; | |
463 | } | |
8cba80c3 | 464 | |
0125861e YMZ |
465 | nto = get_next_table_origin(te, ett); |
466 | if (!nto) { | |
467 | err = ERR_EVENT_TT; | |
468 | goto out; | |
469 | } | |
470 | ||
471 | if (entry_isprotected(te)) { | |
472 | entry->perm &= IOMMU_RO; | |
473 | } else { | |
474 | entry->perm &= IOMMU_RW; | |
475 | } | |
476 | ||
477 | if (translate_iscomplete(te, ett)) { | |
478 | switch (ett) { | |
479 | case ZPCI_ETT_PT: | |
480 | entry->translated_addr = te & ZPCI_PTE_ADDR_MASK; | |
481 | break; | |
482 | case ZPCI_ETT_ST: | |
483 | entry->translated_addr = (te & ZPCI_SFAA_MASK) | | |
484 | (entry->iova & ~ZPCI_SFAA_MASK); | |
485 | break; | |
486 | } | |
487 | nto = 0; | |
488 | } | |
8cba80c3 | 489 | out: |
0125861e YMZ |
490 | if (err) { |
491 | entry->perm = IOMMU_NONE; | |
492 | *error = err; | |
493 | } | |
494 | entry->len = get_frame_size(ett); | |
495 | return nto; | |
496 | } | |
497 | ||
498 | uint16_t s390_guest_io_table_walk(uint64_t g_iota, hwaddr addr, | |
499 | S390IOTLBEntry *entry) | |
500 | { | |
501 | uint64_t to = s390_pci_get_table_origin(g_iota); | |
502 | int8_t ett = 1; | |
503 | uint16_t error = 0; | |
504 | ||
505 | entry->iova = addr & PAGE_MASK; | |
506 | entry->translated_addr = 0; | |
507 | entry->perm = IOMMU_RW; | |
508 | ||
509 | if (entry_isprotected(g_iota)) { | |
510 | entry->perm &= IOMMU_RO; | |
511 | } | |
512 | ||
513 | while (to) { | |
514 | to = table_translate(entry, to, ett--, &error); | |
515 | } | |
516 | ||
517 | return error; | |
8cba80c3 FB |
518 | } |
519 | ||
3df9d748 | 520 | static IOMMUTLBEntry s390_translate_iommu(IOMMUMemoryRegion *mr, hwaddr addr, |
2c91bcf2 | 521 | IOMMUAccessFlags flag, int iommu_idx) |
8cba80c3 | 522 | { |
de91ea92 | 523 | S390PCIIOMMU *iommu = container_of(mr, S390PCIIOMMU, iommu_mr); |
b3f05d8c YMZ |
524 | S390IOTLBEntry *entry; |
525 | uint64_t iova = addr & PAGE_MASK; | |
0125861e | 526 | uint16_t error = 0; |
8cba80c3 FB |
527 | IOMMUTLBEntry ret = { |
528 | .target_as = &address_space_memory, | |
529 | .iova = 0, | |
530 | .translated_addr = 0, | |
531 | .addr_mask = ~(hwaddr)0, | |
532 | .perm = IOMMU_NONE, | |
533 | }; | |
534 | ||
de91ea92 | 535 | switch (iommu->pbdev->state) { |
5d1abf23 YMZ |
536 | case ZPCI_FS_ENABLED: |
537 | case ZPCI_FS_BLOCKED: | |
de91ea92 | 538 | if (!iommu->enabled) { |
5d1abf23 YMZ |
539 | return ret; |
540 | } | |
541 | break; | |
542 | default: | |
dce1b089 YMZ |
543 | return ret; |
544 | } | |
545 | ||
8cba80c3 FB |
546 | DPRINTF("iommu trans addr 0x%" PRIx64 "\n", addr); |
547 | ||
de91ea92 | 548 | if (addr < iommu->pba || addr > iommu->pal) { |
0125861e YMZ |
549 | error = ERR_EVENT_OORANGE; |
550 | goto err; | |
8cba80c3 FB |
551 | } |
552 | ||
b3f05d8c YMZ |
553 | entry = g_hash_table_lookup(iommu->iotlb, &iova); |
554 | if (entry) { | |
555 | ret.iova = entry->iova; | |
556 | ret.translated_addr = entry->translated_addr; | |
557 | ret.addr_mask = entry->len - 1; | |
558 | ret.perm = entry->perm; | |
559 | } else { | |
560 | ret.iova = iova; | |
561 | ret.addr_mask = ~PAGE_MASK; | |
562 | ret.perm = IOMMU_NONE; | |
563 | } | |
8cba80c3 | 564 | |
0125861e YMZ |
565 | if (flag != IOMMU_NONE && !(flag & ret.perm)) { |
566 | error = ERR_EVENT_TPROTE; | |
567 | } | |
568 | err: | |
569 | if (error) { | |
570 | iommu->pbdev->state = ZPCI_FS_ERROR; | |
571 | s390_pci_generate_error_event(error, iommu->pbdev->fh, | |
572 | iommu->pbdev->fid, addr, 0); | |
8cba80c3 | 573 | } |
8cba80c3 FB |
574 | return ret; |
575 | } | |
576 | ||
6c5e7402 YMZ |
577 | static void s390_pci_iommu_replay(IOMMUMemoryRegion *iommu, |
578 | IOMMUNotifier *notifier) | |
579 | { | |
580 | /* It's impossible to plug a pci device on s390x that already has iommu | |
581 | * mappings which need to be replayed, that is due to the "one iommu per | |
582 | * zpci device" construct. But when we support migration of vfio-pci | |
583 | * devices in future, we need to revisit this. | |
584 | */ | |
585 | return; | |
586 | } | |
587 | ||
03805be0 YMZ |
588 | static S390PCIIOMMU *s390_pci_get_iommu(S390pciState *s, PCIBus *bus, |
589 | int devfn) | |
590 | { | |
591 | uint64_t key = (uintptr_t)bus; | |
592 | S390PCIIOMMUTable *table = g_hash_table_lookup(s->iommu_table, &key); | |
593 | S390PCIIOMMU *iommu; | |
594 | ||
595 | if (!table) { | |
96f64aa8 | 596 | table = g_new0(S390PCIIOMMUTable, 1); |
03805be0 YMZ |
597 | table->key = key; |
598 | g_hash_table_insert(s->iommu_table, &table->key, table); | |
599 | } | |
600 | ||
601 | iommu = table->iommu[PCI_SLOT(devfn)]; | |
602 | if (!iommu) { | |
603 | iommu = S390_PCI_IOMMU(object_new(TYPE_S390_PCI_IOMMU)); | |
604 | ||
605 | char *mr_name = g_strdup_printf("iommu-root-%02x:%02x.%01x", | |
606 | pci_bus_num(bus), | |
607 | PCI_SLOT(devfn), | |
608 | PCI_FUNC(devfn)); | |
609 | char *as_name = g_strdup_printf("iommu-pci-%02x:%02x.%01x", | |
610 | pci_bus_num(bus), | |
611 | PCI_SLOT(devfn), | |
612 | PCI_FUNC(devfn)); | |
613 | memory_region_init(&iommu->mr, OBJECT(iommu), mr_name, UINT64_MAX); | |
614 | address_space_init(&iommu->as, &iommu->mr, as_name); | |
b3f05d8c YMZ |
615 | iommu->iotlb = g_hash_table_new_full(g_int64_hash, g_int64_equal, |
616 | NULL, g_free); | |
03805be0 YMZ |
617 | table->iommu[PCI_SLOT(devfn)] = iommu; |
618 | ||
619 | g_free(mr_name); | |
620 | g_free(as_name); | |
621 | } | |
622 | ||
623 | return iommu; | |
624 | } | |
625 | ||
8cba80c3 FB |
626 | static AddressSpace *s390_pci_dma_iommu(PCIBus *bus, void *opaque, int devfn) |
627 | { | |
628 | S390pciState *s = opaque; | |
03805be0 | 629 | S390PCIIOMMU *iommu = s390_pci_get_iommu(s, bus, devfn); |
8cba80c3 | 630 | |
03805be0 | 631 | return &iommu->as; |
8cba80c3 FB |
632 | } |
633 | ||
634 | static uint8_t set_ind_atomic(uint64_t ind_loc, uint8_t to_be_set) | |
635 | { | |
636 | uint8_t ind_old, ind_new; | |
637 | hwaddr len = 1; | |
638 | uint8_t *ind_addr; | |
639 | ||
640 | ind_addr = cpu_physical_memory_map(ind_loc, &len, 1); | |
641 | if (!ind_addr) { | |
642 | s390_pci_generate_error_event(ERR_EVENT_AIRERR, 0, 0, 0, 0); | |
643 | return -1; | |
644 | } | |
645 | do { | |
646 | ind_old = *ind_addr; | |
647 | ind_new = ind_old | to_be_set; | |
648 | } while (atomic_cmpxchg(ind_addr, ind_old, ind_new) != ind_old); | |
649 | cpu_physical_memory_unmap(ind_addr, len, 1, len); | |
650 | ||
651 | return ind_old; | |
652 | } | |
653 | ||
654 | static void s390_msi_ctrl_write(void *opaque, hwaddr addr, uint64_t data, | |
655 | unsigned int size) | |
656 | { | |
8f955950 | 657 | S390PCIBusDevice *pbdev = opaque; |
8cba80c3 FB |
658 | uint32_t vec = data & ZPCI_MSI_VEC_MASK; |
659 | uint64_t ind_bit; | |
660 | uint32_t sum_bit; | |
8cba80c3 | 661 | |
ceb7054f YMZ |
662 | assert(pbdev); |
663 | DPRINTF("write_msix data 0x%" PRIx64 " idx %d vec 0x%x\n", data, | |
664 | pbdev->idx, vec); | |
8cba80c3 | 665 | |
5d1abf23 | 666 | if (pbdev->state != ZPCI_FS_ENABLED) { |
3be5c207 YMZ |
667 | return; |
668 | } | |
669 | ||
8cba80c3 FB |
670 | ind_bit = pbdev->routes.adapter.ind_offset; |
671 | sum_bit = pbdev->routes.adapter.summary_offset; | |
672 | ||
673 | set_ind_atomic(pbdev->routes.adapter.ind_addr + (ind_bit + vec) / 8, | |
674 | 0x80 >> ((ind_bit + vec) % 8)); | |
675 | if (!set_ind_atomic(pbdev->routes.adapter.summary_addr + sum_bit / 8, | |
676 | 0x80 >> (sum_bit % 8))) { | |
25a08b8d | 677 | css_adapter_interrupt(CSS_IO_ADAPTER_PCI, pbdev->isc); |
8cba80c3 | 678 | } |
8cba80c3 FB |
679 | } |
680 | ||
681 | static uint64_t s390_msi_ctrl_read(void *opaque, hwaddr addr, unsigned size) | |
682 | { | |
683 | return 0xffffffff; | |
684 | } | |
685 | ||
686 | static const MemoryRegionOps s390_msi_ctrl_ops = { | |
687 | .write = s390_msi_ctrl_write, | |
688 | .read = s390_msi_ctrl_read, | |
689 | .endianness = DEVICE_LITTLE_ENDIAN, | |
690 | }; | |
691 | ||
de91ea92 | 692 | void s390_pci_iommu_enable(S390PCIIOMMU *iommu) |
f0a399db | 693 | { |
de91ea92 | 694 | char *name = g_strdup_printf("iommu-s390-%04x", iommu->pbdev->uid); |
1221a474 AK |
695 | memory_region_init_iommu(&iommu->iommu_mr, sizeof(iommu->iommu_mr), |
696 | TYPE_S390_IOMMU_MEMORY_REGION, OBJECT(&iommu->mr), | |
dbe9cf60 | 697 | name, iommu->pal - iommu->pba + 1); |
de91ea92 | 698 | iommu->enabled = true; |
3df9d748 | 699 | memory_region_add_subregion(&iommu->mr, 0, MEMORY_REGION(&iommu->iommu_mr)); |
de91ea92 | 700 | g_free(name); |
71583888 | 701 | } |
f0a399db | 702 | |
de91ea92 | 703 | void s390_pci_iommu_disable(S390PCIIOMMU *iommu) |
71583888 | 704 | { |
de91ea92 | 705 | iommu->enabled = false; |
b3f05d8c | 706 | g_hash_table_remove_all(iommu->iotlb); |
3df9d748 | 707 | memory_region_del_subregion(&iommu->mr, MEMORY_REGION(&iommu->iommu_mr)); |
de91ea92 | 708 | object_unparent(OBJECT(&iommu->iommu_mr)); |
f0a399db YMZ |
709 | } |
710 | ||
a975a24a | 711 | static void s390_pci_iommu_free(S390pciState *s, PCIBus *bus, int32_t devfn) |
8cba80c3 | 712 | { |
03805be0 YMZ |
713 | uint64_t key = (uintptr_t)bus; |
714 | S390PCIIOMMUTable *table = g_hash_table_lookup(s->iommu_table, &key); | |
715 | S390PCIIOMMU *iommu = table ? table->iommu[PCI_SLOT(devfn)] : NULL; | |
8cba80c3 | 716 | |
03805be0 YMZ |
717 | if (!table || !iommu) { |
718 | return; | |
8cba80c3 | 719 | } |
03805be0 YMZ |
720 | |
721 | table->iommu[PCI_SLOT(devfn)] = NULL; | |
b3f05d8c | 722 | g_hash_table_destroy(iommu->iotlb); |
03805be0 YMZ |
723 | address_space_destroy(&iommu->as); |
724 | object_unparent(OBJECT(&iommu->mr)); | |
725 | object_unparent(OBJECT(iommu)); | |
726 | object_unref(OBJECT(iommu)); | |
8cba80c3 FB |
727 | } |
728 | ||
b576d582 | 729 | static void s390_pcihost_realize(DeviceState *dev, Error **errp) |
8cba80c3 FB |
730 | { |
731 | PCIBus *b; | |
732 | BusState *bus; | |
733 | PCIHostState *phb = PCI_HOST_BRIDGE(dev); | |
734 | S390pciState *s = S390_PCI_HOST_BRIDGE(dev); | |
b576d582 | 735 | Error *local_err = NULL; |
8cba80c3 FB |
736 | |
737 | DPRINTF("host_init\n"); | |
738 | ||
b576d582 TH |
739 | b = pci_register_root_bus(dev, NULL, s390_pci_set_irq, s390_pci_map_irq, |
740 | NULL, get_system_memory(), get_system_io(), 0, | |
741 | 64, TYPE_PCI_BUS); | |
8cba80c3 FB |
742 | pci_setup_iommu(b, s390_pci_dma_iommu, s); |
743 | ||
744 | bus = BUS(b); | |
b576d582 TH |
745 | qbus_set_hotplug_handler(bus, dev, &local_err); |
746 | if (local_err) { | |
747 | error_propagate(errp, local_err); | |
748 | return; | |
749 | } | |
8cba80c3 | 750 | phb->bus = b; |
90a0f9af | 751 | |
b576d582 TH |
752 | s->bus = S390_PCI_BUS(qbus_create(TYPE_S390_PCI_BUS, dev, NULL)); |
753 | qbus_set_hotplug_handler(BUS(s->bus), dev, &local_err); | |
754 | if (local_err) { | |
755 | error_propagate(errp, local_err); | |
756 | return; | |
757 | } | |
90a0f9af | 758 | |
03805be0 YMZ |
759 | s->iommu_table = g_hash_table_new_full(g_int64_hash, g_int64_equal, |
760 | NULL, g_free); | |
df8dd91b | 761 | s->zpci_table = g_hash_table_new_full(g_int_hash, g_int_equal, NULL, NULL); |
d2f07120 | 762 | s->bus_no = 0; |
8cba80c3 | 763 | QTAILQ_INIT(&s->pending_sei); |
e70377df | 764 | QTAILQ_INIT(&s->zpci_devs); |
dde522bb | 765 | |
1497c160 | 766 | css_register_io_adapters(CSS_IO_ADAPTER_PCI, true, false, |
b576d582 | 767 | S390_ADAPTER_SUPPRESSIBLE, &local_err); |
b2322003 | 768 | error_propagate(errp, local_err); |
8cba80c3 FB |
769 | } |
770 | ||
857cc719 | 771 | static int s390_pci_msix_init(S390PCIBusDevice *pbdev) |
8cba80c3 | 772 | { |
857cc719 | 773 | char *name; |
8cba80c3 FB |
774 | uint8_t pos; |
775 | uint16_t ctrl; | |
776 | uint32_t table, pba; | |
777 | ||
778 | pos = pci_find_capability(pbdev->pdev, PCI_CAP_ID_MSIX); | |
779 | if (!pos) { | |
857cc719 | 780 | return -1; |
8cba80c3 FB |
781 | } |
782 | ||
ce1307e1 | 783 | ctrl = pci_host_config_read_common(pbdev->pdev, pos + PCI_MSIX_FLAGS, |
8cba80c3 FB |
784 | pci_config_size(pbdev->pdev), sizeof(ctrl)); |
785 | table = pci_host_config_read_common(pbdev->pdev, pos + PCI_MSIX_TABLE, | |
786 | pci_config_size(pbdev->pdev), sizeof(table)); | |
787 | pba = pci_host_config_read_common(pbdev->pdev, pos + PCI_MSIX_PBA, | |
788 | pci_config_size(pbdev->pdev), sizeof(pba)); | |
789 | ||
790 | pbdev->msix.table_bar = table & PCI_MSIX_FLAGS_BIRMASK; | |
791 | pbdev->msix.table_offset = table & ~PCI_MSIX_FLAGS_BIRMASK; | |
792 | pbdev->msix.pba_bar = pba & PCI_MSIX_FLAGS_BIRMASK; | |
793 | pbdev->msix.pba_offset = pba & ~PCI_MSIX_FLAGS_BIRMASK; | |
794 | pbdev->msix.entries = (ctrl & PCI_MSIX_FLAGS_QSIZE) + 1; | |
8f955950 YMZ |
795 | |
796 | name = g_strdup_printf("msix-s390-%04x", pbdev->uid); | |
8f955950 YMZ |
797 | memory_region_init_io(&pbdev->msix_notify_mr, OBJECT(pbdev), |
798 | &s390_msi_ctrl_ops, pbdev, name, PAGE_SIZE); | |
799 | memory_region_add_subregion(&pbdev->iommu->mr, ZPCI_MSI_ADDR, | |
800 | &pbdev->msix_notify_mr); | |
8f955950 | 801 | g_free(name); |
857cc719 YMZ |
802 | |
803 | return 0; | |
8f955950 YMZ |
804 | } |
805 | ||
806 | static void s390_pci_msix_free(S390PCIBusDevice *pbdev) | |
807 | { | |
808 | memory_region_del_subregion(&pbdev->iommu->mr, &pbdev->msix_notify_mr); | |
809 | object_unparent(OBJECT(&pbdev->msix_notify_mr)); | |
810 | } | |
811 | ||
a975a24a | 812 | static S390PCIBusDevice *s390_pci_device_new(S390pciState *s, |
b6e67ecc | 813 | const char *target, Error **errp) |
3e5cfba3 | 814 | { |
b6e67ecc DH |
815 | Error *local_err = NULL; |
816 | DeviceState *dev; | |
3e5cfba3 YMZ |
817 | |
818 | dev = qdev_try_create(BUS(s->bus), TYPE_S390_PCI_DEVICE); | |
819 | if (!dev) { | |
b6e67ecc | 820 | error_setg(errp, "zPCI device could not be created"); |
3e5cfba3 YMZ |
821 | return NULL; |
822 | } | |
823 | ||
b6e67ecc DH |
824 | object_property_set_str(OBJECT(dev), target, "target", &local_err); |
825 | if (local_err) { | |
826 | object_unparent(OBJECT(dev)); | |
827 | error_propagate_prepend(errp, local_err, | |
828 | "zPCI device could not be created: "); | |
829 | return NULL; | |
830 | } | |
831 | object_property_set_bool(OBJECT(dev), true, "realized", &local_err); | |
832 | if (local_err) { | |
833 | object_unparent(OBJECT(dev)); | |
834 | error_propagate_prepend(errp, local_err, | |
835 | "zPCI device could not be created: "); | |
836 | return NULL; | |
837 | } | |
3e5cfba3 YMZ |
838 | |
839 | return S390_PCI_DEVICE(dev); | |
840 | } | |
841 | ||
a975a24a | 842 | static bool s390_pci_alloc_idx(S390pciState *s, S390PCIBusDevice *pbdev) |
e70377df PM |
843 | { |
844 | uint32_t idx; | |
e70377df PM |
845 | |
846 | idx = s->next_idx; | |
a975a24a | 847 | while (s390_pci_find_dev_by_idx(s, idx)) { |
e70377df PM |
848 | idx = (idx + 1) & FH_MASK_INDEX; |
849 | if (idx == s->next_idx) { | |
850 | return false; | |
851 | } | |
852 | } | |
853 | ||
854 | pbdev->idx = idx; | |
e70377df PM |
855 | return true; |
856 | } | |
857 | ||
6069bcde DH |
858 | static void s390_pcihost_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev, |
859 | Error **errp) | |
860 | { | |
861 | S390pciState *s = S390_PCI_HOST_BRIDGE(hotplug_dev); | |
862 | ||
863 | if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { | |
864 | PCIDevice *pdev = PCI_DEVICE(dev); | |
865 | ||
866 | if (pdev->cap_present & QEMU_PCI_CAP_MULTIFUNCTION) { | |
867 | error_setg(errp, "multifunction not supported in s390"); | |
868 | return; | |
869 | } | |
870 | } else if (object_dynamic_cast(OBJECT(dev), TYPE_S390_PCI_DEVICE)) { | |
871 | S390PCIBusDevice *pbdev = S390_PCI_DEVICE(dev); | |
872 | ||
873 | if (!s390_pci_alloc_idx(s, pbdev)) { | |
874 | error_setg(errp, "no slot for plugging zpci device"); | |
875 | return; | |
876 | } | |
877 | } | |
878 | } | |
879 | ||
fa2a7751 DH |
880 | static void s390_pcihost_plug(HotplugHandler *hotplug_dev, DeviceState *dev, |
881 | Error **errp) | |
8cba80c3 | 882 | { |
19375e9b | 883 | S390pciState *s = S390_PCI_HOST_BRIDGE(hotplug_dev); |
af9ed379 YMZ |
884 | PCIDevice *pdev = NULL; |
885 | S390PCIBusDevice *pbdev = NULL; | |
3e5cfba3 | 886 | |
3fc92a24 PM |
887 | if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_BRIDGE)) { |
888 | BusState *bus; | |
889 | PCIBridge *pb = PCI_BRIDGE(dev); | |
d2f07120 | 890 | PCIDevice *pdev = PCI_DEVICE(dev); |
3fc92a24 PM |
891 | |
892 | pci_bridge_map_irq(pb, dev->id, s390_pci_map_irq); | |
893 | pci_setup_iommu(&pb->sec_bus, s390_pci_dma_iommu, s); | |
894 | ||
895 | bus = BUS(&pb->sec_bus); | |
896 | qbus_set_hotplug_handler(bus, DEVICE(s), errp); | |
d2f07120 PM |
897 | |
898 | if (dev->hotplugged) { | |
899 | pci_default_write_config(pdev, PCI_PRIMARY_BUS, s->bus_no, 1); | |
900 | s->bus_no += 1; | |
901 | pci_default_write_config(pdev, PCI_SECONDARY_BUS, s->bus_no, 1); | |
902 | do { | |
fd56e061 | 903 | pdev = pci_get_bus(pdev)->parent_dev; |
d2f07120 PM |
904 | pci_default_write_config(pdev, PCI_SUBORDINATE_BUS, |
905 | s->bus_no, 1); | |
fd56e061 | 906 | } while (pci_get_bus(pdev) && pci_dev_bus_num(pdev)); |
d2f07120 | 907 | } |
3fc92a24 | 908 | } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { |
af9ed379 YMZ |
909 | pdev = PCI_DEVICE(dev); |
910 | ||
911 | if (!dev->id) { | |
912 | /* In the case the PCI device does not define an id */ | |
913 | /* we generate one based on the PCI address */ | |
914 | dev->id = g_strdup_printf("auto_%02x:%02x.%01x", | |
cdc57472 | 915 | pci_dev_bus_num(pdev), |
af9ed379 YMZ |
916 | PCI_SLOT(pdev->devfn), |
917 | PCI_FUNC(pdev->devfn)); | |
918 | } | |
919 | ||
a975a24a | 920 | pbdev = s390_pci_find_dev_by_target(s, dev->id); |
3e5cfba3 | 921 | if (!pbdev) { |
b6e67ecc | 922 | pbdev = s390_pci_device_new(s, dev->id, errp); |
af9ed379 | 923 | if (!pbdev) { |
0d36d791 | 924 | return; |
af9ed379 | 925 | } |
3e5cfba3 | 926 | } |
8cba80c3 | 927 | |
af9ed379 YMZ |
928 | if (object_dynamic_cast(OBJECT(dev), "vfio-pci")) { |
929 | pbdev->fh |= FH_SHM_VFIO; | |
930 | } else { | |
931 | pbdev->fh |= FH_SHM_EMUL; | |
932 | } | |
8cba80c3 | 933 | |
af9ed379 | 934 | pbdev->pdev = pdev; |
fd56e061 | 935 | pbdev->iommu = s390_pci_get_iommu(s, pci_get_bus(pdev), pdev->devfn); |
de91ea92 | 936 | pbdev->iommu->pbdev = pbdev; |
2c28c490 | 937 | pbdev->state = ZPCI_FS_DISABLED; |
8f955950 | 938 | |
857cc719 YMZ |
939 | if (s390_pci_msix_init(pbdev)) { |
940 | error_setg(errp, "MSI-X support is mandatory " | |
941 | "in the S390 architecture"); | |
942 | return; | |
943 | } | |
8cba80c3 | 944 | |
af9ed379 | 945 | if (dev->hotplugged) { |
d57d6abc | 946 | s390_pci_generate_plug_event(HP_EVENT_TO_CONFIGURED , |
af9ed379 YMZ |
947 | pbdev->fh, pbdev->fid); |
948 | } | |
949 | } else if (object_dynamic_cast(OBJECT(dev), TYPE_S390_PCI_DEVICE)) { | |
af9ed379 | 950 | pbdev = S390_PCI_DEVICE(dev); |
af9ed379 | 951 | |
6069bcde DH |
952 | /* the allocated idx is actually getting used */ |
953 | s->next_idx = (pbdev->idx + 1) & FH_MASK_INDEX; | |
e70377df PM |
954 | pbdev->fh = pbdev->idx; |
955 | QTAILQ_INSERT_TAIL(&s->zpci_devs, pbdev, link); | |
df8dd91b | 956 | g_hash_table_insert(s->zpci_table, &pbdev->idx, pbdev); |
6ed675c9 LQ |
957 | } else { |
958 | g_assert_not_reached(); | |
8cba80c3 | 959 | } |
8cba80c3 FB |
960 | } |
961 | ||
fa2a7751 DH |
962 | static void s390_pcihost_unplug(HotplugHandler *hotplug_dev, DeviceState *dev, |
963 | Error **errp) | |
8cba80c3 | 964 | { |
19375e9b | 965 | S390pciState *s = S390_PCI_HOST_BRIDGE(hotplug_dev); |
af9ed379 | 966 | S390PCIBusDevice *pbdev = NULL; |
af9ed379 | 967 | |
e0998fe8 DH |
968 | if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { |
969 | PCIDevice *pci_dev = PCI_DEVICE(dev); | |
970 | PCIBus *bus; | |
971 | int32_t devfn; | |
972 | ||
973 | pbdev = s390_pci_find_dev_by_pci(s, PCI_DEVICE(dev)); | |
974 | g_assert(pbdev); | |
975 | ||
976 | s390_pci_generate_plug_event(HP_EVENT_STANDBY_TO_RESERVED, | |
977 | pbdev->fh, pbdev->fid); | |
978 | bus = pci_get_bus(pci_dev); | |
979 | devfn = pci_dev->devfn; | |
980 | object_unparent(OBJECT(pci_dev)); | |
981 | ||
982 | s390_pci_msix_free(pbdev); | |
983 | s390_pci_iommu_free(s, bus, devfn); | |
984 | pbdev->pdev = NULL; | |
985 | pbdev->state = ZPCI_FS_RESERVED; | |
986 | } else if (object_dynamic_cast(OBJECT(dev), TYPE_S390_PCI_DEVICE)) { | |
987 | pbdev = S390_PCI_DEVICE(dev); | |
e0998fe8 DH |
988 | pbdev->fid = 0; |
989 | QTAILQ_REMOVE(&s->zpci_devs, pbdev, link); | |
990 | g_hash_table_remove(s->zpci_table, &pbdev->idx); | |
991 | object_unparent(OBJECT(pbdev)); | |
992 | } | |
993 | } | |
994 | ||
995 | static void s390_pcihost_unplug_request(HotplugHandler *hotplug_dev, | |
996 | DeviceState *dev, | |
997 | Error **errp) | |
998 | { | |
999 | S390pciState *s = S390_PCI_HOST_BRIDGE(hotplug_dev); | |
1000 | S390PCIBusDevice *pbdev; | |
1001 | ||
3fc92a24 PM |
1002 | if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_BRIDGE)) { |
1003 | error_setg(errp, "PCI bridge hot unplug currently not supported"); | |
3fc92a24 | 1004 | } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { |
e0998fe8 DH |
1005 | /* |
1006 | * Redirect the unplug request to the zPCI device and remember that | |
1007 | * we've checked the PCI device already (to prevent endless recursion). | |
1008 | */ | |
1009 | pbdev = s390_pci_find_dev_by_pci(s, PCI_DEVICE(dev)); | |
1010 | g_assert(pbdev); | |
1011 | pbdev->pci_unplug_request_processed = true; | |
1012 | qdev_unplug(DEVICE(pbdev), errp); | |
af9ed379 YMZ |
1013 | } else if (object_dynamic_cast(OBJECT(dev), TYPE_S390_PCI_DEVICE)) { |
1014 | pbdev = S390_PCI_DEVICE(dev); | |
8cba80c3 | 1015 | |
e0998fe8 DH |
1016 | /* |
1017 | * If unplug was initially requested for the zPCI device, we | |
1018 | * first have to redirect to the PCI device, which will in return | |
1019 | * redirect back to us after performing its checks (if the request | |
1020 | * is not blocked, e.g. because it's a PCI bridge). | |
1021 | */ | |
1022 | if (pbdev->pdev && !pbdev->pci_unplug_request_processed) { | |
1023 | qdev_unplug(DEVICE(pbdev->pdev), errp); | |
3549f8c9 DH |
1024 | return; |
1025 | } | |
e0998fe8 | 1026 | pbdev->pci_unplug_request_processed = false; |
93d16d81 | 1027 | |
e0998fe8 DH |
1028 | switch (pbdev->state) { |
1029 | case ZPCI_FS_STANDBY: | |
1030 | case ZPCI_FS_RESERVED: | |
1031 | s390_pci_perform_unplug(pbdev); | |
1032 | break; | |
1033 | default: | |
9f2a46b1 DH |
1034 | /* |
1035 | * Allow to send multiple requests, e.g. if the guest crashed | |
1036 | * before releasing the device, we would not be able to send | |
1037 | * another request to the same VM (e.g. fresh OS). | |
1038 | */ | |
1039 | pbdev->unplug_requested = true; | |
e0998fe8 DH |
1040 | s390_pci_generate_plug_event(HP_EVENT_DECONFIGURE_REQUEST, |
1041 | pbdev->fh, pbdev->fid); | |
e0998fe8 DH |
1042 | } |
1043 | } else { | |
1044 | g_assert_not_reached(); | |
8cba80c3 | 1045 | } |
8cba80c3 FB |
1046 | } |
1047 | ||
d2f07120 PM |
1048 | static void s390_pci_enumerate_bridge(PCIBus *bus, PCIDevice *pdev, |
1049 | void *opaque) | |
1050 | { | |
1051 | S390pciState *s = opaque; | |
1052 | unsigned int primary = s->bus_no; | |
1053 | unsigned int subordinate = 0xff; | |
1054 | PCIBus *sec_bus = NULL; | |
1055 | ||
1056 | if ((pci_default_read_config(pdev, PCI_HEADER_TYPE, 1) != | |
1057 | PCI_HEADER_TYPE_BRIDGE)) { | |
1058 | return; | |
1059 | } | |
1060 | ||
1061 | (s->bus_no)++; | |
1062 | pci_default_write_config(pdev, PCI_PRIMARY_BUS, primary, 1); | |
1063 | pci_default_write_config(pdev, PCI_SECONDARY_BUS, s->bus_no, 1); | |
1064 | pci_default_write_config(pdev, PCI_SUBORDINATE_BUS, s->bus_no, 1); | |
1065 | ||
1066 | sec_bus = pci_bridge_get_sec_bus(PCI_BRIDGE(pdev)); | |
1067 | if (!sec_bus) { | |
1068 | return; | |
1069 | } | |
1070 | ||
1071 | pci_default_write_config(pdev, PCI_SUBORDINATE_BUS, subordinate, 1); | |
1072 | pci_for_each_device(sec_bus, pci_bus_num(sec_bus), | |
1073 | s390_pci_enumerate_bridge, s); | |
1074 | pci_default_write_config(pdev, PCI_SUBORDINATE_BUS, s->bus_no, 1); | |
1075 | } | |
1076 | ||
1077 | static void s390_pcihost_reset(DeviceState *dev) | |
1078 | { | |
1079 | S390pciState *s = S390_PCI_HOST_BRIDGE(dev); | |
1080 | PCIBus *bus = s->parent_obj.bus; | |
1081 | ||
1082 | s->bus_no = 0; | |
1083 | pci_for_each_device(bus, pci_bus_num(bus), s390_pci_enumerate_bridge, s); | |
1084 | } | |
1085 | ||
8cba80c3 FB |
1086 | static void s390_pcihost_class_init(ObjectClass *klass, void *data) |
1087 | { | |
8cba80c3 FB |
1088 | DeviceClass *dc = DEVICE_CLASS(klass); |
1089 | HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass); | |
1090 | ||
d2f07120 | 1091 | dc->reset = s390_pcihost_reset; |
b576d582 | 1092 | dc->realize = s390_pcihost_realize; |
6069bcde | 1093 | hc->pre_plug = s390_pcihost_pre_plug; |
fa2a7751 | 1094 | hc->plug = s390_pcihost_plug; |
e0998fe8 | 1095 | hc->unplug_request = s390_pcihost_unplug_request; |
fa2a7751 | 1096 | hc->unplug = s390_pcihost_unplug; |
226419d6 | 1097 | msi_nonbroken = true; |
8cba80c3 FB |
1098 | } |
1099 | ||
1100 | static const TypeInfo s390_pcihost_info = { | |
1101 | .name = TYPE_S390_PCI_HOST_BRIDGE, | |
1102 | .parent = TYPE_PCI_HOST_BRIDGE, | |
1103 | .instance_size = sizeof(S390pciState), | |
1104 | .class_init = s390_pcihost_class_init, | |
1105 | .interfaces = (InterfaceInfo[]) { | |
1106 | { TYPE_HOTPLUG_HANDLER }, | |
1107 | { } | |
1108 | } | |
1109 | }; | |
1110 | ||
90a0f9af YMZ |
1111 | static const TypeInfo s390_pcibus_info = { |
1112 | .name = TYPE_S390_PCI_BUS, | |
1113 | .parent = TYPE_BUS, | |
1114 | .instance_size = sizeof(S390PCIBus), | |
1115 | }; | |
1116 | ||
a975a24a | 1117 | static uint16_t s390_pci_generate_uid(S390pciState *s) |
3e5cfba3 YMZ |
1118 | { |
1119 | uint16_t uid = 0; | |
1120 | ||
1121 | do { | |
1122 | uid++; | |
a975a24a | 1123 | if (!s390_pci_find_dev_by_uid(s, uid)) { |
3e5cfba3 YMZ |
1124 | return uid; |
1125 | } | |
1126 | } while (uid < ZPCI_MAX_UID); | |
1127 | ||
1128 | return UID_UNDEFINED; | |
1129 | } | |
1130 | ||
a975a24a | 1131 | static uint32_t s390_pci_generate_fid(S390pciState *s, Error **errp) |
3e5cfba3 YMZ |
1132 | { |
1133 | uint32_t fid = 0; | |
1134 | ||
35b6e94b | 1135 | do { |
a975a24a | 1136 | if (!s390_pci_find_dev_by_fid(s, fid)) { |
3e5cfba3 YMZ |
1137 | return fid; |
1138 | } | |
35b6e94b | 1139 | } while (fid++ != ZPCI_MAX_FID); |
3e5cfba3 YMZ |
1140 | |
1141 | error_setg(errp, "no free fid could be found"); | |
1142 | return 0; | |
1143 | } | |
1144 | ||
1145 | static void s390_pci_device_realize(DeviceState *dev, Error **errp) | |
1146 | { | |
1147 | S390PCIBusDevice *zpci = S390_PCI_DEVICE(dev); | |
a975a24a | 1148 | S390pciState *s = s390_get_phb(); |
3e5cfba3 YMZ |
1149 | |
1150 | if (!zpci->target) { | |
1151 | error_setg(errp, "target must be defined"); | |
1152 | return; | |
1153 | } | |
1154 | ||
a975a24a | 1155 | if (s390_pci_find_dev_by_target(s, zpci->target)) { |
3e5cfba3 YMZ |
1156 | error_setg(errp, "target %s already has an associated zpci device", |
1157 | zpci->target); | |
1158 | return; | |
1159 | } | |
1160 | ||
1161 | if (zpci->uid == UID_UNDEFINED) { | |
a975a24a | 1162 | zpci->uid = s390_pci_generate_uid(s); |
3e5cfba3 YMZ |
1163 | if (!zpci->uid) { |
1164 | error_setg(errp, "no free uid could be found"); | |
1165 | return; | |
1166 | } | |
a975a24a | 1167 | } else if (s390_pci_find_dev_by_uid(s, zpci->uid)) { |
3e5cfba3 YMZ |
1168 | error_setg(errp, "uid %u already in use", zpci->uid); |
1169 | return; | |
1170 | } | |
1171 | ||
1172 | if (!zpci->fid_defined) { | |
1173 | Error *local_error = NULL; | |
1174 | ||
a975a24a | 1175 | zpci->fid = s390_pci_generate_fid(s, &local_error); |
3e5cfba3 YMZ |
1176 | if (local_error) { |
1177 | error_propagate(errp, local_error); | |
1178 | return; | |
1179 | } | |
a975a24a | 1180 | } else if (s390_pci_find_dev_by_fid(s, zpci->fid)) { |
3e5cfba3 YMZ |
1181 | error_setg(errp, "fid %u already in use", zpci->fid); |
1182 | return; | |
1183 | } | |
1184 | ||
1185 | zpci->state = ZPCI_FS_RESERVED; | |
6e92c70c | 1186 | zpci->fmb.format = ZPCI_FMB_FORMAT; |
3e5cfba3 YMZ |
1187 | } |
1188 | ||
1189 | static void s390_pci_device_reset(DeviceState *dev) | |
1190 | { | |
1191 | S390PCIBusDevice *pbdev = S390_PCI_DEVICE(dev); | |
1192 | ||
1193 | switch (pbdev->state) { | |
1194 | case ZPCI_FS_RESERVED: | |
1195 | return; | |
1196 | case ZPCI_FS_STANDBY: | |
1197 | break; | |
1198 | default: | |
1199 | pbdev->fh &= ~FH_MASK_ENABLE; | |
1200 | pbdev->state = ZPCI_FS_DISABLED; | |
1201 | break; | |
1202 | } | |
1203 | ||
1204 | if (pbdev->summary_ind) { | |
1205 | pci_dereg_irqs(pbdev); | |
1206 | } | |
de91ea92 YMZ |
1207 | if (pbdev->iommu->enabled) { |
1208 | pci_dereg_ioat(pbdev->iommu); | |
3e5cfba3 YMZ |
1209 | } |
1210 | ||
6e92c70c | 1211 | fmb_timer_free(pbdev); |
3e5cfba3 YMZ |
1212 | } |
1213 | ||
1214 | static void s390_pci_get_fid(Object *obj, Visitor *v, const char *name, | |
1215 | void *opaque, Error **errp) | |
1216 | { | |
1217 | Property *prop = opaque; | |
1218 | uint32_t *ptr = qdev_get_prop_ptr(DEVICE(obj), prop); | |
1219 | ||
1220 | visit_type_uint32(v, name, ptr, errp); | |
1221 | } | |
1222 | ||
1223 | static void s390_pci_set_fid(Object *obj, Visitor *v, const char *name, | |
1224 | void *opaque, Error **errp) | |
1225 | { | |
1226 | DeviceState *dev = DEVICE(obj); | |
1227 | S390PCIBusDevice *zpci = S390_PCI_DEVICE(obj); | |
1228 | Property *prop = opaque; | |
1229 | uint32_t *ptr = qdev_get_prop_ptr(dev, prop); | |
1230 | ||
1231 | if (dev->realized) { | |
1232 | qdev_prop_set_after_realize(dev, name, errp); | |
1233 | return; | |
1234 | } | |
1235 | ||
1236 | visit_type_uint32(v, name, ptr, errp); | |
1237 | zpci->fid_defined = true; | |
1238 | } | |
1239 | ||
1b6b7d10 | 1240 | static const PropertyInfo s390_pci_fid_propinfo = { |
3e5cfba3 YMZ |
1241 | .name = "zpci_fid", |
1242 | .get = s390_pci_get_fid, | |
1243 | .set = s390_pci_set_fid, | |
1244 | }; | |
1245 | ||
1246 | #define DEFINE_PROP_S390_PCI_FID(_n, _s, _f) \ | |
1247 | DEFINE_PROP(_n, _s, _f, s390_pci_fid_propinfo, uint32_t) | |
1248 | ||
1249 | static Property s390_pci_device_properties[] = { | |
1250 | DEFINE_PROP_UINT16("uid", S390PCIBusDevice, uid, UID_UNDEFINED), | |
1251 | DEFINE_PROP_S390_PCI_FID("fid", S390PCIBusDevice, fid), | |
1252 | DEFINE_PROP_STRING("target", S390PCIBusDevice, target), | |
1253 | DEFINE_PROP_END_OF_LIST(), | |
1254 | }; | |
1255 | ||
aede5d5d CH |
1256 | static const VMStateDescription s390_pci_device_vmstate = { |
1257 | .name = TYPE_S390_PCI_DEVICE, | |
1258 | /* | |
1259 | * TODO: add state handling here, so migration works at least with | |
1260 | * emulated pci devices on s390x | |
1261 | */ | |
1262 | .unmigratable = 1, | |
1263 | }; | |
1264 | ||
3e5cfba3 YMZ |
1265 | static void s390_pci_device_class_init(ObjectClass *klass, void *data) |
1266 | { | |
1267 | DeviceClass *dc = DEVICE_CLASS(klass); | |
1268 | ||
1269 | dc->desc = "zpci device"; | |
bd2aef10 | 1270 | set_bit(DEVICE_CATEGORY_MISC, dc->categories); |
3e5cfba3 YMZ |
1271 | dc->reset = s390_pci_device_reset; |
1272 | dc->bus_type = TYPE_S390_PCI_BUS; | |
1273 | dc->realize = s390_pci_device_realize; | |
1274 | dc->props = s390_pci_device_properties; | |
aede5d5d | 1275 | dc->vmsd = &s390_pci_device_vmstate; |
3e5cfba3 YMZ |
1276 | } |
1277 | ||
1278 | static const TypeInfo s390_pci_device_info = { | |
1279 | .name = TYPE_S390_PCI_DEVICE, | |
1280 | .parent = TYPE_DEVICE, | |
1281 | .instance_size = sizeof(S390PCIBusDevice), | |
1282 | .class_init = s390_pci_device_class_init, | |
1283 | }; | |
1284 | ||
de91ea92 YMZ |
1285 | static TypeInfo s390_pci_iommu_info = { |
1286 | .name = TYPE_S390_PCI_IOMMU, | |
1287 | .parent = TYPE_OBJECT, | |
1288 | .instance_size = sizeof(S390PCIIOMMU), | |
1289 | }; | |
1290 | ||
1221a474 AK |
1291 | static void s390_iommu_memory_region_class_init(ObjectClass *klass, void *data) |
1292 | { | |
1293 | IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_CLASS(klass); | |
1294 | ||
1295 | imrc->translate = s390_translate_iommu; | |
6c5e7402 | 1296 | imrc->replay = s390_pci_iommu_replay; |
1221a474 AK |
1297 | } |
1298 | ||
1299 | static const TypeInfo s390_iommu_memory_region_info = { | |
1300 | .parent = TYPE_IOMMU_MEMORY_REGION, | |
1301 | .name = TYPE_S390_IOMMU_MEMORY_REGION, | |
1302 | .class_init = s390_iommu_memory_region_class_init, | |
1303 | }; | |
1304 | ||
8cba80c3 FB |
1305 | static void s390_pci_register_types(void) |
1306 | { | |
1307 | type_register_static(&s390_pcihost_info); | |
90a0f9af | 1308 | type_register_static(&s390_pcibus_info); |
3e5cfba3 | 1309 | type_register_static(&s390_pci_device_info); |
de91ea92 | 1310 | type_register_static(&s390_pci_iommu_info); |
1221a474 | 1311 | type_register_static(&s390_iommu_memory_region_info); |
8cba80c3 FB |
1312 | } |
1313 | ||
1314 | type_init(s390_pci_register_types) |