1 | /* |
2 | * QEMU sPAPR VIO code |
3 | * |
4 | * Copyright (c) 2010 David Gibson, IBM Corporation <dwg@au1.ibm.com> |
5 | * Based on the s390 virtio bus code: |
6 | * Copyright (c) 2009 Alexander Graf <agraf@suse.de> |
7 | * |
8 | * This library is free software; you can redistribute it and/or |
9 | * modify it under the terms of the GNU Lesser General Public |
10 | * License as published by the Free Software Foundation; either |
11 | * version 2 of the License, or (at your option) any later version. |
12 | * |
13 | * This library is distributed in the hope that it will be useful, |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
16 | * Lesser General Public License for more details. |
17 | * |
18 | * You should have received a copy of the GNU Lesser General Public |
19 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
20 | */ |
21 | |
22 | #include "qemu/osdep.h" |
23 | #include "qemu/error-report.h" |
24 | #include "qapi/error.h" |
25 | #include "qapi/visitor.h" |
26 | #include "hw/irq.h" |
27 | #include "qemu/log.h" |
28 | #include "hw/loader.h" |
29 | #include "elf.h" |
30 | #include "hw/sysbus.h" |
31 | #include "sysemu/kvm.h" |
32 | #include "sysemu/device_tree.h" |
33 | #include "kvm_ppc.h" |
34 | #include "migration/vmstate.h" |
35 | #include "sysemu/qtest.h" |
36 | |
37 | #include "hw/ppc/spapr.h" |
38 | #include "hw/ppc/spapr_vio.h" |
39 | #include "hw/ppc/fdt.h" |
40 | #include "trace.h" |
41 | |
42 | #include <libfdt.h> |
43 | |
44 | #define SPAPR_VIO_REG_BASE 0x71000000 |
45 | |
46 | static char *spapr_vio_get_dev_name(DeviceState *qdev) |
47 | { |
48 | SpaprVioDevice *dev = VIO_SPAPR_DEVICE(qdev); |
49 | SpaprVioDeviceClass *pc = VIO_SPAPR_DEVICE_GET_CLASS(dev); |
50 | |
51 | /* Device tree style name device@reg */ |
52 | return g_strdup_printf("%s@%x" , pc->dt_name, dev->reg); |
53 | } |
54 | |
55 | static void spapr_vio_bus_class_init(ObjectClass *klass, void *data) |
56 | { |
57 | BusClass *k = BUS_CLASS(klass); |
58 | |
59 | k->get_dev_path = spapr_vio_get_dev_name; |
60 | k->get_fw_dev_path = spapr_vio_get_dev_name; |
61 | } |
62 | |
63 | static const TypeInfo spapr_vio_bus_info = { |
64 | .name = TYPE_SPAPR_VIO_BUS, |
65 | .parent = TYPE_BUS, |
66 | .class_init = spapr_vio_bus_class_init, |
67 | .instance_size = sizeof(SpaprVioBus), |
68 | }; |
69 | |
70 | SpaprVioDevice *spapr_vio_find_by_reg(SpaprVioBus *bus, uint32_t reg) |
71 | { |
72 | BusChild *kid; |
73 | SpaprVioDevice *dev = NULL; |
74 | |
75 | QTAILQ_FOREACH(kid, &bus->bus.children, sibling) { |
76 | dev = (SpaprVioDevice *)kid->child; |
77 | if (dev->reg == reg) { |
78 | return dev; |
79 | } |
80 | } |
81 | |
82 | return NULL; |
83 | } |
84 | |
85 | static int vio_make_devnode(SpaprVioDevice *dev, |
86 | void *fdt) |
87 | { |
88 | SpaprVioDeviceClass *pc = VIO_SPAPR_DEVICE_GET_CLASS(dev); |
89 | int vdevice_off, node_off, ret; |
90 | char *dt_name; |
91 | |
92 | vdevice_off = fdt_path_offset(fdt, "/vdevice" ); |
93 | if (vdevice_off < 0) { |
94 | return vdevice_off; |
95 | } |
96 | |
97 | dt_name = spapr_vio_get_dev_name(DEVICE(dev)); |
98 | node_off = fdt_add_subnode(fdt, vdevice_off, dt_name); |
99 | g_free(dt_name); |
100 | if (node_off < 0) { |
101 | return node_off; |
102 | } |
103 | |
104 | ret = fdt_setprop_cell(fdt, node_off, "reg" , dev->reg); |
105 | if (ret < 0) { |
106 | return ret; |
107 | } |
108 | |
109 | if (pc->dt_type) { |
110 | ret = fdt_setprop_string(fdt, node_off, "device_type" , |
111 | pc->dt_type); |
112 | if (ret < 0) { |
113 | return ret; |
114 | } |
115 | } |
116 | |
117 | if (pc->dt_compatible) { |
118 | ret = fdt_setprop_string(fdt, node_off, "compatible" , |
119 | pc->dt_compatible); |
120 | if (ret < 0) { |
121 | return ret; |
122 | } |
123 | } |
124 | |
125 | if (dev->irq) { |
126 | uint32_t ints_prop[2]; |
127 | |
128 | spapr_dt_irq(ints_prop, dev->irq, false); |
129 | ret = fdt_setprop(fdt, node_off, "interrupts" , ints_prop, |
130 | sizeof(ints_prop)); |
131 | if (ret < 0) { |
132 | return ret; |
133 | } |
134 | } |
135 | |
136 | ret = spapr_tcet_dma_dt(fdt, node_off, "ibm,my-dma-window" , dev->tcet); |
137 | if (ret < 0) { |
138 | return ret; |
139 | } |
140 | |
141 | if (pc->devnode) { |
142 | ret = (pc->devnode)(dev, fdt, node_off); |
143 | if (ret < 0) { |
144 | return ret; |
145 | } |
146 | } |
147 | |
148 | return node_off; |
149 | } |
150 | |
151 | /* |
152 | * CRQ handling |
153 | */ |
154 | static target_ulong h_reg_crq(PowerPCCPU *cpu, SpaprMachineState *spapr, |
155 | target_ulong opcode, target_ulong *args) |
156 | { |
157 | target_ulong reg = args[0]; |
158 | target_ulong queue_addr = args[1]; |
159 | target_ulong queue_len = args[2]; |
160 | SpaprVioDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, reg); |
161 | |
162 | if (!dev) { |
163 | hcall_dprintf("Unit 0x" TARGET_FMT_lx " does not exist\n" , reg); |
164 | return H_PARAMETER; |
165 | } |
166 | |
167 | /* We can't grok a queue size bigger than 256M for now */ |
168 | if (queue_len < 0x1000 || queue_len > 0x10000000) { |
169 | hcall_dprintf("Queue size too small or too big (0x" TARGET_FMT_lx |
170 | ")\n" , queue_len); |
171 | return H_PARAMETER; |
172 | } |
173 | |
174 | /* Check queue alignment */ |
175 | if (queue_addr & 0xfff) { |
176 | hcall_dprintf("Queue not aligned (0x" TARGET_FMT_lx ")\n" , queue_addr); |
177 | return H_PARAMETER; |
178 | } |
179 | |
180 | /* Check if device supports CRQs */ |
181 | if (!dev->crq.SendFunc) { |
182 | hcall_dprintf("Device does not support CRQ\n" ); |
183 | return H_NOT_FOUND; |
184 | } |
185 | |
186 | /* Already a queue ? */ |
187 | if (dev->crq.qsize) { |
188 | hcall_dprintf("CRQ already registered\n" ); |
189 | return H_RESOURCE; |
190 | } |
191 | dev->crq.qladdr = queue_addr; |
192 | dev->crq.qsize = queue_len; |
193 | dev->crq.qnext = 0; |
194 | |
195 | trace_spapr_vio_h_reg_crq(reg, queue_addr, queue_len); |
196 | return H_SUCCESS; |
197 | } |
198 | |
199 | static target_ulong free_crq(SpaprVioDevice *dev) |
200 | { |
201 | dev->crq.qladdr = 0; |
202 | dev->crq.qsize = 0; |
203 | dev->crq.qnext = 0; |
204 | |
205 | trace_spapr_vio_free_crq(dev->reg); |
206 | |
207 | return H_SUCCESS; |
208 | } |
209 | |
210 | static target_ulong h_free_crq(PowerPCCPU *cpu, SpaprMachineState *spapr, |
211 | target_ulong opcode, target_ulong *args) |
212 | { |
213 | target_ulong reg = args[0]; |
214 | SpaprVioDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, reg); |
215 | |
216 | if (!dev) { |
217 | hcall_dprintf("Unit 0x" TARGET_FMT_lx " does not exist\n" , reg); |
218 | return H_PARAMETER; |
219 | } |
220 | |
221 | return free_crq(dev); |
222 | } |
223 | |
224 | static target_ulong h_send_crq(PowerPCCPU *cpu, SpaprMachineState *spapr, |
225 | target_ulong opcode, target_ulong *args) |
226 | { |
227 | target_ulong reg = args[0]; |
228 | target_ulong msg_hi = args[1]; |
229 | target_ulong msg_lo = args[2]; |
230 | SpaprVioDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, reg); |
231 | uint64_t crq_mangle[2]; |
232 | |
233 | if (!dev) { |
234 | hcall_dprintf("Unit 0x" TARGET_FMT_lx " does not exist\n" , reg); |
235 | return H_PARAMETER; |
236 | } |
237 | crq_mangle[0] = cpu_to_be64(msg_hi); |
238 | crq_mangle[1] = cpu_to_be64(msg_lo); |
239 | |
240 | if (dev->crq.SendFunc) { |
241 | return dev->crq.SendFunc(dev, (uint8_t *)crq_mangle); |
242 | } |
243 | |
244 | return H_HARDWARE; |
245 | } |
246 | |
247 | static target_ulong h_enable_crq(PowerPCCPU *cpu, SpaprMachineState *spapr, |
248 | target_ulong opcode, target_ulong *args) |
249 | { |
250 | target_ulong reg = args[0]; |
251 | SpaprVioDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, reg); |
252 | |
253 | if (!dev) { |
254 | hcall_dprintf("Unit 0x" TARGET_FMT_lx " does not exist\n" , reg); |
255 | return H_PARAMETER; |
256 | } |
257 | |
258 | return 0; |
259 | } |
260 | |
261 | /* Returns negative error, 0 success, or positive: queue full */ |
262 | int spapr_vio_send_crq(SpaprVioDevice *dev, uint8_t *crq) |
263 | { |
264 | int rc; |
265 | uint8_t byte; |
266 | |
267 | if (!dev->crq.qsize) { |
268 | error_report("spapr_vio_send_creq on uninitialized queue" ); |
269 | return -1; |
270 | } |
271 | |
272 | /* Maybe do a fast path for KVM just writing to the pages */ |
273 | rc = spapr_vio_dma_read(dev, dev->crq.qladdr + dev->crq.qnext, &byte, 1); |
274 | if (rc) { |
275 | return rc; |
276 | } |
277 | if (byte != 0) { |
278 | return 1; |
279 | } |
280 | |
281 | rc = spapr_vio_dma_write(dev, dev->crq.qladdr + dev->crq.qnext + 8, |
282 | &crq[8], 8); |
283 | if (rc) { |
284 | return rc; |
285 | } |
286 | |
287 | kvmppc_eieio(); |
288 | |
289 | rc = spapr_vio_dma_write(dev, dev->crq.qladdr + dev->crq.qnext, crq, 8); |
290 | if (rc) { |
291 | return rc; |
292 | } |
293 | |
294 | dev->crq.qnext = (dev->crq.qnext + 16) % dev->crq.qsize; |
295 | |
296 | if (dev->signal_state & 1) { |
297 | qemu_irq_pulse(spapr_vio_qirq(dev)); |
298 | } |
299 | |
300 | return 0; |
301 | } |
302 | |
303 | /* "quiesce" handling */ |
304 | |
305 | static void spapr_vio_quiesce_one(SpaprVioDevice *dev) |
306 | { |
307 | if (dev->tcet) { |
308 | device_reset(DEVICE(dev->tcet)); |
309 | } |
310 | free_crq(dev); |
311 | } |
312 | |
313 | void spapr_vio_set_bypass(SpaprVioDevice *dev, bool bypass) |
314 | { |
315 | if (!dev->tcet) { |
316 | return; |
317 | } |
318 | |
319 | memory_region_set_enabled(&dev->mrbypass, bypass); |
320 | memory_region_set_enabled(spapr_tce_get_iommu(dev->tcet), !bypass); |
321 | |
322 | dev->tcet->bypass = bypass; |
323 | } |
324 | |
325 | static void rtas_set_tce_bypass(PowerPCCPU *cpu, SpaprMachineState *spapr, |
326 | uint32_t token, |
327 | uint32_t nargs, target_ulong args, |
328 | uint32_t nret, target_ulong rets) |
329 | { |
330 | SpaprVioBus *bus = spapr->vio_bus; |
331 | SpaprVioDevice *dev; |
332 | uint32_t unit, enable; |
333 | |
334 | if (nargs != 2) { |
335 | rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); |
336 | return; |
337 | } |
338 | unit = rtas_ld(args, 0); |
339 | enable = rtas_ld(args, 1); |
340 | dev = spapr_vio_find_by_reg(bus, unit); |
341 | if (!dev) { |
342 | rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); |
343 | return; |
344 | } |
345 | |
346 | if (!dev->tcet) { |
347 | rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); |
348 | return; |
349 | } |
350 | |
351 | spapr_vio_set_bypass(dev, !!enable); |
352 | |
353 | rtas_st(rets, 0, RTAS_OUT_SUCCESS); |
354 | } |
355 | |
356 | static void rtas_quiesce(PowerPCCPU *cpu, SpaprMachineState *spapr, |
357 | uint32_t token, |
358 | uint32_t nargs, target_ulong args, |
359 | uint32_t nret, target_ulong rets) |
360 | { |
361 | SpaprVioBus *bus = spapr->vio_bus; |
362 | BusChild *kid; |
363 | SpaprVioDevice *dev = NULL; |
364 | |
365 | if (nargs != 0) { |
366 | rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); |
367 | return; |
368 | } |
369 | |
370 | QTAILQ_FOREACH(kid, &bus->bus.children, sibling) { |
371 | dev = (SpaprVioDevice *)kid->child; |
372 | spapr_vio_quiesce_one(dev); |
373 | } |
374 | |
375 | rtas_st(rets, 0, RTAS_OUT_SUCCESS); |
376 | } |
377 | |
378 | static SpaprVioDevice *reg_conflict(SpaprVioDevice *dev) |
379 | { |
380 | SpaprVioBus *bus = SPAPR_VIO_BUS(dev->qdev.parent_bus); |
381 | BusChild *kid; |
382 | SpaprVioDevice *other; |
383 | |
384 | /* |
385 | * Check for a device other than the given one which is already |
386 | * using the requested address. We have to open code this because |
387 | * the given dev might already be in the list. |
388 | */ |
389 | QTAILQ_FOREACH(kid, &bus->bus.children, sibling) { |
390 | other = VIO_SPAPR_DEVICE(kid->child); |
391 | |
392 | if (other != dev && other->reg == dev->reg) { |
393 | return other; |
394 | } |
395 | } |
396 | |
397 | return 0; |
398 | } |
399 | |
400 | static void spapr_vio_busdev_reset(DeviceState *qdev) |
401 | { |
402 | SpaprVioDevice *dev = VIO_SPAPR_DEVICE(qdev); |
403 | SpaprVioDeviceClass *pc = VIO_SPAPR_DEVICE_GET_CLASS(dev); |
404 | |
405 | /* Shut down the request queue and TCEs if necessary */ |
406 | spapr_vio_quiesce_one(dev); |
407 | |
408 | dev->signal_state = 0; |
409 | |
410 | spapr_vio_set_bypass(dev, false); |
411 | if (pc->reset) { |
412 | pc->reset(dev); |
413 | } |
414 | } |
415 | |
416 | /* |
417 | * The register property of a VIO device is defined in livirt using |
418 | * 0x1000 as a base register number plus a 0x1000 increment. For the |
419 | * VIO tty device, the base number is changed to 0x30000000. QEMU uses |
420 | * a base register number of 0x71000000 and then a simple increment. |
421 | * |
422 | * The formula below tries to compute a unique index number from the |
423 | * register value that will be used to define the IRQ number of the |
424 | * VIO device. |
425 | * |
426 | * A maximum of 256 VIO devices is covered. Collisions are possible |
427 | * but they will be detected when the IRQ is claimed. |
428 | */ |
429 | static inline uint32_t spapr_vio_reg_to_irq(uint32_t reg) |
430 | { |
431 | uint32_t irq; |
432 | |
433 | if (reg >= SPAPR_VIO_REG_BASE) { |
434 | /* |
435 | * VIO device register values when allocated by QEMU. For |
436 | * these, we simply mask the high bits to fit the overall |
437 | * range: [0x00 - 0xff]. |
438 | * |
439 | * The nvram VIO device (reg=0x71000000) is a static device of |
440 | * the pseries machine and so is always allocated by QEMU. Its |
441 | * IRQ number is 0x0. |
442 | */ |
443 | irq = reg & 0xff; |
444 | |
445 | } else if (reg >= 0x30000000) { |
446 | /* |
447 | * VIO tty devices register values, when allocated by livirt, |
448 | * are mapped in range [0xf0 - 0xff], gives us a maximum of 16 |
449 | * vtys. |
450 | */ |
451 | irq = 0xf0 | ((reg >> 12) & 0xf); |
452 | |
453 | } else { |
454 | /* |
455 | * Other VIO devices register values, when allocated by |
456 | * livirt, should be mapped in range [0x00 - 0xef]. Conflicts |
457 | * will be detected when IRQ is claimed. |
458 | */ |
459 | irq = (reg >> 12) & 0xff; |
460 | } |
461 | |
462 | return SPAPR_IRQ_VIO | irq; |
463 | } |
464 | |
465 | static void spapr_vio_busdev_realize(DeviceState *qdev, Error **errp) |
466 | { |
467 | SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); |
468 | SpaprVioDevice *dev = (SpaprVioDevice *)qdev; |
469 | SpaprVioDeviceClass *pc = VIO_SPAPR_DEVICE_GET_CLASS(dev); |
470 | char *id; |
471 | Error *local_err = NULL; |
472 | |
473 | if (dev->reg != -1) { |
474 | /* |
475 | * Explicitly assigned address, just verify that no-one else |
476 | * is using it. other mechanism). We have to open code this |
477 | * rather than using spapr_vio_find_by_reg() because sdev |
478 | * itself is already in the list. |
479 | */ |
480 | SpaprVioDevice *other = reg_conflict(dev); |
481 | |
482 | if (other) { |
483 | error_setg(errp, "%s and %s devices conflict at address %#x" , |
484 | object_get_typename(OBJECT(qdev)), |
485 | object_get_typename(OBJECT(&other->qdev)), |
486 | dev->reg); |
487 | return; |
488 | } |
489 | } else { |
490 | /* Need to assign an address */ |
491 | SpaprVioBus *bus = SPAPR_VIO_BUS(dev->qdev.parent_bus); |
492 | |
493 | do { |
494 | dev->reg = bus->next_reg++; |
495 | } while (reg_conflict(dev)); |
496 | } |
497 | |
498 | /* Don't overwrite ids assigned on the command line */ |
499 | if (!dev->qdev.id) { |
500 | id = spapr_vio_get_dev_name(DEVICE(dev)); |
501 | dev->qdev.id = id; |
502 | } |
503 | |
504 | dev->irq = spapr_vio_reg_to_irq(dev->reg); |
505 | |
506 | if (SPAPR_MACHINE_GET_CLASS(spapr)->legacy_irq_allocation) { |
507 | dev->irq = spapr_irq_findone(spapr, &local_err); |
508 | if (local_err) { |
509 | error_propagate(errp, local_err); |
510 | return; |
511 | } |
512 | } |
513 | |
514 | spapr_irq_claim(spapr, dev->irq, false, &local_err); |
515 | if (local_err) { |
516 | error_propagate(errp, local_err); |
517 | return; |
518 | } |
519 | |
520 | if (pc->rtce_window_size) { |
521 | uint32_t liobn = SPAPR_VIO_LIOBN(dev->reg); |
522 | |
523 | memory_region_init(&dev->mrroot, OBJECT(dev), "iommu-spapr-root" , |
524 | ram_size); |
525 | memory_region_init_alias(&dev->mrbypass, OBJECT(dev), |
526 | "iommu-spapr-bypass" , get_system_memory(), |
527 | 0, ram_size); |
528 | memory_region_add_subregion_overlap(&dev->mrroot, 0, &dev->mrbypass, 1); |
529 | address_space_init(&dev->as, &dev->mrroot, qdev->id); |
530 | |
531 | dev->tcet = spapr_tce_new_table(qdev, liobn); |
532 | spapr_tce_table_enable(dev->tcet, SPAPR_TCE_PAGE_SHIFT, 0, |
533 | pc->rtce_window_size >> SPAPR_TCE_PAGE_SHIFT); |
534 | dev->tcet->vdev = dev; |
535 | memory_region_add_subregion_overlap(&dev->mrroot, 0, |
536 | spapr_tce_get_iommu(dev->tcet), 2); |
537 | } |
538 | |
539 | pc->realize(dev, errp); |
540 | } |
541 | |
542 | static target_ulong h_vio_signal(PowerPCCPU *cpu, SpaprMachineState *spapr, |
543 | target_ulong opcode, |
544 | target_ulong *args) |
545 | { |
546 | target_ulong reg = args[0]; |
547 | target_ulong mode = args[1]; |
548 | SpaprVioDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, reg); |
549 | SpaprVioDeviceClass *pc; |
550 | |
551 | if (!dev) { |
552 | return H_PARAMETER; |
553 | } |
554 | |
555 | pc = VIO_SPAPR_DEVICE_GET_CLASS(dev); |
556 | |
557 | if (mode & ~pc->signal_mask) { |
558 | return H_PARAMETER; |
559 | } |
560 | |
561 | dev->signal_state = mode; |
562 | |
563 | return H_SUCCESS; |
564 | } |
565 | |
566 | SpaprVioBus *spapr_vio_bus_init(void) |
567 | { |
568 | SpaprVioBus *bus; |
569 | BusState *qbus; |
570 | DeviceState *dev; |
571 | |
572 | /* Create bridge device */ |
573 | dev = qdev_create(NULL, TYPE_SPAPR_VIO_BRIDGE); |
574 | qdev_init_nofail(dev); |
575 | |
576 | /* Create bus on bridge device */ |
577 | qbus = qbus_create(TYPE_SPAPR_VIO_BUS, dev, "spapr-vio" ); |
578 | bus = SPAPR_VIO_BUS(qbus); |
579 | bus->next_reg = SPAPR_VIO_REG_BASE; |
580 | |
581 | /* hcall-vio */ |
582 | spapr_register_hypercall(H_VIO_SIGNAL, h_vio_signal); |
583 | |
584 | /* hcall-crq */ |
585 | spapr_register_hypercall(H_REG_CRQ, h_reg_crq); |
586 | spapr_register_hypercall(H_FREE_CRQ, h_free_crq); |
587 | spapr_register_hypercall(H_SEND_CRQ, h_send_crq); |
588 | spapr_register_hypercall(H_ENABLE_CRQ, h_enable_crq); |
589 | |
590 | /* RTAS calls */ |
591 | spapr_rtas_register(RTAS_IBM_SET_TCE_BYPASS, "ibm,set-tce-bypass" , |
592 | rtas_set_tce_bypass); |
593 | spapr_rtas_register(RTAS_QUIESCE, "quiesce" , rtas_quiesce); |
594 | |
595 | return bus; |
596 | } |
597 | |
598 | static void spapr_vio_bridge_class_init(ObjectClass *klass, void *data) |
599 | { |
600 | DeviceClass *dc = DEVICE_CLASS(klass); |
601 | |
602 | dc->fw_name = "vdevice" ; |
603 | } |
604 | |
605 | static const TypeInfo spapr_vio_bridge_info = { |
606 | .name = TYPE_SPAPR_VIO_BRIDGE, |
607 | .parent = TYPE_SYS_BUS_DEVICE, |
608 | .class_init = spapr_vio_bridge_class_init, |
609 | }; |
610 | |
611 | const VMStateDescription vmstate_spapr_vio = { |
612 | .name = "spapr_vio" , |
613 | .version_id = 1, |
614 | .minimum_version_id = 1, |
615 | .fields = (VMStateField[]) { |
616 | /* Sanity check */ |
617 | VMSTATE_UINT32_EQUAL(reg, SpaprVioDevice, NULL), |
618 | VMSTATE_UINT32_EQUAL(irq, SpaprVioDevice, NULL), |
619 | |
620 | /* General VIO device state */ |
621 | VMSTATE_UINT64(signal_state, SpaprVioDevice), |
622 | VMSTATE_UINT64(crq.qladdr, SpaprVioDevice), |
623 | VMSTATE_UINT32(crq.qsize, SpaprVioDevice), |
624 | VMSTATE_UINT32(crq.qnext, SpaprVioDevice), |
625 | |
626 | VMSTATE_END_OF_LIST() |
627 | }, |
628 | }; |
629 | |
630 | static void vio_spapr_device_class_init(ObjectClass *klass, void *data) |
631 | { |
632 | DeviceClass *k = DEVICE_CLASS(klass); |
633 | k->realize = spapr_vio_busdev_realize; |
634 | k->reset = spapr_vio_busdev_reset; |
635 | k->bus_type = TYPE_SPAPR_VIO_BUS; |
636 | } |
637 | |
638 | static const TypeInfo spapr_vio_type_info = { |
639 | .name = TYPE_VIO_SPAPR_DEVICE, |
640 | .parent = TYPE_DEVICE, |
641 | .instance_size = sizeof(SpaprVioDevice), |
642 | .abstract = true, |
643 | .class_size = sizeof(SpaprVioDeviceClass), |
644 | .class_init = vio_spapr_device_class_init, |
645 | }; |
646 | |
647 | static void spapr_vio_register_types(void) |
648 | { |
649 | type_register_static(&spapr_vio_bus_info); |
650 | type_register_static(&spapr_vio_bridge_info); |
651 | type_register_static(&spapr_vio_type_info); |
652 | } |
653 | |
654 | type_init(spapr_vio_register_types) |
655 | |
656 | static int compare_reg(const void *p1, const void *p2) |
657 | { |
658 | SpaprVioDevice const *dev1, *dev2; |
659 | |
660 | dev1 = (SpaprVioDevice *)*(DeviceState **)p1; |
661 | dev2 = (SpaprVioDevice *)*(DeviceState **)p2; |
662 | |
663 | if (dev1->reg < dev2->reg) { |
664 | return -1; |
665 | } |
666 | if (dev1->reg == dev2->reg) { |
667 | return 0; |
668 | } |
669 | |
670 | /* dev1->reg > dev2->reg */ |
671 | return 1; |
672 | } |
673 | |
674 | void spapr_dt_vdevice(SpaprVioBus *bus, void *fdt) |
675 | { |
676 | DeviceState *qdev, **qdevs; |
677 | BusChild *kid; |
678 | int i, num, ret = 0; |
679 | int node; |
680 | |
681 | _FDT(node = fdt_add_subnode(fdt, 0, "vdevice" )); |
682 | |
683 | _FDT(fdt_setprop_string(fdt, node, "device_type" , "vdevice" )); |
684 | _FDT(fdt_setprop_string(fdt, node, "compatible" , "IBM,vdevice" )); |
685 | _FDT(fdt_setprop_cell(fdt, node, "#address-cells" , 1)); |
686 | _FDT(fdt_setprop_cell(fdt, node, "#size-cells" , 0)); |
687 | _FDT(fdt_setprop_cell(fdt, node, "#interrupt-cells" , 2)); |
688 | _FDT(fdt_setprop(fdt, node, "interrupt-controller" , NULL, 0)); |
689 | |
690 | /* Count qdevs on the bus list */ |
691 | num = 0; |
692 | QTAILQ_FOREACH(kid, &bus->bus.children, sibling) { |
693 | num++; |
694 | } |
695 | |
696 | /* Copy out into an array of pointers */ |
697 | qdevs = g_new(DeviceState *, num); |
698 | num = 0; |
699 | QTAILQ_FOREACH(kid, &bus->bus.children, sibling) { |
700 | qdevs[num++] = kid->child; |
701 | } |
702 | |
703 | /* Sort the array */ |
704 | qsort(qdevs, num, sizeof(qdev), compare_reg); |
705 | |
706 | /* Hack alert. Give the devices to libfdt in reverse order, we happen |
707 | * to know that will mean they are in forward order in the tree. */ |
708 | for (i = num - 1; i >= 0; i--) { |
709 | SpaprVioDevice *dev = (SpaprVioDevice *)(qdevs[i]); |
710 | SpaprVioDeviceClass *vdc = VIO_SPAPR_DEVICE_GET_CLASS(dev); |
711 | |
712 | ret = vio_make_devnode(dev, fdt); |
713 | if (ret < 0) { |
714 | error_report("Couldn't create device node /vdevice/%s@%" PRIx32, |
715 | vdc->dt_name, dev->reg); |
716 | exit(1); |
717 | } |
718 | } |
719 | |
720 | g_free(qdevs); |
721 | } |
722 | |
723 | gchar *spapr_vio_stdout_path(SpaprVioBus *bus) |
724 | { |
725 | SpaprVioDevice *dev; |
726 | char *name, *path; |
727 | |
728 | dev = spapr_vty_get_default(bus); |
729 | if (!dev) { |
730 | return NULL; |
731 | } |
732 | |
733 | name = spapr_vio_get_dev_name(DEVICE(dev)); |
734 | path = g_strdup_printf("/vdevice/%s" , name); |
735 | |
736 | g_free(name); |
737 | return path; |
738 | } |
739 | |