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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 | } |