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24#include "qemu/osdep.h"
25#include "qapi/error.h"
26#include <libfdt.h>
27#ifdef CONFIG_LINUX
28#include <linux/vfio.h>
29#endif
30#include "hw/arm/sysbus-fdt.h"
31#include "qemu/error-report.h"
32#include "sysemu/device_tree.h"
33#include "sysemu/tpm.h"
34#include "hw/platform-bus.h"
35#include "hw/vfio/vfio-platform.h"
36#include "hw/vfio/vfio-calxeda-xgmac.h"
37#include "hw/vfio/vfio-amd-xgbe.h"
38#include "hw/display/ramfb.h"
39#include "hw/arm/fdt.h"
40
41
42
43
44
45typedef struct PlatformBusFDTData {
46 void *fdt;
47 int irq_start;
48 const char *pbus_node_name;
49 PlatformBusDevice *pbus;
50} PlatformBusFDTData;
51
52
53typedef struct BindingEntry {
54 const char *typename;
55 const char *compat;
56 int (*add_fn)(SysBusDevice *sbdev, void *opaque);
57 bool (*match_fn)(SysBusDevice *sbdev, const struct BindingEntry *combo);
58} BindingEntry;
59
60
61
62typedef struct HostProperty {
63 const char *name;
64 bool optional;
65} HostProperty;
66
67#ifdef CONFIG_LINUX
68
69
70
71
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81
82
83
84static void copy_properties_from_host(HostProperty *props, int nb_props,
85 void *host_fdt, void *guest_fdt,
86 char *node_path, char *nodename)
87{
88 int i, prop_len;
89 const void *r;
90 Error *err = NULL;
91
92 for (i = 0; i < nb_props; i++) {
93 r = qemu_fdt_getprop(host_fdt, node_path,
94 props[i].name,
95 &prop_len,
96 &err);
97 if (r) {
98 qemu_fdt_setprop(guest_fdt, nodename,
99 props[i].name, r, prop_len);
100 } else {
101 if (props[i].optional && prop_len == -FDT_ERR_NOTFOUND) {
102
103 error_free(err);
104 } else {
105 error_report_err(err);
106 }
107 if (!props[i].optional) {
108
109 exit(1);
110 }
111 err = NULL;
112 }
113 }
114}
115
116
117static HostProperty clock_copied_properties[] = {
118 {"compatible", false},
119 {"#clock-cells", false},
120 {"clock-frequency", true},
121 {"clock-output-names", true},
122};
123
124
125
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127
128
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132
133
134
135
136static void fdt_build_clock_node(void *host_fdt, void *guest_fdt,
137 uint32_t host_phandle,
138 uint32_t guest_phandle)
139{
140 char *node_path = NULL;
141 char *nodename;
142 const void *r;
143 int ret, node_offset, prop_len, path_len = 16;
144
145 node_offset = fdt_node_offset_by_phandle(host_fdt, host_phandle);
146 if (node_offset <= 0) {
147 error_report("not able to locate clock handle %d in host device tree",
148 host_phandle);
149 exit(1);
150 }
151 node_path = g_malloc(path_len);
152 while ((ret = fdt_get_path(host_fdt, node_offset, node_path, path_len))
153 == -FDT_ERR_NOSPACE) {
154 path_len += 16;
155 node_path = g_realloc(node_path, path_len);
156 }
157 if (ret < 0) {
158 error_report("not able to retrieve node path for clock handle %d",
159 host_phandle);
160 exit(1);
161 }
162
163 r = qemu_fdt_getprop(host_fdt, node_path, "compatible", &prop_len,
164 &error_fatal);
165 if (strcmp(r, "fixed-clock")) {
166 error_report("clock handle %d is not a fixed clock", host_phandle);
167 exit(1);
168 }
169
170 nodename = strrchr(node_path, '/');
171 qemu_fdt_add_subnode(guest_fdt, nodename);
172
173 copy_properties_from_host(clock_copied_properties,
174 ARRAY_SIZE(clock_copied_properties),
175 host_fdt, guest_fdt,
176 node_path, nodename);
177
178 qemu_fdt_setprop_cell(guest_fdt, nodename, "phandle", guest_phandle);
179
180 g_free(node_path);
181}
182
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186
187
188
189
190
191static char *sysfs_to_dt_name(const char *sysfs_name)
192{
193 gchar **substrings = g_strsplit(sysfs_name, ".", 2);
194 char *dt_name = NULL;
195
196 if (!substrings || !substrings[0] || !substrings[1]) {
197 goto out;
198 }
199 dt_name = g_strdup_printf("%s@%s", substrings[1], substrings[0]);
200out:
201 g_strfreev(substrings);
202 return dt_name;
203}
204
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210
211
212
213static int add_calxeda_midway_xgmac_fdt_node(SysBusDevice *sbdev, void *opaque)
214{
215 PlatformBusFDTData *data = opaque;
216 PlatformBusDevice *pbus = data->pbus;
217 void *fdt = data->fdt;
218 const char *parent_node = data->pbus_node_name;
219 int compat_str_len, i;
220 char *nodename;
221 uint32_t *irq_attr, *reg_attr;
222 uint64_t mmio_base, irq_number;
223 VFIOPlatformDevice *vdev = VFIO_PLATFORM_DEVICE(sbdev);
224 VFIODevice *vbasedev = &vdev->vbasedev;
225
226 mmio_base = platform_bus_get_mmio_addr(pbus, sbdev, 0);
227 nodename = g_strdup_printf("%s/%s@%" PRIx64, parent_node,
228 vbasedev->name, mmio_base);
229 qemu_fdt_add_subnode(fdt, nodename);
230
231 compat_str_len = strlen(vdev->compat) + 1;
232 qemu_fdt_setprop(fdt, nodename, "compatible",
233 vdev->compat, compat_str_len);
234
235 qemu_fdt_setprop(fdt, nodename, "dma-coherent", "", 0);
236
237 reg_attr = g_new(uint32_t, vbasedev->num_regions * 2);
238 for (i = 0; i < vbasedev->num_regions; i++) {
239 mmio_base = platform_bus_get_mmio_addr(pbus, sbdev, i);
240 reg_attr[2 * i] = cpu_to_be32(mmio_base);
241 reg_attr[2 * i + 1] = cpu_to_be32(
242 memory_region_size(vdev->regions[i]->mem));
243 }
244 qemu_fdt_setprop(fdt, nodename, "reg", reg_attr,
245 vbasedev->num_regions * 2 * sizeof(uint32_t));
246
247 irq_attr = g_new(uint32_t, vbasedev->num_irqs * 3);
248 for (i = 0; i < vbasedev->num_irqs; i++) {
249 irq_number = platform_bus_get_irqn(pbus, sbdev , i)
250 + data->irq_start;
251 irq_attr[3 * i] = cpu_to_be32(GIC_FDT_IRQ_TYPE_SPI);
252 irq_attr[3 * i + 1] = cpu_to_be32(irq_number);
253 irq_attr[3 * i + 2] = cpu_to_be32(GIC_FDT_IRQ_FLAGS_LEVEL_HI);
254 }
255 qemu_fdt_setprop(fdt, nodename, "interrupts",
256 irq_attr, vbasedev->num_irqs * 3 * sizeof(uint32_t));
257 g_free(irq_attr);
258 g_free(reg_attr);
259 g_free(nodename);
260 return 0;
261}
262
263
264static HostProperty amd_xgbe_copied_properties[] = {
265 {"compatible", false},
266 {"dma-coherent", true},
267 {"amd,per-channel-interrupt", true},
268 {"phy-mode", false},
269 {"mac-address", true},
270 {"amd,speed-set", false},
271 {"amd,serdes-blwc", true},
272 {"amd,serdes-cdr-rate", true},
273 {"amd,serdes-pq-skew", true},
274 {"amd,serdes-tx-amp", true},
275 {"amd,serdes-dfe-tap-config", true},
276 {"amd,serdes-dfe-tap-enable", true},
277 {"clock-names", false},
278};
279
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288
289
290static int add_amd_xgbe_fdt_node(SysBusDevice *sbdev, void *opaque)
291{
292 PlatformBusFDTData *data = opaque;
293 PlatformBusDevice *pbus = data->pbus;
294 VFIOPlatformDevice *vdev = VFIO_PLATFORM_DEVICE(sbdev);
295 VFIODevice *vbasedev = &vdev->vbasedev;
296 VFIOINTp *intp;
297 const char *parent_node = data->pbus_node_name;
298 char **node_path, *nodename, *dt_name;
299 void *guest_fdt = data->fdt, *host_fdt;
300 const void *r;
301 int i, prop_len;
302 uint32_t *irq_attr, *reg_attr, *host_clock_phandles;
303 uint64_t mmio_base, irq_number;
304 uint32_t guest_clock_phandles[2];
305
306 host_fdt = load_device_tree_from_sysfs();
307
308 dt_name = sysfs_to_dt_name(vbasedev->name);
309 if (!dt_name) {
310 error_report("%s incorrect sysfs device name %s",
311 __func__, vbasedev->name);
312 exit(1);
313 }
314 node_path = qemu_fdt_node_path(host_fdt, dt_name, vdev->compat,
315 &error_fatal);
316 if (!node_path || !node_path[0]) {
317 error_report("%s unable to retrieve node path for %s/%s",
318 __func__, dt_name, vdev->compat);
319 exit(1);
320 }
321
322 if (node_path[1]) {
323 error_report("%s more than one node matching %s/%s!",
324 __func__, dt_name, vdev->compat);
325 exit(1);
326 }
327
328 g_free(dt_name);
329
330 if (vbasedev->num_regions != 5) {
331 error_report("%s Does the host dt node combine XGBE/PHY?", __func__);
332 exit(1);
333 }
334
335
336 r = qemu_fdt_getprop(host_fdt, node_path[0], "clocks",
337 &prop_len, &error_fatal);
338 if (prop_len != 8) {
339 error_report("%s clocks property should contain 2 handles", __func__);
340 exit(1);
341 }
342 host_clock_phandles = (uint32_t *)r;
343 guest_clock_phandles[0] = qemu_fdt_alloc_phandle(guest_fdt);
344 guest_clock_phandles[1] = qemu_fdt_alloc_phandle(guest_fdt);
345
346
347
348
349
350
351 fdt_build_clock_node(host_fdt, guest_fdt,
352 be32_to_cpu(host_clock_phandles[0]),
353 guest_clock_phandles[0]);
354
355 fdt_build_clock_node(host_fdt, guest_fdt,
356 be32_to_cpu(host_clock_phandles[1]),
357 guest_clock_phandles[1]);
358
359
360 mmio_base = platform_bus_get_mmio_addr(pbus, sbdev, 0);
361 nodename = g_strdup_printf("%s/%s@%" PRIx64, parent_node,
362 vbasedev->name, mmio_base);
363 qemu_fdt_add_subnode(guest_fdt, nodename);
364
365 copy_properties_from_host(amd_xgbe_copied_properties,
366 ARRAY_SIZE(amd_xgbe_copied_properties),
367 host_fdt, guest_fdt,
368 node_path[0], nodename);
369
370 qemu_fdt_setprop_cells(guest_fdt, nodename, "clocks",
371 guest_clock_phandles[0],
372 guest_clock_phandles[1]);
373
374 reg_attr = g_new(uint32_t, vbasedev->num_regions * 2);
375 for (i = 0; i < vbasedev->num_regions; i++) {
376 mmio_base = platform_bus_get_mmio_addr(pbus, sbdev, i);
377 reg_attr[2 * i] = cpu_to_be32(mmio_base);
378 reg_attr[2 * i + 1] = cpu_to_be32(
379 memory_region_size(vdev->regions[i]->mem));
380 }
381 qemu_fdt_setprop(guest_fdt, nodename, "reg", reg_attr,
382 vbasedev->num_regions * 2 * sizeof(uint32_t));
383
384 irq_attr = g_new(uint32_t, vbasedev->num_irqs * 3);
385 for (i = 0; i < vbasedev->num_irqs; i++) {
386 irq_number = platform_bus_get_irqn(pbus, sbdev , i)
387 + data->irq_start;
388 irq_attr[3 * i] = cpu_to_be32(GIC_FDT_IRQ_TYPE_SPI);
389 irq_attr[3 * i + 1] = cpu_to_be32(irq_number);
390
391
392
393
394
395 QLIST_FOREACH(intp, &vdev->intp_list, next) {
396 if (intp->pin == i) {
397 break;
398 }
399 }
400 if (intp->flags & VFIO_IRQ_INFO_AUTOMASKED) {
401 irq_attr[3 * i + 2] = cpu_to_be32(GIC_FDT_IRQ_FLAGS_LEVEL_HI);
402 } else {
403 irq_attr[3 * i + 2] = cpu_to_be32(GIC_FDT_IRQ_FLAGS_EDGE_LO_HI);
404 }
405 }
406 qemu_fdt_setprop(guest_fdt, nodename, "interrupts",
407 irq_attr, vbasedev->num_irqs * 3 * sizeof(uint32_t));
408
409 g_free(host_fdt);
410 g_strfreev(node_path);
411 g_free(irq_attr);
412 g_free(reg_attr);
413 g_free(nodename);
414 return 0;
415}
416
417
418static bool vfio_platform_match(SysBusDevice *sbdev,
419 const BindingEntry *entry)
420{
421 VFIOPlatformDevice *vdev = VFIO_PLATFORM_DEVICE(sbdev);
422 const char *compat;
423 unsigned int n;
424
425 for (n = vdev->num_compat, compat = vdev->compat; n > 0;
426 n--, compat += strlen(compat) + 1) {
427 if (!strcmp(entry->compat, compat)) {
428 return true;
429 }
430 }
431
432 return false;
433}
434
435#define VFIO_PLATFORM_BINDING(compat, add_fn) \
436 {TYPE_VFIO_PLATFORM, (compat), (add_fn), vfio_platform_match}
437
438#endif
439
440#ifdef CONFIG_TPM
441
442
443
444
445
446
447
448static int add_tpm_tis_fdt_node(SysBusDevice *sbdev, void *opaque)
449{
450 PlatformBusFDTData *data = opaque;
451 PlatformBusDevice *pbus = data->pbus;
452 void *fdt = data->fdt;
453 const char *parent_node = data->pbus_node_name;
454 char *nodename;
455 uint32_t reg_attr[2];
456 uint64_t mmio_base;
457
458 mmio_base = platform_bus_get_mmio_addr(pbus, sbdev, 0);
459 nodename = g_strdup_printf("%s/tpm_tis@%" PRIx64, parent_node, mmio_base);
460 qemu_fdt_add_subnode(fdt, nodename);
461
462 qemu_fdt_setprop_string(fdt, nodename, "compatible", "tcg,tpm-tis-mmio");
463
464 reg_attr[0] = cpu_to_be32(mmio_base);
465 reg_attr[1] = cpu_to_be32(0x5000);
466 qemu_fdt_setprop(fdt, nodename, "reg", reg_attr, 2 * sizeof(uint32_t));
467
468 g_free(nodename);
469 return 0;
470}
471#endif
472
473static int no_fdt_node(SysBusDevice *sbdev, void *opaque)
474{
475 return 0;
476}
477
478
479static bool type_match(SysBusDevice *sbdev, const BindingEntry *entry)
480{
481 return !strcmp(object_get_typename(OBJECT(sbdev)), entry->typename);
482}
483
484#define TYPE_BINDING(type, add_fn) {(type), NULL, (add_fn), NULL}
485
486
487static const BindingEntry bindings[] = {
488#ifdef CONFIG_LINUX
489 TYPE_BINDING(TYPE_VFIO_CALXEDA_XGMAC, add_calxeda_midway_xgmac_fdt_node),
490 TYPE_BINDING(TYPE_VFIO_AMD_XGBE, add_amd_xgbe_fdt_node),
491 VFIO_PLATFORM_BINDING("amd,xgbe-seattle-v1a", add_amd_xgbe_fdt_node),
492#endif
493#ifdef CONFIG_TPM
494 TYPE_BINDING(TYPE_TPM_TIS_SYSBUS, add_tpm_tis_fdt_node),
495#endif
496 TYPE_BINDING(TYPE_RAMFB_DEVICE, no_fdt_node),
497 TYPE_BINDING("", NULL),
498};
499
500
501
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509
510
511
512static void add_fdt_node(SysBusDevice *sbdev, void *opaque)
513{
514 int i, ret;
515
516 for (i = 0; i < ARRAY_SIZE(bindings); i++) {
517 const BindingEntry *iter = &bindings[i];
518
519 if (type_match(sbdev, iter)) {
520 if (!iter->match_fn || iter->match_fn(sbdev, iter)) {
521 ret = iter->add_fn(sbdev, opaque);
522 assert(!ret);
523 return;
524 }
525 }
526 }
527 error_report("Device %s can not be dynamically instantiated",
528 qdev_fw_name(DEVICE(sbdev)));
529 exit(1);
530}
531
532void platform_bus_add_all_fdt_nodes(void *fdt, const char *intc, hwaddr addr,
533 hwaddr bus_size, int irq_start)
534{
535 const char platcomp[] = "qemu,platform\0simple-bus";
536 PlatformBusDevice *pbus;
537 DeviceState *dev;
538 gchar *node;
539
540 assert(fdt);
541
542 node = g_strdup_printf("/platform@%"PRIx64, addr);
543
544
545 qemu_fdt_add_subnode(fdt, node);
546 qemu_fdt_setprop(fdt, node, "compatible", platcomp, sizeof(platcomp));
547
548
549
550
551 qemu_fdt_setprop_cells(fdt, node, "#size-cells", 1);
552 qemu_fdt_setprop_cells(fdt, node, "#address-cells", 1);
553 qemu_fdt_setprop_cells(fdt, node, "ranges", 0, addr >> 32, addr, bus_size);
554
555 qemu_fdt_setprop_phandle(fdt, node, "interrupt-parent", intc);
556
557 dev = qdev_find_recursive(sysbus_get_default(), TYPE_PLATFORM_BUS_DEVICE);
558 pbus = PLATFORM_BUS_DEVICE(dev);
559
560 PlatformBusFDTData data = {
561 .fdt = fdt,
562 .irq_start = irq_start,
563 .pbus_node_name = node,
564 .pbus = pbus,
565 };
566
567
568 foreach_dynamic_sysbus_device(add_fdt_node, &data);
569
570 g_free(node);
571}
572