2 * QEMU S390 virtio target
4 * Copyright (c) 2009 Alexander Graf <agraf@suse.de>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
28 #include "hw/virtio.h"
29 #include "hw/virtio-rng.h"
30 #include "hw/virtio-serial.h"
31 #include "hw/virtio-net.h"
32 #include "hw/sysbus.h"
35 #include "hw/s390-virtio-bus.h"
37 /* #define DEBUG_S390 */
40 #define dprintf(fmt, ...) \
41 do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
43 #define dprintf(fmt, ...) \
47 #define VIRTIO_EXT_CODE 0x2603
49 static const TypeInfo s390_virtio_bus_info
= {
50 .name
= TYPE_S390_VIRTIO_BUS
,
52 .instance_size
= sizeof(VirtIOS390Bus
),
55 static const VirtIOBindings virtio_s390_bindings
;
57 static ram_addr_t
s390_virtio_device_num_vq(VirtIOS390Device
*dev
);
59 /* length of VirtIO device pages */
60 const hwaddr virtio_size
= S390_DEVICE_PAGES
* TARGET_PAGE_SIZE
;
62 static void s390_virtio_bus_reset(void *opaque
)
64 VirtIOS390Bus
*bus
= opaque
;
65 bus
->next_ring
= bus
->dev_page
+ TARGET_PAGE_SIZE
;
68 void s390_virtio_reset_idx(VirtIOS390Device
*dev
)
74 num_vq
= s390_virtio_device_num_vq(dev
);
75 for (i
= 0; i
< num_vq
; i
++) {
76 idx_addr
= virtio_queue_get_avail_addr(dev
->vdev
, i
) +
77 VIRTIO_VRING_AVAIL_IDX_OFFS
;
78 stw_phys(idx_addr
, 0);
79 idx_addr
= virtio_queue_get_used_addr(dev
->vdev
, i
) +
80 VIRTIO_VRING_USED_IDX_OFFS
;
81 stw_phys(idx_addr
, 0);
85 VirtIOS390Bus
*s390_virtio_bus_init(ram_addr_t
*ram_size
)
91 /* Create bridge device */
92 dev
= qdev_create(NULL
, "s390-virtio-bridge");
93 qdev_init_nofail(dev
);
95 /* Create bus on bridge device */
97 _bus
= qbus_create(TYPE_S390_VIRTIO_BUS
, dev
, "s390-virtio");
98 bus
= DO_UPCAST(VirtIOS390Bus
, bus
, _bus
);
100 bus
->dev_page
= *ram_size
;
101 bus
->dev_offs
= bus
->dev_page
;
102 bus
->next_ring
= bus
->dev_page
+ TARGET_PAGE_SIZE
;
104 /* Enable hotplugging */
105 _bus
->allow_hotplug
= 1;
107 /* Allocate RAM for VirtIO device pages (descriptors, queues, rings) */
108 *ram_size
+= S390_DEVICE_PAGES
* TARGET_PAGE_SIZE
;
110 qemu_register_reset(s390_virtio_bus_reset
, bus
);
114 static void s390_virtio_irq(CPUS390XState
*env
, int config_change
, uint64_t token
)
117 kvm_s390_virtio_irq(env
, config_change
, token
);
119 cpu_inject_ext(env
, VIRTIO_EXT_CODE
, config_change
, token
);
123 static int s390_virtio_device_init(VirtIOS390Device
*dev
, VirtIODevice
*vdev
)
128 bus
= DO_UPCAST(VirtIOS390Bus
, bus
, dev
->qdev
.parent_bus
);
130 dev
->dev_offs
= bus
->dev_offs
;
131 dev
->feat_len
= sizeof(uint32_t); /* always keep 32 bits features */
133 dev_len
= VIRTIO_DEV_OFFS_CONFIG
;
134 dev_len
+= s390_virtio_device_num_vq(dev
) * VIRTIO_VQCONFIG_LEN
;
135 dev_len
+= dev
->feat_len
* 2;
136 dev_len
+= vdev
->config_len
;
138 bus
->dev_offs
+= dev_len
;
140 virtio_bind_device(vdev
, &virtio_s390_bindings
, dev
);
141 dev
->host_features
= vdev
->get_features(vdev
, dev
->host_features
);
142 s390_virtio_device_sync(dev
);
143 s390_virtio_reset_idx(dev
);
144 if (dev
->qdev
.hotplugged
) {
145 S390CPU
*cpu
= s390_cpu_addr2state(0);
146 CPUS390XState
*env
= &cpu
->env
;
147 s390_virtio_irq(env
, VIRTIO_PARAM_DEV_ADD
, dev
->dev_offs
);
153 static int s390_virtio_net_init(VirtIOS390Device
*dev
)
157 vdev
= virtio_net_init((DeviceState
*)dev
, &dev
->nic
, &dev
->net
);
162 return s390_virtio_device_init(dev
, vdev
);
165 static int s390_virtio_blk_init(VirtIOS390Device
*dev
)
169 vdev
= virtio_blk_init((DeviceState
*)dev
, &dev
->blk
);
174 return s390_virtio_device_init(dev
, vdev
);
177 static int s390_virtio_serial_init(VirtIOS390Device
*dev
)
183 bus
= DO_UPCAST(VirtIOS390Bus
, bus
, dev
->qdev
.parent_bus
);
185 vdev
= virtio_serial_init((DeviceState
*)dev
, &dev
->serial
);
190 r
= s390_virtio_device_init(dev
, vdev
);
198 static int s390_virtio_scsi_init(VirtIOS390Device
*dev
)
202 vdev
= virtio_scsi_init((DeviceState
*)dev
, &dev
->scsi
);
207 return s390_virtio_device_init(dev
, vdev
);
210 static int s390_virtio_rng_init(VirtIOS390Device
*dev
)
214 vdev
= virtio_rng_init((DeviceState
*)dev
, &dev
->rng
);
219 return s390_virtio_device_init(dev
, vdev
);
222 static uint64_t s390_virtio_device_vq_token(VirtIOS390Device
*dev
, int vq
)
224 ram_addr_t token_off
;
226 token_off
= (dev
->dev_offs
+ VIRTIO_DEV_OFFS_CONFIG
) +
227 (vq
* VIRTIO_VQCONFIG_LEN
) +
228 VIRTIO_VQCONFIG_OFFS_TOKEN
;
230 return ldq_be_phys(token_off
);
233 static ram_addr_t
s390_virtio_device_num_vq(VirtIOS390Device
*dev
)
235 VirtIODevice
*vdev
= dev
->vdev
;
238 for (num_vq
= 0; num_vq
< VIRTIO_PCI_QUEUE_MAX
; num_vq
++) {
239 if (!virtio_queue_get_num(vdev
, num_vq
)) {
247 static ram_addr_t
s390_virtio_next_ring(VirtIOS390Bus
*bus
)
249 ram_addr_t r
= bus
->next_ring
;
251 bus
->next_ring
+= VIRTIO_RING_LEN
;
255 void s390_virtio_device_sync(VirtIOS390Device
*dev
)
257 VirtIOS390Bus
*bus
= DO_UPCAST(VirtIOS390Bus
, bus
, dev
->qdev
.parent_bus
);
262 virtio_reset(dev
->vdev
);
265 stb_phys(dev
->dev_offs
+ VIRTIO_DEV_OFFS_TYPE
, dev
->vdev
->device_id
);
267 stb_phys(dev
->dev_offs
+ VIRTIO_DEV_OFFS_NUM_VQ
, s390_virtio_device_num_vq(dev
));
268 stb_phys(dev
->dev_offs
+ VIRTIO_DEV_OFFS_FEATURE_LEN
, dev
->feat_len
);
270 stb_phys(dev
->dev_offs
+ VIRTIO_DEV_OFFS_CONFIG_LEN
, dev
->vdev
->config_len
);
272 num_vq
= s390_virtio_device_num_vq(dev
);
273 stb_phys(dev
->dev_offs
+ VIRTIO_DEV_OFFS_NUM_VQ
, num_vq
);
275 /* Sync virtqueues */
276 for (i
= 0; i
< num_vq
; i
++) {
277 ram_addr_t vq
= (dev
->dev_offs
+ VIRTIO_DEV_OFFS_CONFIG
) +
278 (i
* VIRTIO_VQCONFIG_LEN
);
281 vring
= s390_virtio_next_ring(bus
);
282 virtio_queue_set_addr(dev
->vdev
, i
, vring
);
283 virtio_queue_set_vector(dev
->vdev
, i
, i
);
284 stq_be_phys(vq
+ VIRTIO_VQCONFIG_OFFS_ADDRESS
, vring
);
285 stw_be_phys(vq
+ VIRTIO_VQCONFIG_OFFS_NUM
, virtio_queue_get_num(dev
->vdev
, i
));
288 cur_offs
= dev
->dev_offs
;
289 cur_offs
+= VIRTIO_DEV_OFFS_CONFIG
;
290 cur_offs
+= num_vq
* VIRTIO_VQCONFIG_LEN
;
292 /* Sync feature bitmap */
293 stl_le_phys(cur_offs
, dev
->host_features
);
295 dev
->feat_offs
= cur_offs
+ dev
->feat_len
;
296 cur_offs
+= dev
->feat_len
* 2;
298 /* Sync config space */
299 if (dev
->vdev
->get_config
) {
300 dev
->vdev
->get_config(dev
->vdev
, dev
->vdev
->config
);
303 cpu_physical_memory_write(cur_offs
,
304 dev
->vdev
->config
, dev
->vdev
->config_len
);
305 cur_offs
+= dev
->vdev
->config_len
;
308 void s390_virtio_device_update_status(VirtIOS390Device
*dev
)
310 VirtIODevice
*vdev
= dev
->vdev
;
313 virtio_set_status(vdev
, ldub_phys(dev
->dev_offs
+ VIRTIO_DEV_OFFS_STATUS
));
315 /* Update guest supported feature bitmap */
317 features
= bswap32(ldl_be_phys(dev
->feat_offs
));
318 virtio_set_features(vdev
, features
);
321 VirtIOS390Device
*s390_virtio_bus_console(VirtIOS390Bus
*bus
)
326 /* Find a device by vring address */
327 VirtIOS390Device
*s390_virtio_bus_find_vring(VirtIOS390Bus
*bus
,
334 QTAILQ_FOREACH(kid
, &bus
->bus
.children
, sibling
) {
335 VirtIOS390Device
*dev
= (VirtIOS390Device
*)kid
->child
;
337 for(i
= 0; i
< VIRTIO_PCI_QUEUE_MAX
; i
++) {
338 if (!virtio_queue_get_addr(dev
->vdev
, i
))
340 if (virtio_queue_get_addr(dev
->vdev
, i
) == mem
) {
352 /* Find a device by device descriptor location */
353 VirtIOS390Device
*s390_virtio_bus_find_mem(VirtIOS390Bus
*bus
, ram_addr_t mem
)
357 QTAILQ_FOREACH(kid
, &bus
->bus
.children
, sibling
) {
358 VirtIOS390Device
*dev
= (VirtIOS390Device
*)kid
->child
;
359 if (dev
->dev_offs
== mem
) {
367 static void virtio_s390_notify(void *opaque
, uint16_t vector
)
369 VirtIOS390Device
*dev
= (VirtIOS390Device
*)opaque
;
370 uint64_t token
= s390_virtio_device_vq_token(dev
, vector
);
371 S390CPU
*cpu
= s390_cpu_addr2state(0);
372 CPUS390XState
*env
= &cpu
->env
;
374 s390_virtio_irq(env
, 0, token
);
377 static unsigned virtio_s390_get_features(void *opaque
)
379 VirtIOS390Device
*dev
= (VirtIOS390Device
*)opaque
;
380 return dev
->host_features
;
383 /**************** S390 Virtio Bus Device Descriptions *******************/
385 static const VirtIOBindings virtio_s390_bindings
= {
386 .notify
= virtio_s390_notify
,
387 .get_features
= virtio_s390_get_features
,
390 static Property s390_virtio_net_properties
[] = {
391 DEFINE_NIC_PROPERTIES(VirtIOS390Device
, nic
),
392 DEFINE_PROP_UINT32("x-txtimer", VirtIOS390Device
,
393 net
.txtimer
, TX_TIMER_INTERVAL
),
394 DEFINE_PROP_INT32("x-txburst", VirtIOS390Device
,
395 net
.txburst
, TX_BURST
),
396 DEFINE_PROP_STRING("tx", VirtIOS390Device
, net
.tx
),
397 DEFINE_PROP_END_OF_LIST(),
400 static void s390_virtio_net_class_init(ObjectClass
*klass
, void *data
)
402 DeviceClass
*dc
= DEVICE_CLASS(klass
);
403 VirtIOS390DeviceClass
*k
= VIRTIO_S390_DEVICE_CLASS(klass
);
405 k
->init
= s390_virtio_net_init
;
406 dc
->props
= s390_virtio_net_properties
;
409 static TypeInfo s390_virtio_net
= {
410 .name
= "virtio-net-s390",
411 .parent
= TYPE_VIRTIO_S390_DEVICE
,
412 .instance_size
= sizeof(VirtIOS390Device
),
413 .class_init
= s390_virtio_net_class_init
,
416 static Property s390_virtio_blk_properties
[] = {
417 DEFINE_BLOCK_PROPERTIES(VirtIOS390Device
, blk
.conf
),
418 DEFINE_BLOCK_CHS_PROPERTIES(VirtIOS390Device
, blk
.conf
),
419 DEFINE_PROP_STRING("serial", VirtIOS390Device
, blk
.serial
),
421 DEFINE_PROP_BIT("scsi", VirtIOS390Device
, blk
.scsi
, 0, true),
423 DEFINE_PROP_END_OF_LIST(),
426 static void s390_virtio_blk_class_init(ObjectClass
*klass
, void *data
)
428 DeviceClass
*dc
= DEVICE_CLASS(klass
);
429 VirtIOS390DeviceClass
*k
= VIRTIO_S390_DEVICE_CLASS(klass
);
431 k
->init
= s390_virtio_blk_init
;
432 dc
->props
= s390_virtio_blk_properties
;
435 static TypeInfo s390_virtio_blk
= {
436 .name
= "virtio-blk-s390",
437 .parent
= TYPE_VIRTIO_S390_DEVICE
,
438 .instance_size
= sizeof(VirtIOS390Device
),
439 .class_init
= s390_virtio_blk_class_init
,
442 static Property s390_virtio_serial_properties
[] = {
443 DEFINE_PROP_UINT32("max_ports", VirtIOS390Device
,
444 serial
.max_virtserial_ports
, 31),
445 DEFINE_PROP_END_OF_LIST(),
448 static void s390_virtio_serial_class_init(ObjectClass
*klass
, void *data
)
450 DeviceClass
*dc
= DEVICE_CLASS(klass
);
451 VirtIOS390DeviceClass
*k
= VIRTIO_S390_DEVICE_CLASS(klass
);
453 k
->init
= s390_virtio_serial_init
;
454 dc
->props
= s390_virtio_serial_properties
;
457 static TypeInfo s390_virtio_serial
= {
458 .name
= "virtio-serial-s390",
459 .parent
= TYPE_VIRTIO_S390_DEVICE
,
460 .instance_size
= sizeof(VirtIOS390Device
),
461 .class_init
= s390_virtio_serial_class_init
,
464 static void s390_virtio_rng_initfn(Object
*obj
)
466 VirtIOS390Device
*dev
= VIRTIO_S390_DEVICE(obj
);
468 object_property_add_link(obj
, "rng", TYPE_RNG_BACKEND
,
469 (Object
**)&dev
->rng
.rng
, NULL
);
472 static void s390_virtio_rng_class_init(ObjectClass
*klass
, void *data
)
474 VirtIOS390DeviceClass
*k
= VIRTIO_S390_DEVICE_CLASS(klass
);
476 k
->init
= s390_virtio_rng_init
;
479 static TypeInfo s390_virtio_rng
= {
480 .name
= "virtio-rng-s390",
481 .parent
= TYPE_VIRTIO_S390_DEVICE
,
482 .instance_size
= sizeof(VirtIOS390Device
),
483 .instance_init
= s390_virtio_rng_initfn
,
484 .class_init
= s390_virtio_rng_class_init
,
487 static int s390_virtio_busdev_init(DeviceState
*dev
)
489 VirtIOS390Device
*_dev
= (VirtIOS390Device
*)dev
;
490 VirtIOS390DeviceClass
*_info
= VIRTIO_S390_DEVICE_GET_CLASS(dev
);
492 return _info
->init(_dev
);
495 static void virtio_s390_device_class_init(ObjectClass
*klass
, void *data
)
497 DeviceClass
*dc
= DEVICE_CLASS(klass
);
499 dc
->init
= s390_virtio_busdev_init
;
500 dc
->bus_type
= TYPE_S390_VIRTIO_BUS
;
501 dc
->unplug
= qdev_simple_unplug_cb
;
504 static TypeInfo virtio_s390_device_info
= {
505 .name
= TYPE_VIRTIO_S390_DEVICE
,
506 .parent
= TYPE_DEVICE
,
507 .instance_size
= sizeof(VirtIOS390Device
),
508 .class_init
= virtio_s390_device_class_init
,
509 .class_size
= sizeof(VirtIOS390DeviceClass
),
513 static Property s390_virtio_scsi_properties
[] = {
514 DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOS390Device
, host_features
, scsi
),
515 DEFINE_PROP_END_OF_LIST(),
518 static void s390_virtio_scsi_class_init(ObjectClass
*klass
, void *data
)
520 DeviceClass
*dc
= DEVICE_CLASS(klass
);
521 VirtIOS390DeviceClass
*k
= VIRTIO_S390_DEVICE_CLASS(klass
);
523 k
->init
= s390_virtio_scsi_init
;
524 dc
->props
= s390_virtio_scsi_properties
;
527 static TypeInfo s390_virtio_scsi
= {
528 .name
= "virtio-scsi-s390",
529 .parent
= TYPE_VIRTIO_S390_DEVICE
,
530 .instance_size
= sizeof(VirtIOS390Device
),
531 .class_init
= s390_virtio_scsi_class_init
,
534 /***************** S390 Virtio Bus Bridge Device *******************/
535 /* Only required to have the virtio bus as child in the system bus */
537 static int s390_virtio_bridge_init(SysBusDevice
*dev
)
543 static void s390_virtio_bridge_class_init(ObjectClass
*klass
, void *data
)
545 DeviceClass
*dc
= DEVICE_CLASS(klass
);
546 SysBusDeviceClass
*k
= SYS_BUS_DEVICE_CLASS(klass
);
548 k
->init
= s390_virtio_bridge_init
;
552 static TypeInfo s390_virtio_bridge_info
= {
553 .name
= "s390-virtio-bridge",
554 .parent
= TYPE_SYS_BUS_DEVICE
,
555 .instance_size
= sizeof(SysBusDevice
),
556 .class_init
= s390_virtio_bridge_class_init
,
559 static void s390_virtio_register_types(void)
561 type_register_static(&s390_virtio_bus_info
);
562 type_register_static(&virtio_s390_device_info
);
563 type_register_static(&s390_virtio_serial
);
564 type_register_static(&s390_virtio_blk
);
565 type_register_static(&s390_virtio_net
);
566 type_register_static(&s390_virtio_scsi
);
567 type_register_static(&s390_virtio_rng
);
568 type_register_static(&s390_virtio_bridge_info
);
571 type_init(s390_virtio_register_types
)