target_phys_addr_t is unwieldly, violates the C standard (_t suffixes are reserved) and its purpose doesn't match the name (most target_phys_addr_t addresses are not target specific). Replace it with a finger-friendly, standards conformant hwaddr. Outstanding patchsets can be fixed up with the command git rebase -i --exec 'find -name "*.[ch]" | xargs s/target_phys_addr_t/hwaddr/g' origin Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
535 lines
15 KiB
C
535 lines
15 KiB
C
/*
|
|
* QEMU S390 virtio target
|
|
*
|
|
* Copyright (c) 2009 Alexander Graf <agraf@suse.de>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "hw.h"
|
|
#include "block.h"
|
|
#include "sysemu.h"
|
|
#include "net.h"
|
|
#include "boards.h"
|
|
#include "monitor.h"
|
|
#include "loader.h"
|
|
#include "elf.h"
|
|
#include "hw/virtio.h"
|
|
#include "hw/virtio-serial.h"
|
|
#include "hw/virtio-net.h"
|
|
#include "hw/sysbus.h"
|
|
#include "kvm.h"
|
|
|
|
#include "hw/s390-virtio-bus.h"
|
|
|
|
/* #define DEBUG_S390 */
|
|
|
|
#ifdef DEBUG_S390
|
|
#define dprintf(fmt, ...) \
|
|
do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
|
|
#else
|
|
#define dprintf(fmt, ...) \
|
|
do { } while (0)
|
|
#endif
|
|
|
|
#define VIRTIO_EXT_CODE 0x2603
|
|
|
|
static const TypeInfo s390_virtio_bus_info = {
|
|
.name = TYPE_S390_VIRTIO_BUS,
|
|
.parent = TYPE_BUS,
|
|
.instance_size = sizeof(VirtIOS390Bus),
|
|
};
|
|
|
|
static const VirtIOBindings virtio_s390_bindings;
|
|
|
|
static ram_addr_t s390_virtio_device_num_vq(VirtIOS390Device *dev);
|
|
|
|
/* length of VirtIO device pages */
|
|
const hwaddr virtio_size = S390_DEVICE_PAGES * TARGET_PAGE_SIZE;
|
|
|
|
static void s390_virtio_bus_reset(void *opaque)
|
|
{
|
|
VirtIOS390Bus *bus = opaque;
|
|
bus->next_ring = bus->dev_page + TARGET_PAGE_SIZE;
|
|
}
|
|
|
|
void s390_virtio_reset_idx(VirtIOS390Device *dev)
|
|
{
|
|
int i;
|
|
hwaddr idx_addr;
|
|
uint8_t num_vq;
|
|
|
|
num_vq = s390_virtio_device_num_vq(dev);
|
|
for (i = 0; i < num_vq; i++) {
|
|
idx_addr = virtio_queue_get_avail_addr(dev->vdev, i) +
|
|
VIRTIO_VRING_AVAIL_IDX_OFFS;
|
|
stw_phys(idx_addr, 0);
|
|
idx_addr = virtio_queue_get_used_addr(dev->vdev, i) +
|
|
VIRTIO_VRING_USED_IDX_OFFS;
|
|
stw_phys(idx_addr, 0);
|
|
}
|
|
}
|
|
|
|
VirtIOS390Bus *s390_virtio_bus_init(ram_addr_t *ram_size)
|
|
{
|
|
VirtIOS390Bus *bus;
|
|
BusState *_bus;
|
|
DeviceState *dev;
|
|
|
|
/* Create bridge device */
|
|
dev = qdev_create(NULL, "s390-virtio-bridge");
|
|
qdev_init_nofail(dev);
|
|
|
|
/* Create bus on bridge device */
|
|
|
|
_bus = qbus_create(TYPE_S390_VIRTIO_BUS, dev, "s390-virtio");
|
|
bus = DO_UPCAST(VirtIOS390Bus, bus, _bus);
|
|
|
|
bus->dev_page = *ram_size;
|
|
bus->dev_offs = bus->dev_page;
|
|
bus->next_ring = bus->dev_page + TARGET_PAGE_SIZE;
|
|
|
|
/* Enable hotplugging */
|
|
_bus->allow_hotplug = 1;
|
|
|
|
/* Allocate RAM for VirtIO device pages (descriptors, queues, rings) */
|
|
*ram_size += S390_DEVICE_PAGES * TARGET_PAGE_SIZE;
|
|
|
|
qemu_register_reset(s390_virtio_bus_reset, bus);
|
|
return bus;
|
|
}
|
|
|
|
static void s390_virtio_irq(CPUS390XState *env, int config_change, uint64_t token)
|
|
{
|
|
if (kvm_enabled()) {
|
|
kvm_s390_virtio_irq(env, config_change, token);
|
|
} else {
|
|
cpu_inject_ext(env, VIRTIO_EXT_CODE, config_change, token);
|
|
}
|
|
}
|
|
|
|
static int s390_virtio_device_init(VirtIOS390Device *dev, VirtIODevice *vdev)
|
|
{
|
|
VirtIOS390Bus *bus;
|
|
int dev_len;
|
|
|
|
bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
|
|
dev->vdev = vdev;
|
|
dev->dev_offs = bus->dev_offs;
|
|
dev->feat_len = sizeof(uint32_t); /* always keep 32 bits features */
|
|
|
|
dev_len = VIRTIO_DEV_OFFS_CONFIG;
|
|
dev_len += s390_virtio_device_num_vq(dev) * VIRTIO_VQCONFIG_LEN;
|
|
dev_len += dev->feat_len * 2;
|
|
dev_len += vdev->config_len;
|
|
|
|
bus->dev_offs += dev_len;
|
|
|
|
virtio_bind_device(vdev, &virtio_s390_bindings, dev);
|
|
dev->host_features = vdev->get_features(vdev, dev->host_features);
|
|
s390_virtio_device_sync(dev);
|
|
s390_virtio_reset_idx(dev);
|
|
if (dev->qdev.hotplugged) {
|
|
S390CPU *cpu = s390_cpu_addr2state(0);
|
|
CPUS390XState *env = &cpu->env;
|
|
s390_virtio_irq(env, VIRTIO_PARAM_DEV_ADD, dev->dev_offs);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int s390_virtio_net_init(VirtIOS390Device *dev)
|
|
{
|
|
VirtIODevice *vdev;
|
|
|
|
vdev = virtio_net_init((DeviceState *)dev, &dev->nic, &dev->net);
|
|
if (!vdev) {
|
|
return -1;
|
|
}
|
|
|
|
return s390_virtio_device_init(dev, vdev);
|
|
}
|
|
|
|
static int s390_virtio_blk_init(VirtIOS390Device *dev)
|
|
{
|
|
VirtIODevice *vdev;
|
|
|
|
vdev = virtio_blk_init((DeviceState *)dev, &dev->blk);
|
|
if (!vdev) {
|
|
return -1;
|
|
}
|
|
|
|
return s390_virtio_device_init(dev, vdev);
|
|
}
|
|
|
|
static int s390_virtio_serial_init(VirtIOS390Device *dev)
|
|
{
|
|
VirtIOS390Bus *bus;
|
|
VirtIODevice *vdev;
|
|
int r;
|
|
|
|
bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
|
|
|
|
vdev = virtio_serial_init((DeviceState *)dev, &dev->serial);
|
|
if (!vdev) {
|
|
return -1;
|
|
}
|
|
|
|
r = s390_virtio_device_init(dev, vdev);
|
|
if (!r) {
|
|
bus->console = dev;
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
static int s390_virtio_scsi_init(VirtIOS390Device *dev)
|
|
{
|
|
VirtIODevice *vdev;
|
|
|
|
vdev = virtio_scsi_init((DeviceState *)dev, &dev->scsi);
|
|
if (!vdev) {
|
|
return -1;
|
|
}
|
|
|
|
return s390_virtio_device_init(dev, vdev);
|
|
}
|
|
|
|
static uint64_t s390_virtio_device_vq_token(VirtIOS390Device *dev, int vq)
|
|
{
|
|
ram_addr_t token_off;
|
|
|
|
token_off = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
|
|
(vq * VIRTIO_VQCONFIG_LEN) +
|
|
VIRTIO_VQCONFIG_OFFS_TOKEN;
|
|
|
|
return ldq_be_phys(token_off);
|
|
}
|
|
|
|
static ram_addr_t s390_virtio_device_num_vq(VirtIOS390Device *dev)
|
|
{
|
|
VirtIODevice *vdev = dev->vdev;
|
|
int num_vq;
|
|
|
|
for (num_vq = 0; num_vq < VIRTIO_PCI_QUEUE_MAX; num_vq++) {
|
|
if (!virtio_queue_get_num(vdev, num_vq)) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
return num_vq;
|
|
}
|
|
|
|
static ram_addr_t s390_virtio_next_ring(VirtIOS390Bus *bus)
|
|
{
|
|
ram_addr_t r = bus->next_ring;
|
|
|
|
bus->next_ring += VIRTIO_RING_LEN;
|
|
return r;
|
|
}
|
|
|
|
void s390_virtio_device_sync(VirtIOS390Device *dev)
|
|
{
|
|
VirtIOS390Bus *bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
|
|
ram_addr_t cur_offs;
|
|
uint8_t num_vq;
|
|
int i;
|
|
|
|
virtio_reset(dev->vdev);
|
|
|
|
/* Sync dev space */
|
|
stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_TYPE, dev->vdev->device_id);
|
|
|
|
stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ, s390_virtio_device_num_vq(dev));
|
|
stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_FEATURE_LEN, dev->feat_len);
|
|
|
|
stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG_LEN, dev->vdev->config_len);
|
|
|
|
num_vq = s390_virtio_device_num_vq(dev);
|
|
stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ, num_vq);
|
|
|
|
/* Sync virtqueues */
|
|
for (i = 0; i < num_vq; i++) {
|
|
ram_addr_t vq = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
|
|
(i * VIRTIO_VQCONFIG_LEN);
|
|
ram_addr_t vring;
|
|
|
|
vring = s390_virtio_next_ring(bus);
|
|
virtio_queue_set_addr(dev->vdev, i, vring);
|
|
virtio_queue_set_vector(dev->vdev, i, i);
|
|
stq_be_phys(vq + VIRTIO_VQCONFIG_OFFS_ADDRESS, vring);
|
|
stw_be_phys(vq + VIRTIO_VQCONFIG_OFFS_NUM, virtio_queue_get_num(dev->vdev, i));
|
|
}
|
|
|
|
cur_offs = dev->dev_offs;
|
|
cur_offs += VIRTIO_DEV_OFFS_CONFIG;
|
|
cur_offs += num_vq * VIRTIO_VQCONFIG_LEN;
|
|
|
|
/* Sync feature bitmap */
|
|
stl_le_phys(cur_offs, dev->host_features);
|
|
|
|
dev->feat_offs = cur_offs + dev->feat_len;
|
|
cur_offs += dev->feat_len * 2;
|
|
|
|
/* Sync config space */
|
|
if (dev->vdev->get_config) {
|
|
dev->vdev->get_config(dev->vdev, dev->vdev->config);
|
|
}
|
|
|
|
cpu_physical_memory_write(cur_offs,
|
|
dev->vdev->config, dev->vdev->config_len);
|
|
cur_offs += dev->vdev->config_len;
|
|
}
|
|
|
|
void s390_virtio_device_update_status(VirtIOS390Device *dev)
|
|
{
|
|
VirtIODevice *vdev = dev->vdev;
|
|
uint32_t features;
|
|
|
|
virtio_set_status(vdev, ldub_phys(dev->dev_offs + VIRTIO_DEV_OFFS_STATUS));
|
|
|
|
/* Update guest supported feature bitmap */
|
|
|
|
features = bswap32(ldl_be_phys(dev->feat_offs));
|
|
virtio_set_features(vdev, features);
|
|
}
|
|
|
|
VirtIOS390Device *s390_virtio_bus_console(VirtIOS390Bus *bus)
|
|
{
|
|
return bus->console;
|
|
}
|
|
|
|
/* Find a device by vring address */
|
|
VirtIOS390Device *s390_virtio_bus_find_vring(VirtIOS390Bus *bus,
|
|
ram_addr_t mem,
|
|
int *vq_num)
|
|
{
|
|
BusChild *kid;
|
|
int i;
|
|
|
|
QTAILQ_FOREACH(kid, &bus->bus.children, sibling) {
|
|
VirtIOS390Device *dev = (VirtIOS390Device *)kid->child;
|
|
|
|
for(i = 0; i < VIRTIO_PCI_QUEUE_MAX; i++) {
|
|
if (!virtio_queue_get_addr(dev->vdev, i))
|
|
break;
|
|
if (virtio_queue_get_addr(dev->vdev, i) == mem) {
|
|
if (vq_num) {
|
|
*vq_num = i;
|
|
}
|
|
return dev;
|
|
}
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* Find a device by device descriptor location */
|
|
VirtIOS390Device *s390_virtio_bus_find_mem(VirtIOS390Bus *bus, ram_addr_t mem)
|
|
{
|
|
BusChild *kid;
|
|
|
|
QTAILQ_FOREACH(kid, &bus->bus.children, sibling) {
|
|
VirtIOS390Device *dev = (VirtIOS390Device *)kid->child;
|
|
if (dev->dev_offs == mem) {
|
|
return dev;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void virtio_s390_notify(void *opaque, uint16_t vector)
|
|
{
|
|
VirtIOS390Device *dev = (VirtIOS390Device*)opaque;
|
|
uint64_t token = s390_virtio_device_vq_token(dev, vector);
|
|
S390CPU *cpu = s390_cpu_addr2state(0);
|
|
CPUS390XState *env = &cpu->env;
|
|
|
|
s390_virtio_irq(env, 0, token);
|
|
}
|
|
|
|
static unsigned virtio_s390_get_features(void *opaque)
|
|
{
|
|
VirtIOS390Device *dev = (VirtIOS390Device*)opaque;
|
|
return dev->host_features;
|
|
}
|
|
|
|
/**************** S390 Virtio Bus Device Descriptions *******************/
|
|
|
|
static const VirtIOBindings virtio_s390_bindings = {
|
|
.notify = virtio_s390_notify,
|
|
.get_features = virtio_s390_get_features,
|
|
};
|
|
|
|
static Property s390_virtio_net_properties[] = {
|
|
DEFINE_NIC_PROPERTIES(VirtIOS390Device, nic),
|
|
DEFINE_PROP_UINT32("x-txtimer", VirtIOS390Device,
|
|
net.txtimer, TX_TIMER_INTERVAL),
|
|
DEFINE_PROP_INT32("x-txburst", VirtIOS390Device,
|
|
net.txburst, TX_BURST),
|
|
DEFINE_PROP_STRING("tx", VirtIOS390Device, net.tx),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
};
|
|
|
|
static void s390_virtio_net_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
|
|
|
|
k->init = s390_virtio_net_init;
|
|
dc->props = s390_virtio_net_properties;
|
|
}
|
|
|
|
static TypeInfo s390_virtio_net = {
|
|
.name = "virtio-net-s390",
|
|
.parent = TYPE_VIRTIO_S390_DEVICE,
|
|
.instance_size = sizeof(VirtIOS390Device),
|
|
.class_init = s390_virtio_net_class_init,
|
|
};
|
|
|
|
static Property s390_virtio_blk_properties[] = {
|
|
DEFINE_BLOCK_PROPERTIES(VirtIOS390Device, blk.conf),
|
|
DEFINE_BLOCK_CHS_PROPERTIES(VirtIOS390Device, blk.conf),
|
|
DEFINE_PROP_STRING("serial", VirtIOS390Device, blk.serial),
|
|
#ifdef __linux__
|
|
DEFINE_PROP_BIT("scsi", VirtIOS390Device, blk.scsi, 0, true),
|
|
#endif
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
};
|
|
|
|
static void s390_virtio_blk_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
|
|
|
|
k->init = s390_virtio_blk_init;
|
|
dc->props = s390_virtio_blk_properties;
|
|
}
|
|
|
|
static TypeInfo s390_virtio_blk = {
|
|
.name = "virtio-blk-s390",
|
|
.parent = TYPE_VIRTIO_S390_DEVICE,
|
|
.instance_size = sizeof(VirtIOS390Device),
|
|
.class_init = s390_virtio_blk_class_init,
|
|
};
|
|
|
|
static Property s390_virtio_serial_properties[] = {
|
|
DEFINE_PROP_UINT32("max_ports", VirtIOS390Device,
|
|
serial.max_virtserial_ports, 31),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
};
|
|
|
|
static void s390_virtio_serial_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
|
|
|
|
k->init = s390_virtio_serial_init;
|
|
dc->props = s390_virtio_serial_properties;
|
|
}
|
|
|
|
static TypeInfo s390_virtio_serial = {
|
|
.name = "virtio-serial-s390",
|
|
.parent = TYPE_VIRTIO_S390_DEVICE,
|
|
.instance_size = sizeof(VirtIOS390Device),
|
|
.class_init = s390_virtio_serial_class_init,
|
|
};
|
|
|
|
static int s390_virtio_busdev_init(DeviceState *dev)
|
|
{
|
|
VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
|
|
VirtIOS390DeviceClass *_info = VIRTIO_S390_DEVICE_GET_CLASS(dev);
|
|
|
|
return _info->init(_dev);
|
|
}
|
|
|
|
static void virtio_s390_device_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
|
|
dc->init = s390_virtio_busdev_init;
|
|
dc->bus_type = TYPE_S390_VIRTIO_BUS;
|
|
dc->unplug = qdev_simple_unplug_cb;
|
|
}
|
|
|
|
static TypeInfo virtio_s390_device_info = {
|
|
.name = TYPE_VIRTIO_S390_DEVICE,
|
|
.parent = TYPE_DEVICE,
|
|
.instance_size = sizeof(VirtIOS390Device),
|
|
.class_init = virtio_s390_device_class_init,
|
|
.class_size = sizeof(VirtIOS390DeviceClass),
|
|
.abstract = true,
|
|
};
|
|
|
|
static Property s390_virtio_scsi_properties[] = {
|
|
DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOS390Device, host_features, scsi),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
};
|
|
|
|
static void s390_virtio_scsi_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
|
|
|
|
k->init = s390_virtio_scsi_init;
|
|
dc->props = s390_virtio_scsi_properties;
|
|
}
|
|
|
|
static TypeInfo s390_virtio_scsi = {
|
|
.name = "virtio-scsi-s390",
|
|
.parent = TYPE_VIRTIO_S390_DEVICE,
|
|
.instance_size = sizeof(VirtIOS390Device),
|
|
.class_init = s390_virtio_scsi_class_init,
|
|
};
|
|
|
|
/***************** S390 Virtio Bus Bridge Device *******************/
|
|
/* Only required to have the virtio bus as child in the system bus */
|
|
|
|
static int s390_virtio_bridge_init(SysBusDevice *dev)
|
|
{
|
|
/* nothing */
|
|
return 0;
|
|
}
|
|
|
|
static void s390_virtio_bridge_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
|
|
|
|
k->init = s390_virtio_bridge_init;
|
|
dc->no_user = 1;
|
|
}
|
|
|
|
static TypeInfo s390_virtio_bridge_info = {
|
|
.name = "s390-virtio-bridge",
|
|
.parent = TYPE_SYS_BUS_DEVICE,
|
|
.instance_size = sizeof(SysBusDevice),
|
|
.class_init = s390_virtio_bridge_class_init,
|
|
};
|
|
|
|
static void s390_virtio_register_types(void)
|
|
{
|
|
type_register_static(&s390_virtio_bus_info);
|
|
type_register_static(&virtio_s390_device_info);
|
|
type_register_static(&s390_virtio_serial);
|
|
type_register_static(&s390_virtio_blk);
|
|
type_register_static(&s390_virtio_net);
|
|
type_register_static(&s390_virtio_scsi);
|
|
type_register_static(&s390_virtio_bridge_info);
|
|
}
|
|
|
|
type_init(s390_virtio_register_types)
|