This is far less interesting than it sounds. We simply add an Object to each BusState and then register the types appropriately. Most of the interesting refactoring will follow in the next patches. Since we're changing fundamental type names (BusInfo -> BusClass), it all needs to convert at once. Fortunately, not a lot of code is affected. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> [AF: Made all new bus TypeInfos static const.] [AF: Made qbus_free() call object_delete(), required {qom,glib}_allocated] Signed-off-by: Andreas Färber <afaerber@suse.de>
535 lines
15 KiB
C
535 lines
15 KiB
C
/*
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* QEMU S390 virtio target
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*
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* Copyright (c) 2009 Alexander Graf <agraf@suse.de>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "hw.h"
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#include "block.h"
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#include "sysemu.h"
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#include "net.h"
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#include "boards.h"
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#include "monitor.h"
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#include "loader.h"
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#include "elf.h"
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#include "hw/virtio.h"
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#include "hw/virtio-serial.h"
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#include "hw/virtio-net.h"
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#include "hw/sysbus.h"
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#include "kvm.h"
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#include "hw/s390-virtio-bus.h"
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/* #define DEBUG_S390 */
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#ifdef DEBUG_S390
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#define dprintf(fmt, ...) \
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do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
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#else
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#define dprintf(fmt, ...) \
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do { } while (0)
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#endif
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#define VIRTIO_EXT_CODE 0x2603
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static const TypeInfo s390_virtio_bus_info = {
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.name = TYPE_S390_VIRTIO_BUS,
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.parent = TYPE_BUS,
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.instance_size = sizeof(VirtIOS390Bus),
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};
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static const VirtIOBindings virtio_s390_bindings;
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static ram_addr_t s390_virtio_device_num_vq(VirtIOS390Device *dev);
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/* length of VirtIO device pages */
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const target_phys_addr_t virtio_size = S390_DEVICE_PAGES * TARGET_PAGE_SIZE;
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static void s390_virtio_bus_reset(void *opaque)
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{
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VirtIOS390Bus *bus = opaque;
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bus->next_ring = bus->dev_page + TARGET_PAGE_SIZE;
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}
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void s390_virtio_reset_idx(VirtIOS390Device *dev)
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{
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int i;
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target_phys_addr_t idx_addr;
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uint8_t num_vq;
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num_vq = s390_virtio_device_num_vq(dev);
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for (i = 0; i < num_vq; i++) {
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idx_addr = virtio_queue_get_avail_addr(dev->vdev, i) +
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VIRTIO_VRING_AVAIL_IDX_OFFS;
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stw_phys(idx_addr, 0);
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idx_addr = virtio_queue_get_used_addr(dev->vdev, i) +
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VIRTIO_VRING_USED_IDX_OFFS;
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stw_phys(idx_addr, 0);
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}
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}
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VirtIOS390Bus *s390_virtio_bus_init(ram_addr_t *ram_size)
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{
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VirtIOS390Bus *bus;
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BusState *_bus;
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DeviceState *dev;
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/* Create bridge device */
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dev = qdev_create(NULL, "s390-virtio-bridge");
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qdev_init_nofail(dev);
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/* Create bus on bridge device */
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_bus = qbus_create(TYPE_S390_VIRTIO_BUS, dev, "s390-virtio");
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bus = DO_UPCAST(VirtIOS390Bus, bus, _bus);
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bus->dev_page = *ram_size;
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bus->dev_offs = bus->dev_page;
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bus->next_ring = bus->dev_page + TARGET_PAGE_SIZE;
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/* Enable hotplugging */
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_bus->allow_hotplug = 1;
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/* Allocate RAM for VirtIO device pages (descriptors, queues, rings) */
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*ram_size += S390_DEVICE_PAGES * TARGET_PAGE_SIZE;
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qemu_register_reset(s390_virtio_bus_reset, bus);
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return bus;
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}
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static void s390_virtio_irq(CPUS390XState *env, int config_change, uint64_t token)
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{
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if (kvm_enabled()) {
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kvm_s390_virtio_irq(env, config_change, token);
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} else {
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cpu_inject_ext(env, VIRTIO_EXT_CODE, config_change, token);
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}
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}
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static int s390_virtio_device_init(VirtIOS390Device *dev, VirtIODevice *vdev)
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{
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VirtIOS390Bus *bus;
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int dev_len;
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bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
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dev->vdev = vdev;
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dev->dev_offs = bus->dev_offs;
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dev->feat_len = sizeof(uint32_t); /* always keep 32 bits features */
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dev_len = VIRTIO_DEV_OFFS_CONFIG;
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dev_len += s390_virtio_device_num_vq(dev) * VIRTIO_VQCONFIG_LEN;
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dev_len += dev->feat_len * 2;
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dev_len += vdev->config_len;
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bus->dev_offs += dev_len;
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virtio_bind_device(vdev, &virtio_s390_bindings, dev);
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dev->host_features = vdev->get_features(vdev, dev->host_features);
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s390_virtio_device_sync(dev);
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s390_virtio_reset_idx(dev);
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if (dev->qdev.hotplugged) {
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S390CPU *cpu = s390_cpu_addr2state(0);
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CPUS390XState *env = &cpu->env;
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s390_virtio_irq(env, VIRTIO_PARAM_DEV_ADD, dev->dev_offs);
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}
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return 0;
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}
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static int s390_virtio_net_init(VirtIOS390Device *dev)
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{
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VirtIODevice *vdev;
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vdev = virtio_net_init((DeviceState *)dev, &dev->nic, &dev->net);
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if (!vdev) {
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return -1;
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}
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return s390_virtio_device_init(dev, vdev);
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}
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static int s390_virtio_blk_init(VirtIOS390Device *dev)
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{
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VirtIODevice *vdev;
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vdev = virtio_blk_init((DeviceState *)dev, &dev->blk);
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if (!vdev) {
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return -1;
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}
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return s390_virtio_device_init(dev, vdev);
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}
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static int s390_virtio_serial_init(VirtIOS390Device *dev)
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{
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VirtIOS390Bus *bus;
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VirtIODevice *vdev;
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int r;
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bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
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vdev = virtio_serial_init((DeviceState *)dev, &dev->serial);
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if (!vdev) {
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return -1;
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}
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r = s390_virtio_device_init(dev, vdev);
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if (!r) {
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bus->console = dev;
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}
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return r;
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}
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static int s390_virtio_scsi_init(VirtIOS390Device *dev)
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{
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VirtIODevice *vdev;
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vdev = virtio_scsi_init((DeviceState *)dev, &dev->scsi);
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if (!vdev) {
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return -1;
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}
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return s390_virtio_device_init(dev, vdev);
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}
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static uint64_t s390_virtio_device_vq_token(VirtIOS390Device *dev, int vq)
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{
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ram_addr_t token_off;
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token_off = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
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(vq * VIRTIO_VQCONFIG_LEN) +
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VIRTIO_VQCONFIG_OFFS_TOKEN;
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return ldq_be_phys(token_off);
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}
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static ram_addr_t s390_virtio_device_num_vq(VirtIOS390Device *dev)
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{
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VirtIODevice *vdev = dev->vdev;
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int num_vq;
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for (num_vq = 0; num_vq < VIRTIO_PCI_QUEUE_MAX; num_vq++) {
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if (!virtio_queue_get_num(vdev, num_vq)) {
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break;
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}
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}
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return num_vq;
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}
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static ram_addr_t s390_virtio_next_ring(VirtIOS390Bus *bus)
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{
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ram_addr_t r = bus->next_ring;
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bus->next_ring += VIRTIO_RING_LEN;
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return r;
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}
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void s390_virtio_device_sync(VirtIOS390Device *dev)
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{
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VirtIOS390Bus *bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
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ram_addr_t cur_offs;
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uint8_t num_vq;
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int i;
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virtio_reset(dev->vdev);
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/* Sync dev space */
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stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_TYPE, dev->vdev->device_id);
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stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ, s390_virtio_device_num_vq(dev));
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stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_FEATURE_LEN, dev->feat_len);
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stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG_LEN, dev->vdev->config_len);
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num_vq = s390_virtio_device_num_vq(dev);
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stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ, num_vq);
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/* Sync virtqueues */
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for (i = 0; i < num_vq; i++) {
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ram_addr_t vq = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
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(i * VIRTIO_VQCONFIG_LEN);
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ram_addr_t vring;
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vring = s390_virtio_next_ring(bus);
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virtio_queue_set_addr(dev->vdev, i, vring);
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virtio_queue_set_vector(dev->vdev, i, i);
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stq_be_phys(vq + VIRTIO_VQCONFIG_OFFS_ADDRESS, vring);
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stw_be_phys(vq + VIRTIO_VQCONFIG_OFFS_NUM, virtio_queue_get_num(dev->vdev, i));
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}
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cur_offs = dev->dev_offs;
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cur_offs += VIRTIO_DEV_OFFS_CONFIG;
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cur_offs += num_vq * VIRTIO_VQCONFIG_LEN;
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/* Sync feature bitmap */
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stl_le_phys(cur_offs, dev->host_features);
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dev->feat_offs = cur_offs + dev->feat_len;
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cur_offs += dev->feat_len * 2;
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/* Sync config space */
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if (dev->vdev->get_config) {
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dev->vdev->get_config(dev->vdev, dev->vdev->config);
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}
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cpu_physical_memory_write(cur_offs,
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dev->vdev->config, dev->vdev->config_len);
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cur_offs += dev->vdev->config_len;
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}
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void s390_virtio_device_update_status(VirtIOS390Device *dev)
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{
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VirtIODevice *vdev = dev->vdev;
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uint32_t features;
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virtio_set_status(vdev, ldub_phys(dev->dev_offs + VIRTIO_DEV_OFFS_STATUS));
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/* Update guest supported feature bitmap */
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features = bswap32(ldl_be_phys(dev->feat_offs));
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virtio_set_features(vdev, features);
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}
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VirtIOS390Device *s390_virtio_bus_console(VirtIOS390Bus *bus)
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{
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return bus->console;
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}
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/* Find a device by vring address */
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VirtIOS390Device *s390_virtio_bus_find_vring(VirtIOS390Bus *bus,
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ram_addr_t mem,
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int *vq_num)
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{
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VirtIOS390Device *_dev;
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DeviceState *dev;
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int i;
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QTAILQ_FOREACH(dev, &bus->bus.children, sibling) {
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_dev = (VirtIOS390Device *)dev;
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for(i = 0; i < VIRTIO_PCI_QUEUE_MAX; i++) {
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if (!virtio_queue_get_addr(_dev->vdev, i))
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break;
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if (virtio_queue_get_addr(_dev->vdev, i) == mem) {
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if (vq_num) {
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*vq_num = i;
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}
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return _dev;
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}
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}
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}
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return NULL;
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}
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/* Find a device by device descriptor location */
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VirtIOS390Device *s390_virtio_bus_find_mem(VirtIOS390Bus *bus, ram_addr_t mem)
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{
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VirtIOS390Device *_dev;
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DeviceState *dev;
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QTAILQ_FOREACH(dev, &bus->bus.children, sibling) {
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_dev = (VirtIOS390Device *)dev;
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if (_dev->dev_offs == mem) {
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return _dev;
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}
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}
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return NULL;
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}
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static void virtio_s390_notify(void *opaque, uint16_t vector)
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{
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VirtIOS390Device *dev = (VirtIOS390Device*)opaque;
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uint64_t token = s390_virtio_device_vq_token(dev, vector);
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S390CPU *cpu = s390_cpu_addr2state(0);
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CPUS390XState *env = &cpu->env;
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s390_virtio_irq(env, 0, token);
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}
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static unsigned virtio_s390_get_features(void *opaque)
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{
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VirtIOS390Device *dev = (VirtIOS390Device*)opaque;
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return dev->host_features;
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}
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/**************** S390 Virtio Bus Device Descriptions *******************/
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static const VirtIOBindings virtio_s390_bindings = {
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.notify = virtio_s390_notify,
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.get_features = virtio_s390_get_features,
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};
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static Property s390_virtio_net_properties[] = {
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DEFINE_NIC_PROPERTIES(VirtIOS390Device, nic),
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DEFINE_PROP_UINT32("x-txtimer", VirtIOS390Device,
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net.txtimer, TX_TIMER_INTERVAL),
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DEFINE_PROP_INT32("x-txburst", VirtIOS390Device,
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net.txburst, TX_BURST),
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DEFINE_PROP_STRING("tx", VirtIOS390Device, net.tx),
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DEFINE_PROP_END_OF_LIST(),
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};
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static void s390_virtio_net_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
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k->init = s390_virtio_net_init;
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dc->props = s390_virtio_net_properties;
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}
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static TypeInfo s390_virtio_net = {
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.name = "virtio-net-s390",
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.parent = TYPE_VIRTIO_S390_DEVICE,
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.instance_size = sizeof(VirtIOS390Device),
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.class_init = s390_virtio_net_class_init,
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};
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static Property s390_virtio_blk_properties[] = {
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DEFINE_BLOCK_PROPERTIES(VirtIOS390Device, blk.conf),
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DEFINE_PROP_STRING("serial", VirtIOS390Device, blk.serial),
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#ifdef __linux__
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DEFINE_PROP_BIT("scsi", VirtIOS390Device, blk.scsi, 0, true),
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#endif
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DEFINE_PROP_END_OF_LIST(),
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};
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static void s390_virtio_blk_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
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k->init = s390_virtio_blk_init;
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dc->props = s390_virtio_blk_properties;
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}
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static TypeInfo s390_virtio_blk = {
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.name = "virtio-blk-s390",
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.parent = TYPE_VIRTIO_S390_DEVICE,
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.instance_size = sizeof(VirtIOS390Device),
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.class_init = s390_virtio_blk_class_init,
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};
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static Property s390_virtio_serial_properties[] = {
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DEFINE_PROP_UINT32("max_ports", VirtIOS390Device,
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serial.max_virtserial_ports, 31),
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DEFINE_PROP_END_OF_LIST(),
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};
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static void s390_virtio_serial_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
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k->init = s390_virtio_serial_init;
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dc->props = s390_virtio_serial_properties;
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}
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static TypeInfo s390_virtio_serial = {
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.name = "virtio-serial-s390",
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.parent = TYPE_VIRTIO_S390_DEVICE,
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.instance_size = sizeof(VirtIOS390Device),
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.class_init = s390_virtio_serial_class_init,
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};
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static int s390_virtio_busdev_init(DeviceState *dev)
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{
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VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
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VirtIOS390DeviceClass *_info = VIRTIO_S390_DEVICE_GET_CLASS(dev);
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return _info->init(_dev);
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}
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static void virtio_s390_device_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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dc->init = s390_virtio_busdev_init;
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dc->bus_type = TYPE_S390_VIRTIO_BUS;
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dc->unplug = qdev_simple_unplug_cb;
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}
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static TypeInfo virtio_s390_device_info = {
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.name = TYPE_VIRTIO_S390_DEVICE,
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.parent = TYPE_DEVICE,
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.instance_size = sizeof(VirtIOS390Device),
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.class_init = virtio_s390_device_class_init,
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.class_size = sizeof(VirtIOS390DeviceClass),
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.abstract = true,
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};
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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)
|