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s390: Add new channel I/O based virtio transport.
Add a new virtio transport that uses channel commands to perform virtio operations. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Cornelia Huck
Alexander Graf
parent
fad37673f5
commit
a5cf2bb4e3
@ -7,3 +7,4 @@ obj-y += event-facility.o
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obj-y += sclpquiesce.o sclpconsole.o
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obj-y += ipl.o
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obj-y += css.o
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obj-y += virtio-ccw.o
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960
hw/s390x/virtio-ccw.c
Normal file
960
hw/s390x/virtio-ccw.c
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@ -0,0 +1,960 @@
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/*
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* virtio ccw target implementation
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*
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* Copyright 2012 IBM Corp.
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* Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or (at
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* your option) any later version. See the COPYING file in the top-level
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* directory.
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*/
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#include "hw/hw.h"
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#include "block/block.h"
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#include "sysemu/blockdev.h"
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#include "sysemu/sysemu.h"
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#include "net/net.h"
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#include "monitor/monitor.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 "qemu/bitops.h"
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#include "hw/virtio-bus.h"
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#include "ioinst.h"
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#include "css.h"
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#include "virtio-ccw.h"
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#include "trace.h"
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static int virtual_css_bus_reset(BusState *qbus)
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{
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/* This should actually be modelled via the generic css */
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css_reset();
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/* we dont traverse ourself, return 0 */
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return 0;
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}
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static void virtual_css_bus_class_init(ObjectClass *klass, void *data)
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{
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BusClass *k = BUS_CLASS(klass);
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k->reset = virtual_css_bus_reset;
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}
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static const TypeInfo virtual_css_bus_info = {
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.name = TYPE_VIRTUAL_CSS_BUS,
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.parent = TYPE_BUS,
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.instance_size = sizeof(VirtualCssBus),
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.class_init = virtual_css_bus_class_init,
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};
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static const VirtIOBindings virtio_ccw_bindings;
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VirtIODevice *virtio_ccw_get_vdev(SubchDev *sch)
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{
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VirtIODevice *vdev = NULL;
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if (sch->driver_data) {
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vdev = ((VirtioCcwDevice *)sch->driver_data)->vdev;
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}
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return vdev;
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}
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VirtualCssBus *virtual_css_bus_init(void)
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{
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VirtualCssBus *cbus;
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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, "virtual-css-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_VIRTUAL_CSS_BUS, dev, "virtual-css");
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cbus = VIRTUAL_CSS_BUS(bus);
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/* Enable hotplugging */
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bus->allow_hotplug = 1;
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return cbus;
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}
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/* Communication blocks used by several channel commands. */
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typedef struct VqInfoBlock {
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uint64_t queue;
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uint32_t align;
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uint16_t index;
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uint16_t num;
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} QEMU_PACKED VqInfoBlock;
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typedef struct VqConfigBlock {
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uint16_t index;
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uint16_t num_max;
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} QEMU_PACKED VqConfigBlock;
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typedef struct VirtioFeatDesc {
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uint32_t features;
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uint8_t index;
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} QEMU_PACKED VirtioFeatDesc;
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/* Specify where the virtqueues for the subchannel are in guest memory. */
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static int virtio_ccw_set_vqs(SubchDev *sch, uint64_t addr, uint32_t align,
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uint16_t index, uint16_t num)
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{
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VirtioCcwDevice *dev = sch->driver_data;
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if (index > VIRTIO_PCI_QUEUE_MAX) {
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return -EINVAL;
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}
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/* Current code in virtio.c relies on 4K alignment. */
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if (addr && (align != 4096)) {
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return -EINVAL;
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}
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if (!dev) {
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return -EINVAL;
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}
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virtio_queue_set_addr(dev->vdev, index, addr);
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if (!addr) {
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virtio_queue_set_vector(dev->vdev, index, 0);
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} else {
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/* Fail if we don't have a big enough queue. */
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/* TODO: Add interface to handle vring.num changing */
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if (virtio_queue_get_num(dev->vdev, index) > num) {
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return -EINVAL;
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}
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virtio_queue_set_vector(dev->vdev, index, index);
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}
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/* tell notify handler in case of config change */
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dev->vdev->config_vector = VIRTIO_PCI_QUEUE_MAX;
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return 0;
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}
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static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
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{
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int ret;
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VqInfoBlock info;
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uint8_t status;
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VirtioFeatDesc features;
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void *config;
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hwaddr indicators;
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VqConfigBlock vq_config;
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VirtioCcwDevice *dev = sch->driver_data;
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bool check_len;
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int len;
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hwaddr hw_len;
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if (!dev) {
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return -EINVAL;
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}
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trace_virtio_ccw_interpret_ccw(sch->cssid, sch->ssid, sch->schid,
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ccw.cmd_code);
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check_len = !((ccw.flags & CCW_FLAG_SLI) && !(ccw.flags & CCW_FLAG_DC));
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/* Look at the command. */
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switch (ccw.cmd_code) {
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case CCW_CMD_SET_VQ:
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if (check_len) {
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if (ccw.count != sizeof(info)) {
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ret = -EINVAL;
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break;
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}
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} else if (ccw.count < sizeof(info)) {
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/* Can't execute command. */
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ret = -EINVAL;
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break;
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}
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if (!ccw.cda) {
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ret = -EFAULT;
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} else {
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info.queue = ldq_phys(ccw.cda);
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info.align = ldl_phys(ccw.cda + sizeof(info.queue));
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info.index = lduw_phys(ccw.cda + sizeof(info.queue)
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+ sizeof(info.align));
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info.num = lduw_phys(ccw.cda + sizeof(info.queue)
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+ sizeof(info.align)
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+ sizeof(info.index));
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ret = virtio_ccw_set_vqs(sch, info.queue, info.align, info.index,
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info.num);
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sch->curr_status.scsw.count = 0;
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}
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break;
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case CCW_CMD_VDEV_RESET:
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virtio_reset(dev->vdev);
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ret = 0;
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break;
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case CCW_CMD_READ_FEAT:
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if (check_len) {
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if (ccw.count != sizeof(features)) {
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ret = -EINVAL;
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break;
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}
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} else if (ccw.count < sizeof(features)) {
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/* Can't execute command. */
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ret = -EINVAL;
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break;
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}
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if (!ccw.cda) {
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ret = -EFAULT;
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} else {
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features.index = ldub_phys(ccw.cda + sizeof(features.features));
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if (features.index < ARRAY_SIZE(dev->host_features)) {
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features.features = dev->host_features[features.index];
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} else {
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/* Return zeroes if the guest supports more feature bits. */
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features.features = 0;
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}
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stl_le_phys(ccw.cda, features.features);
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sch->curr_status.scsw.count = ccw.count - sizeof(features);
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ret = 0;
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}
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break;
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case CCW_CMD_WRITE_FEAT:
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if (check_len) {
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if (ccw.count != sizeof(features)) {
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ret = -EINVAL;
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break;
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}
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} else if (ccw.count < sizeof(features)) {
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/* Can't execute command. */
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ret = -EINVAL;
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break;
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}
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if (!ccw.cda) {
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ret = -EFAULT;
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} else {
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features.index = ldub_phys(ccw.cda + sizeof(features.features));
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features.features = ldl_le_phys(ccw.cda);
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if (features.index < ARRAY_SIZE(dev->host_features)) {
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if (dev->vdev->set_features) {
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dev->vdev->set_features(dev->vdev, features.features);
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}
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dev->vdev->guest_features = features.features;
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} else {
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/*
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* If the guest supports more feature bits, assert that it
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* passes us zeroes for those we don't support.
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*/
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if (features.features) {
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fprintf(stderr, "Guest bug: features[%i]=%x (expected 0)\n",
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features.index, features.features);
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/* XXX: do a unit check here? */
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}
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}
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sch->curr_status.scsw.count = ccw.count - sizeof(features);
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ret = 0;
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}
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break;
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case CCW_CMD_READ_CONF:
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if (check_len) {
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if (ccw.count > dev->vdev->config_len) {
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ret = -EINVAL;
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break;
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}
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}
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len = MIN(ccw.count, dev->vdev->config_len);
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if (!ccw.cda) {
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ret = -EFAULT;
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} else {
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dev->vdev->get_config(dev->vdev, dev->vdev->config);
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/* XXX config space endianness */
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cpu_physical_memory_write(ccw.cda, dev->vdev->config, len);
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sch->curr_status.scsw.count = ccw.count - len;
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ret = 0;
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}
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break;
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case CCW_CMD_WRITE_CONF:
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if (check_len) {
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if (ccw.count > dev->vdev->config_len) {
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ret = -EINVAL;
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break;
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}
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}
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len = MIN(ccw.count, dev->vdev->config_len);
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hw_len = len;
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if (!ccw.cda) {
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ret = -EFAULT;
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} else {
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config = cpu_physical_memory_map(ccw.cda, &hw_len, 0);
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if (!config) {
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ret = -EFAULT;
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} else {
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len = hw_len;
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/* XXX config space endianness */
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memcpy(dev->vdev->config, config, len);
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cpu_physical_memory_unmap(config, hw_len, 0, hw_len);
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if (dev->vdev->set_config) {
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dev->vdev->set_config(dev->vdev, dev->vdev->config);
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}
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sch->curr_status.scsw.count = ccw.count - len;
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ret = 0;
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}
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}
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break;
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case CCW_CMD_WRITE_STATUS:
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if (check_len) {
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if (ccw.count != sizeof(status)) {
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ret = -EINVAL;
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break;
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}
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} else if (ccw.count < sizeof(status)) {
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/* Can't execute command. */
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ret = -EINVAL;
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break;
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}
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if (!ccw.cda) {
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ret = -EFAULT;
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} else {
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status = ldub_phys(ccw.cda);
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virtio_set_status(dev->vdev, status);
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if (dev->vdev->status == 0) {
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virtio_reset(dev->vdev);
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}
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sch->curr_status.scsw.count = ccw.count - sizeof(status);
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ret = 0;
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}
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break;
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case CCW_CMD_SET_IND:
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if (check_len) {
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if (ccw.count != sizeof(indicators)) {
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ret = -EINVAL;
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break;
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}
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} else if (ccw.count < sizeof(indicators)) {
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/* Can't execute command. */
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ret = -EINVAL;
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break;
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}
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indicators = ldq_phys(ccw.cda);
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if (!indicators) {
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ret = -EFAULT;
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} else {
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dev->indicators = indicators;
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sch->curr_status.scsw.count = ccw.count - sizeof(indicators);
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ret = 0;
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}
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break;
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case CCW_CMD_SET_CONF_IND:
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if (check_len) {
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if (ccw.count != sizeof(indicators)) {
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ret = -EINVAL;
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break;
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}
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} else if (ccw.count < sizeof(indicators)) {
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/* Can't execute command. */
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ret = -EINVAL;
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break;
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}
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indicators = ldq_phys(ccw.cda);
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if (!indicators) {
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ret = -EFAULT;
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} else {
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dev->indicators2 = indicators;
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sch->curr_status.scsw.count = ccw.count - sizeof(indicators);
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ret = 0;
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}
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break;
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case CCW_CMD_READ_VQ_CONF:
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if (check_len) {
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if (ccw.count != sizeof(vq_config)) {
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ret = -EINVAL;
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break;
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}
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} else if (ccw.count < sizeof(vq_config)) {
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/* Can't execute command. */
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ret = -EINVAL;
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break;
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}
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if (!ccw.cda) {
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ret = -EFAULT;
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} else {
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vq_config.index = lduw_phys(ccw.cda);
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vq_config.num_max = virtio_queue_get_num(dev->vdev,
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vq_config.index);
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stw_phys(ccw.cda + sizeof(vq_config.index), vq_config.num_max);
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sch->curr_status.scsw.count = ccw.count - sizeof(vq_config);
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ret = 0;
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}
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break;
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default:
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ret = -EOPNOTSUPP;
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break;
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}
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return ret;
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}
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static int virtio_ccw_device_init(VirtioCcwDevice *dev, VirtIODevice *vdev)
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{
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unsigned int cssid = 0;
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unsigned int ssid = 0;
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unsigned int schid;
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unsigned int devno;
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bool have_devno = false;
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bool found = false;
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SubchDev *sch;
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int ret;
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int num;
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DeviceState *parent = DEVICE(dev);
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sch = g_malloc0(sizeof(SubchDev));
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sch->driver_data = dev;
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dev->sch = sch;
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dev->vdev = vdev;
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dev->indicators = 0;
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/* Initialize subchannel structure. */
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sch->channel_prog = 0x0;
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sch->last_cmd_valid = false;
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sch->orb = NULL;
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/*
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* Use a device number if provided. Otherwise, fall back to subchannel
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* number.
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*/
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if (dev->bus_id) {
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num = sscanf(dev->bus_id, "%x.%x.%04x", &cssid, &ssid, &devno);
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if (num == 3) {
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if ((cssid > MAX_CSSID) || (ssid > MAX_SSID)) {
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ret = -EINVAL;
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error_report("Invalid cssid or ssid: cssid %x, ssid %x",
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cssid, ssid);
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goto out_err;
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}
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/* Enforce use of virtual cssid. */
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if (cssid != VIRTUAL_CSSID) {
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ret = -EINVAL;
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error_report("cssid %x not valid for virtio devices", cssid);
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goto out_err;
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}
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if (css_devno_used(cssid, ssid, devno)) {
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ret = -EEXIST;
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error_report("Device %x.%x.%04x already exists", cssid, ssid,
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devno);
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goto out_err;
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}
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sch->cssid = cssid;
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sch->ssid = ssid;
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sch->devno = devno;
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have_devno = true;
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} else {
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ret = -EINVAL;
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error_report("Malformed devno parameter '%s'", dev->bus_id);
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goto out_err;
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}
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}
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/* Find the next free id. */
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if (have_devno) {
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for (schid = 0; schid <= MAX_SCHID; schid++) {
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if (!css_find_subch(1, cssid, ssid, schid)) {
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sch->schid = schid;
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css_subch_assign(cssid, ssid, schid, devno, sch);
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found = true;
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break;
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}
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}
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if (!found) {
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ret = -ENODEV;
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error_report("No free subchannel found for %x.%x.%04x", cssid, ssid,
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devno);
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goto out_err;
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}
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trace_virtio_ccw_new_device(cssid, ssid, schid, devno,
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"user-configured");
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} else {
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cssid = VIRTUAL_CSSID;
|
||||
for (ssid = 0; ssid <= MAX_SSID; ssid++) {
|
||||
for (schid = 0; schid <= MAX_SCHID; schid++) {
|
||||
if (!css_find_subch(1, cssid, ssid, schid)) {
|
||||
sch->cssid = cssid;
|
||||
sch->ssid = ssid;
|
||||
sch->schid = schid;
|
||||
devno = schid;
|
||||
/*
|
||||
* If the devno is already taken, look further in this
|
||||
* subchannel set.
|
||||
*/
|
||||
while (css_devno_used(cssid, ssid, devno)) {
|
||||
if (devno == MAX_SCHID) {
|
||||
devno = 0;
|
||||
} else if (devno == schid - 1) {
|
||||
ret = -ENODEV;
|
||||
error_report("No free devno found");
|
||||
goto out_err;
|
||||
} else {
|
||||
devno++;
|
||||
}
|
||||
}
|
||||
sch->devno = devno;
|
||||
css_subch_assign(cssid, ssid, schid, devno, sch);
|
||||
found = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (found) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (!found) {
|
||||
ret = -ENODEV;
|
||||
error_report("Virtual channel subsystem is full!");
|
||||
goto out_err;
|
||||
}
|
||||
trace_virtio_ccw_new_device(cssid, ssid, schid, devno,
|
||||
"auto-configured");
|
||||
}
|
||||
|
||||
/* Build initial schib. */
|
||||
css_sch_build_virtual_schib(sch, 0, VIRTIO_CCW_CHPID_TYPE);
|
||||
|
||||
sch->ccw_cb = virtio_ccw_cb;
|
||||
|
||||
/* Build senseid data. */
|
||||
memset(&sch->id, 0, sizeof(SenseId));
|
||||
sch->id.reserved = 0xff;
|
||||
sch->id.cu_type = VIRTIO_CCW_CU_TYPE;
|
||||
sch->id.cu_model = dev->vdev->device_id;
|
||||
|
||||
virtio_bind_device(vdev, &virtio_ccw_bindings, DEVICE(dev));
|
||||
/* Only the first 32 feature bits are used. */
|
||||
dev->host_features[0] = vdev->get_features(vdev, dev->host_features[0]);
|
||||
dev->host_features[0] |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY;
|
||||
dev->host_features[0] |= 0x1 << VIRTIO_F_BAD_FEATURE;
|
||||
|
||||
css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid,
|
||||
parent->hotplugged, 1);
|
||||
return 0;
|
||||
|
||||
out_err:
|
||||
dev->sch = NULL;
|
||||
g_free(sch);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int virtio_ccw_exit(VirtioCcwDevice *dev)
|
||||
{
|
||||
SubchDev *sch = dev->sch;
|
||||
|
||||
if (sch) {
|
||||
css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL);
|
||||
g_free(sch);
|
||||
}
|
||||
dev->indicators = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int virtio_ccw_net_init(VirtioCcwDevice *dev)
|
||||
{
|
||||
VirtIODevice *vdev;
|
||||
|
||||
vdev = virtio_net_init((DeviceState *)dev, &dev->nic, &dev->net);
|
||||
if (!vdev) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
return virtio_ccw_device_init(dev, vdev);
|
||||
}
|
||||
|
||||
static int virtio_ccw_net_exit(VirtioCcwDevice *dev)
|
||||
{
|
||||
virtio_net_exit(dev->vdev);
|
||||
return virtio_ccw_exit(dev);
|
||||
}
|
||||
|
||||
static int virtio_ccw_blk_init(VirtioCcwDevice *dev)
|
||||
{
|
||||
VirtIODevice *vdev;
|
||||
|
||||
vdev = virtio_blk_init((DeviceState *)dev, &dev->blk);
|
||||
if (!vdev) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
return virtio_ccw_device_init(dev, vdev);
|
||||
}
|
||||
|
||||
static int virtio_ccw_blk_exit(VirtioCcwDevice *dev)
|
||||
{
|
||||
virtio_blk_exit(dev->vdev);
|
||||
blockdev_mark_auto_del(dev->blk.conf.bs);
|
||||
return virtio_ccw_exit(dev);
|
||||
}
|
||||
|
||||
static int virtio_ccw_serial_init(VirtioCcwDevice *dev)
|
||||
{
|
||||
VirtIODevice *vdev;
|
||||
|
||||
vdev = virtio_serial_init((DeviceState *)dev, &dev->serial);
|
||||
if (!vdev) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
return virtio_ccw_device_init(dev, vdev);
|
||||
}
|
||||
|
||||
static int virtio_ccw_serial_exit(VirtioCcwDevice *dev)
|
||||
{
|
||||
virtio_serial_exit(dev->vdev);
|
||||
return virtio_ccw_exit(dev);
|
||||
}
|
||||
|
||||
static int virtio_ccw_balloon_init(VirtioCcwDevice *dev)
|
||||
{
|
||||
VirtIODevice *vdev;
|
||||
|
||||
vdev = virtio_balloon_init((DeviceState *)dev);
|
||||
if (!vdev) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
return virtio_ccw_device_init(dev, vdev);
|
||||
}
|
||||
|
||||
static int virtio_ccw_balloon_exit(VirtioCcwDevice *dev)
|
||||
{
|
||||
virtio_balloon_exit(dev->vdev);
|
||||
return virtio_ccw_exit(dev);
|
||||
}
|
||||
|
||||
static int virtio_ccw_scsi_init(VirtioCcwDevice *dev)
|
||||
{
|
||||
VirtIODevice *vdev;
|
||||
|
||||
vdev = virtio_scsi_init((DeviceState *)dev, &dev->scsi);
|
||||
if (!vdev) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
return virtio_ccw_device_init(dev, vdev);
|
||||
}
|
||||
|
||||
static int virtio_ccw_scsi_exit(VirtioCcwDevice *dev)
|
||||
{
|
||||
virtio_scsi_exit(dev->vdev);
|
||||
return virtio_ccw_exit(dev);
|
||||
}
|
||||
|
||||
/* DeviceState to VirtioCcwDevice. Note: used on datapath,
|
||||
* be careful and test performance if you change this.
|
||||
*/
|
||||
static inline VirtioCcwDevice *to_virtio_ccw_dev_fast(DeviceState *d)
|
||||
{
|
||||
return container_of(d, VirtioCcwDevice, parent_obj);
|
||||
}
|
||||
|
||||
static void virtio_ccw_notify(DeviceState *d, uint16_t vector)
|
||||
{
|
||||
VirtioCcwDevice *dev = to_virtio_ccw_dev_fast(d);
|
||||
SubchDev *sch = dev->sch;
|
||||
uint64_t indicators;
|
||||
|
||||
if (vector >= 128) {
|
||||
return;
|
||||
}
|
||||
|
||||
if (vector < VIRTIO_PCI_QUEUE_MAX) {
|
||||
indicators = ldq_phys(dev->indicators);
|
||||
set_bit(vector, &indicators);
|
||||
stq_phys(dev->indicators, indicators);
|
||||
} else {
|
||||
vector = 0;
|
||||
indicators = ldq_phys(dev->indicators2);
|
||||
set_bit(vector, &indicators);
|
||||
stq_phys(dev->indicators2, indicators);
|
||||
}
|
||||
|
||||
css_conditional_io_interrupt(sch);
|
||||
|
||||
}
|
||||
|
||||
static unsigned virtio_ccw_get_features(DeviceState *d)
|
||||
{
|
||||
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
|
||||
|
||||
/* Only the first 32 feature bits are used. */
|
||||
return dev->host_features[0];
|
||||
}
|
||||
|
||||
static void virtio_ccw_reset(DeviceState *d)
|
||||
{
|
||||
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
|
||||
|
||||
virtio_reset(dev->vdev);
|
||||
css_reset_sch(dev->sch);
|
||||
}
|
||||
|
||||
/**************** Virtio-ccw Bus Device Descriptions *******************/
|
||||
|
||||
static const VirtIOBindings virtio_ccw_bindings = {
|
||||
.notify = virtio_ccw_notify,
|
||||
.get_features = virtio_ccw_get_features,
|
||||
};
|
||||
|
||||
static Property virtio_ccw_net_properties[] = {
|
||||
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
||||
DEFINE_VIRTIO_NET_FEATURES(VirtioCcwDevice, host_features[0]),
|
||||
DEFINE_NIC_PROPERTIES(VirtioCcwDevice, nic),
|
||||
DEFINE_PROP_UINT32("x-txtimer", VirtioCcwDevice,
|
||||
net.txtimer, TX_TIMER_INTERVAL),
|
||||
DEFINE_PROP_INT32("x-txburst", VirtioCcwDevice,
|
||||
net.txburst, TX_BURST),
|
||||
DEFINE_PROP_STRING("tx", VirtioCcwDevice, net.tx),
|
||||
DEFINE_PROP_END_OF_LIST(),
|
||||
};
|
||||
|
||||
static void virtio_ccw_net_class_init(ObjectClass *klass, void *data)
|
||||
{
|
||||
DeviceClass *dc = DEVICE_CLASS(klass);
|
||||
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
|
||||
|
||||
k->init = virtio_ccw_net_init;
|
||||
k->exit = virtio_ccw_net_exit;
|
||||
dc->reset = virtio_ccw_reset;
|
||||
dc->props = virtio_ccw_net_properties;
|
||||
}
|
||||
|
||||
static const TypeInfo virtio_ccw_net = {
|
||||
.name = "virtio-net-ccw",
|
||||
.parent = TYPE_VIRTIO_CCW_DEVICE,
|
||||
.instance_size = sizeof(VirtioCcwDevice),
|
||||
.class_init = virtio_ccw_net_class_init,
|
||||
};
|
||||
|
||||
static Property virtio_ccw_blk_properties[] = {
|
||||
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
||||
DEFINE_BLOCK_PROPERTIES(VirtioCcwDevice, blk.conf),
|
||||
DEFINE_PROP_STRING("serial", VirtioCcwDevice, blk.serial),
|
||||
#ifdef __linux__
|
||||
DEFINE_PROP_BIT("scsi", VirtioCcwDevice, blk.scsi, 0, true),
|
||||
#endif
|
||||
DEFINE_VIRTIO_BLK_FEATURES(VirtioCcwDevice, host_features[0]),
|
||||
DEFINE_PROP_END_OF_LIST(),
|
||||
};
|
||||
|
||||
static void virtio_ccw_blk_class_init(ObjectClass *klass, void *data)
|
||||
{
|
||||
DeviceClass *dc = DEVICE_CLASS(klass);
|
||||
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
|
||||
|
||||
k->init = virtio_ccw_blk_init;
|
||||
k->exit = virtio_ccw_blk_exit;
|
||||
dc->reset = virtio_ccw_reset;
|
||||
dc->props = virtio_ccw_blk_properties;
|
||||
}
|
||||
|
||||
static const TypeInfo virtio_ccw_blk = {
|
||||
.name = "virtio-blk-ccw",
|
||||
.parent = TYPE_VIRTIO_CCW_DEVICE,
|
||||
.instance_size = sizeof(VirtioCcwDevice),
|
||||
.class_init = virtio_ccw_blk_class_init,
|
||||
};
|
||||
|
||||
static Property virtio_ccw_serial_properties[] = {
|
||||
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
||||
DEFINE_PROP_UINT32("max_ports", VirtioCcwDevice,
|
||||
serial.max_virtserial_ports, 31),
|
||||
DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]),
|
||||
DEFINE_PROP_END_OF_LIST(),
|
||||
};
|
||||
|
||||
static void virtio_ccw_serial_class_init(ObjectClass *klass, void *data)
|
||||
{
|
||||
DeviceClass *dc = DEVICE_CLASS(klass);
|
||||
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
|
||||
|
||||
k->init = virtio_ccw_serial_init;
|
||||
k->exit = virtio_ccw_serial_exit;
|
||||
dc->reset = virtio_ccw_reset;
|
||||
dc->props = virtio_ccw_serial_properties;
|
||||
}
|
||||
|
||||
static const TypeInfo virtio_ccw_serial = {
|
||||
.name = "virtio-serial-ccw",
|
||||
.parent = TYPE_VIRTIO_CCW_DEVICE,
|
||||
.instance_size = sizeof(VirtioCcwDevice),
|
||||
.class_init = virtio_ccw_serial_class_init,
|
||||
};
|
||||
|
||||
static Property virtio_ccw_balloon_properties[] = {
|
||||
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
||||
DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]),
|
||||
DEFINE_PROP_END_OF_LIST(),
|
||||
};
|
||||
|
||||
static void virtio_ccw_balloon_class_init(ObjectClass *klass, void *data)
|
||||
{
|
||||
DeviceClass *dc = DEVICE_CLASS(klass);
|
||||
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
|
||||
|
||||
k->init = virtio_ccw_balloon_init;
|
||||
k->exit = virtio_ccw_balloon_exit;
|
||||
dc->reset = virtio_ccw_reset;
|
||||
dc->props = virtio_ccw_balloon_properties;
|
||||
}
|
||||
|
||||
static const TypeInfo virtio_ccw_balloon = {
|
||||
.name = "virtio-balloon-ccw",
|
||||
.parent = TYPE_VIRTIO_CCW_DEVICE,
|
||||
.instance_size = sizeof(VirtioCcwDevice),
|
||||
.class_init = virtio_ccw_balloon_class_init,
|
||||
};
|
||||
|
||||
static Property virtio_ccw_scsi_properties[] = {
|
||||
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
||||
DEFINE_VIRTIO_SCSI_PROPERTIES(VirtioCcwDevice, host_features[0], scsi),
|
||||
DEFINE_PROP_END_OF_LIST(),
|
||||
};
|
||||
|
||||
static void virtio_ccw_scsi_class_init(ObjectClass *klass, void *data)
|
||||
{
|
||||
DeviceClass *dc = DEVICE_CLASS(klass);
|
||||
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
|
||||
|
||||
k->init = virtio_ccw_scsi_init;
|
||||
k->exit = virtio_ccw_scsi_exit;
|
||||
dc->reset = virtio_ccw_reset;
|
||||
dc->props = virtio_ccw_scsi_properties;
|
||||
}
|
||||
|
||||
static const TypeInfo virtio_ccw_scsi = {
|
||||
.name = "virtio-scsi-ccw",
|
||||
.parent = TYPE_VIRTIO_CCW_DEVICE,
|
||||
.instance_size = sizeof(VirtioCcwDevice),
|
||||
.class_init = virtio_ccw_scsi_class_init,
|
||||
};
|
||||
|
||||
static int virtio_ccw_busdev_init(DeviceState *dev)
|
||||
{
|
||||
VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev;
|
||||
VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev);
|
||||
|
||||
virtio_ccw_bus_new(&_dev->bus, _dev);
|
||||
|
||||
return _info->init(_dev);
|
||||
}
|
||||
|
||||
static int virtio_ccw_busdev_exit(DeviceState *dev)
|
||||
{
|
||||
VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev;
|
||||
VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev);
|
||||
|
||||
return _info->exit(_dev);
|
||||
}
|
||||
|
||||
static int virtio_ccw_busdev_unplug(DeviceState *dev)
|
||||
{
|
||||
VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev;
|
||||
SubchDev *sch = _dev->sch;
|
||||
|
||||
/*
|
||||
* We should arrive here only for device_del, since we don't support
|
||||
* direct hot(un)plug of channels, but only through virtio.
|
||||
*/
|
||||
assert(sch != NULL);
|
||||
/* Subchannel is now disabled and no longer valid. */
|
||||
sch->curr_status.pmcw.flags &= ~(PMCW_FLAGS_MASK_ENA |
|
||||
PMCW_FLAGS_MASK_DNV);
|
||||
|
||||
css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid, 1, 0);
|
||||
|
||||
object_unparent(OBJECT(dev));
|
||||
qdev_free(dev);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void virtio_ccw_device_class_init(ObjectClass *klass, void *data)
|
||||
{
|
||||
DeviceClass *dc = DEVICE_CLASS(klass);
|
||||
|
||||
dc->init = virtio_ccw_busdev_init;
|
||||
dc->exit = virtio_ccw_busdev_exit;
|
||||
dc->unplug = virtio_ccw_busdev_unplug;
|
||||
dc->bus_type = TYPE_VIRTUAL_CSS_BUS;
|
||||
|
||||
}
|
||||
|
||||
static const TypeInfo virtio_ccw_device_info = {
|
||||
.name = TYPE_VIRTIO_CCW_DEVICE,
|
||||
.parent = TYPE_DEVICE,
|
||||
.instance_size = sizeof(VirtioCcwDevice),
|
||||
.class_init = virtio_ccw_device_class_init,
|
||||
.class_size = sizeof(VirtIOCCWDeviceClass),
|
||||
.abstract = true,
|
||||
};
|
||||
|
||||
/***************** Virtual-css Bus Bridge Device ********************/
|
||||
/* Only required to have the virtio bus as child in the system bus */
|
||||
|
||||
static int virtual_css_bridge_init(SysBusDevice *dev)
|
||||
{
|
||||
/* nothing */
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void virtual_css_bridge_class_init(ObjectClass *klass, void *data)
|
||||
{
|
||||
DeviceClass *dc = DEVICE_CLASS(klass);
|
||||
SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
|
||||
|
||||
k->init = virtual_css_bridge_init;
|
||||
dc->no_user = 1;
|
||||
}
|
||||
|
||||
static const TypeInfo virtual_css_bridge_info = {
|
||||
.name = "virtual-css-bridge",
|
||||
.parent = TYPE_SYS_BUS_DEVICE,
|
||||
.instance_size = sizeof(SysBusDevice),
|
||||
.class_init = virtual_css_bridge_class_init,
|
||||
};
|
||||
|
||||
/* virtio-ccw-bus */
|
||||
|
||||
void virtio_ccw_bus_new(VirtioBusState *bus, VirtioCcwDevice *dev)
|
||||
{
|
||||
DeviceState *qdev = DEVICE(dev);
|
||||
BusState *qbus;
|
||||
|
||||
qbus_create_inplace((BusState *)bus, TYPE_VIRTIO_CCW_BUS, qdev, NULL);
|
||||
qbus = BUS(bus);
|
||||
qbus->allow_hotplug = 0;
|
||||
}
|
||||
|
||||
static void virtio_ccw_bus_class_init(ObjectClass *klass, void *data)
|
||||
{
|
||||
VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
|
||||
BusClass *bus_class = BUS_CLASS(klass);
|
||||
|
||||
bus_class->max_dev = 1;
|
||||
k->notify = virtio_ccw_notify;
|
||||
k->get_features = virtio_ccw_get_features;
|
||||
}
|
||||
|
||||
static const TypeInfo virtio_ccw_bus_info = {
|
||||
.name = TYPE_VIRTIO_CCW_BUS,
|
||||
.parent = TYPE_VIRTIO_BUS,
|
||||
.instance_size = sizeof(VirtioCcwBusState),
|
||||
.class_init = virtio_ccw_bus_class_init,
|
||||
};
|
||||
|
||||
static void virtio_ccw_register(void)
|
||||
{
|
||||
type_register_static(&virtio_ccw_bus_info);
|
||||
type_register_static(&virtual_css_bus_info);
|
||||
type_register_static(&virtio_ccw_device_info);
|
||||
type_register_static(&virtio_ccw_serial);
|
||||
type_register_static(&virtio_ccw_blk);
|
||||
type_register_static(&virtio_ccw_net);
|
||||
type_register_static(&virtio_ccw_balloon);
|
||||
type_register_static(&virtio_ccw_scsi);
|
||||
type_register_static(&virtual_css_bridge_info);
|
||||
}
|
||||
|
||||
type_init(virtio_ccw_register)
|
||||
98
hw/s390x/virtio-ccw.h
Normal file
98
hw/s390x/virtio-ccw.h
Normal file
@ -0,0 +1,98 @@
|
||||
/*
|
||||
* virtio ccw target definitions
|
||||
*
|
||||
* Copyright 2012 IBM Corp.
|
||||
* Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
|
||||
*
|
||||
* This work is licensed under the terms of the GNU GPL, version 2 or (at
|
||||
* your option) any later version. See the COPYING file in the top-level
|
||||
* directory.
|
||||
*/
|
||||
|
||||
#ifndef HW_S390X_VIRTIO_CCW_H
|
||||
#define HW_S390X_VIRTIO_CCW_H
|
||||
|
||||
#include <hw/virtio-blk.h>
|
||||
#include <hw/virtio-net.h>
|
||||
#include <hw/virtio-serial.h>
|
||||
#include <hw/virtio-scsi.h>
|
||||
#include <hw/virtio-bus.h>
|
||||
|
||||
#define VIRTUAL_CSSID 0xfe
|
||||
|
||||
#define VIRTIO_CCW_CU_TYPE 0x3832
|
||||
#define VIRTIO_CCW_CHPID_TYPE 0x32
|
||||
|
||||
#define CCW_CMD_SET_VQ 0x13
|
||||
#define CCW_CMD_VDEV_RESET 0x33
|
||||
#define CCW_CMD_READ_FEAT 0x12
|
||||
#define CCW_CMD_WRITE_FEAT 0x11
|
||||
#define CCW_CMD_READ_CONF 0x22
|
||||
#define CCW_CMD_WRITE_CONF 0x21
|
||||
#define CCW_CMD_WRITE_STATUS 0x31
|
||||
#define CCW_CMD_SET_IND 0x43
|
||||
#define CCW_CMD_SET_CONF_IND 0x53
|
||||
#define CCW_CMD_READ_VQ_CONF 0x32
|
||||
|
||||
#define TYPE_VIRTIO_CCW_DEVICE "virtio-ccw-device"
|
||||
#define VIRTIO_CCW_DEVICE(obj) \
|
||||
OBJECT_CHECK(VirtioCcwDevice, (obj), TYPE_VIRTIO_CCW_DEVICE)
|
||||
#define VIRTIO_CCW_DEVICE_CLASS(klass) \
|
||||
OBJECT_CLASS_CHECK(VirtIOCCWDeviceClass, (klass), TYPE_VIRTIO_CCW_DEVICE)
|
||||
#define VIRTIO_CCW_DEVICE_GET_CLASS(obj) \
|
||||
OBJECT_GET_CLASS(VirtIOCCWDeviceClass, (obj), TYPE_VIRTIO_CCW_DEVICE)
|
||||
|
||||
typedef struct VirtioBusState VirtioCcwBusState;
|
||||
typedef struct VirtioBusClass VirtioCcwBusClass;
|
||||
|
||||
#define TYPE_VIRTIO_CCW_BUS "virtio-ccw-bus"
|
||||
#define VIRTIO_CCW_BUS(obj) \
|
||||
OBJECT_CHECK(VirtioCcwBus, (obj), TYPE_VIRTIO_CCW_BUS)
|
||||
#define VIRTIO_CCW_BUS_GET_CLASS(obj) \
|
||||
OBJECT_CHECK(VirtioCcwBusState, (obj), TYPE_VIRTIO_CCW_BUS)
|
||||
#define VIRTIO_CCW_BUS_CLASS(klass) \
|
||||
OBJECT_CLASS_CHECK(VirtioCcwBusClass, klass, TYPE_VIRTIO_CCW_BUS)
|
||||
|
||||
typedef struct VirtioCcwDevice VirtioCcwDevice;
|
||||
|
||||
void virtio_ccw_bus_new(VirtioBusState *bus, VirtioCcwDevice *dev);
|
||||
|
||||
typedef struct VirtIOCCWDeviceClass {
|
||||
DeviceClass parent_class;
|
||||
int (*init)(VirtioCcwDevice *dev);
|
||||
int (*exit)(VirtioCcwDevice *dev);
|
||||
} VirtIOCCWDeviceClass;
|
||||
|
||||
/* Change here if we want to support more feature bits. */
|
||||
#define VIRTIO_CCW_FEATURE_SIZE 1
|
||||
|
||||
struct VirtioCcwDevice {
|
||||
DeviceState parent_obj;
|
||||
SubchDev *sch;
|
||||
VirtIODevice *vdev;
|
||||
char *bus_id;
|
||||
VirtIOBlkConf blk;
|
||||
NICConf nic;
|
||||
uint32_t host_features[VIRTIO_CCW_FEATURE_SIZE];
|
||||
virtio_serial_conf serial;
|
||||
virtio_net_conf net;
|
||||
VirtIOSCSIConf scsi;
|
||||
VirtioBusState bus;
|
||||
/* Guest provided values: */
|
||||
hwaddr indicators;
|
||||
hwaddr indicators2;
|
||||
};
|
||||
|
||||
/* virtual css bus type */
|
||||
typedef struct VirtualCssBus {
|
||||
BusState parent_obj;
|
||||
} VirtualCssBus;
|
||||
|
||||
#define TYPE_VIRTUAL_CSS_BUS "virtual-css-bus"
|
||||
#define VIRTUAL_CSS_BUS(obj) \
|
||||
OBJECT_CHECK(VirtualCssBus, (obj), TYPE_VIRTUAL_CSS_BUS)
|
||||
|
||||
VirtualCssBus *virtual_css_bus_init(void);
|
||||
void virtio_ccw_device_update_status(SubchDev *sch);
|
||||
VirtIODevice *virtio_ccw_get_vdev(SubchDev *sch);
|
||||
#endif
|
||||
@ -1086,3 +1086,7 @@ css_chpid_add(uint8_t cssid, uint8_t chpid, uint8_t type) "CSS: add chpid %x.%02
|
||||
css_new_image(uint8_t cssid, const char *default_cssid) "CSS: add css image %02x %s"
|
||||
css_assign_subch(const char *do_assign, uint8_t cssid, uint8_t ssid, uint16_t schid, uint16_t devno) "CSS: %s %x.%x.%04x (devno %04x)"
|
||||
css_io_interrupt(int cssid, int ssid, int schid, uint32_t intparm, uint8_t isc, const char *conditional) "CSS: I/O interrupt on sch %x.%x.%04x (intparm %08x, isc %x) %s"
|
||||
|
||||
# hw/s390x/virtio-ccw.c
|
||||
virtio_ccw_interpret_ccw(int cssid, int ssid, int schid, int cmd_code) "VIRTIO-CCW: %x.%x.%04x: interpret command %x"
|
||||
virtio_ccw_new_device(int cssid, int ssid, int schid, int devno, const char *devno_mode) "VIRTIO-CCW: add subchannel %x.%x.%04x, devno %04x (%s)"
|
||||
|
||||
Loading…
Reference in New Issue
Block a user