root / hw / s390x / virtio-ccw.c @ f4dd69aa
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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/virtio.h" |
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#include "hw/virtio/virtio-serial.h" |
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#include "hw/virtio/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/virtio-bus.h" |
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|
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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 void virtio_ccw_bus_new(VirtioBusState *bus, VirtioCcwDevice *dev); |
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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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VirtIODevice *virtio_ccw_get_vdev(SubchDev *sch) |
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{ |
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VirtIODevice *vdev = NULL;
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|
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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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|
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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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|
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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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} |
156 |
|
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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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|
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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; |
206 |
} 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]; |
210 |
} 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); |
215 |
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; |
223 |
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; |
232 |
} 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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virtio_bus_set_vdev_features(&dev->bus, features.features); |
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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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} |
248 |
} |
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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); |
261 |
if (!ccw.cda) {
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ret = -EFAULT; |
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} else {
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virtio_bus_get_vdev_config(&dev->bus, 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; |
275 |
break;
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} |
277 |
} |
278 |
len = MIN(ccw.count, dev->vdev->config_len); |
279 |
hw_len = len; |
280 |
if (!ccw.cda) {
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ret = -EFAULT; |
282 |
} 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; |
286 |
} else {
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len = hw_len; |
288 |
/* XXX config space endianness */
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memcpy(dev->vdev->config, config, len); |
290 |
cpu_physical_memory_unmap(config, hw_len, 0, hw_len);
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virtio_bus_set_vdev_config(&dev->bus, dev->vdev->config); |
292 |
sch->curr_status.scsw.count = ccw.count - len; |
293 |
ret = 0;
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} |
295 |
} |
296 |
break;
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297 |
case CCW_CMD_WRITE_STATUS:
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if (check_len) {
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299 |
if (ccw.count != sizeof(status)) { |
300 |
ret = -EINVAL; |
301 |
break;
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302 |
} |
303 |
} else if (ccw.count < sizeof(status)) { |
304 |
/* Can't execute command. */
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305 |
ret = -EINVAL; |
306 |
break;
|
307 |
} |
308 |
if (!ccw.cda) {
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ret = -EFAULT; |
310 |
} else {
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311 |
status = ldub_phys(ccw.cda); |
312 |
virtio_set_status(dev->vdev, status); |
313 |
if (dev->vdev->status == 0) { |
314 |
virtio_reset(dev->vdev); |
315 |
} |
316 |
sch->curr_status.scsw.count = ccw.count - sizeof(status);
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317 |
ret = 0;
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318 |
} |
319 |
break;
|
320 |
case CCW_CMD_SET_IND:
|
321 |
if (check_len) {
|
322 |
if (ccw.count != sizeof(indicators)) { |
323 |
ret = -EINVAL; |
324 |
break;
|
325 |
} |
326 |
} else if (ccw.count < sizeof(indicators)) { |
327 |
/* Can't execute command. */
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328 |
ret = -EINVAL; |
329 |
break;
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330 |
} |
331 |
indicators = ldq_phys(ccw.cda); |
332 |
if (!indicators) {
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333 |
ret = -EFAULT; |
334 |
} else {
|
335 |
dev->indicators = indicators; |
336 |
sch->curr_status.scsw.count = ccw.count - sizeof(indicators);
|
337 |
ret = 0;
|
338 |
} |
339 |
break;
|
340 |
case CCW_CMD_SET_CONF_IND:
|
341 |
if (check_len) {
|
342 |
if (ccw.count != sizeof(indicators)) { |
343 |
ret = -EINVAL; |
344 |
break;
|
345 |
} |
346 |
} else if (ccw.count < sizeof(indicators)) { |
347 |
/* Can't execute command. */
|
348 |
ret = -EINVAL; |
349 |
break;
|
350 |
} |
351 |
indicators = ldq_phys(ccw.cda); |
352 |
if (!indicators) {
|
353 |
ret = -EFAULT; |
354 |
} else {
|
355 |
dev->indicators2 = indicators; |
356 |
sch->curr_status.scsw.count = ccw.count - sizeof(indicators);
|
357 |
ret = 0;
|
358 |
} |
359 |
break;
|
360 |
case CCW_CMD_READ_VQ_CONF:
|
361 |
if (check_len) {
|
362 |
if (ccw.count != sizeof(vq_config)) { |
363 |
ret = -EINVAL; |
364 |
break;
|
365 |
} |
366 |
} else if (ccw.count < sizeof(vq_config)) { |
367 |
/* Can't execute command. */
|
368 |
ret = -EINVAL; |
369 |
break;
|
370 |
} |
371 |
if (!ccw.cda) {
|
372 |
ret = -EFAULT; |
373 |
} else {
|
374 |
vq_config.index = lduw_phys(ccw.cda); |
375 |
vq_config.num_max = virtio_queue_get_num(dev->vdev, |
376 |
vq_config.index); |
377 |
stw_phys(ccw.cda + sizeof(vq_config.index), vq_config.num_max);
|
378 |
sch->curr_status.scsw.count = ccw.count - sizeof(vq_config);
|
379 |
ret = 0;
|
380 |
} |
381 |
break;
|
382 |
default:
|
383 |
ret = -ENOSYS; |
384 |
break;
|
385 |
} |
386 |
return ret;
|
387 |
} |
388 |
|
389 |
static int virtio_ccw_device_init(VirtioCcwDevice *dev, VirtIODevice *vdev) |
390 |
{ |
391 |
unsigned int cssid = 0; |
392 |
unsigned int ssid = 0; |
393 |
unsigned int schid; |
394 |
unsigned int devno; |
395 |
bool have_devno = false; |
396 |
bool found = false; |
397 |
SubchDev *sch; |
398 |
int ret;
|
399 |
int num;
|
400 |
DeviceState *parent = DEVICE(dev); |
401 |
|
402 |
sch = g_malloc0(sizeof(SubchDev));
|
403 |
|
404 |
sch->driver_data = dev; |
405 |
dev->sch = sch; |
406 |
|
407 |
dev->vdev = vdev; |
408 |
dev->indicators = 0;
|
409 |
|
410 |
/* Initialize subchannel structure. */
|
411 |
sch->channel_prog = 0x0;
|
412 |
sch->last_cmd_valid = false;
|
413 |
sch->orb = NULL;
|
414 |
/*
|
415 |
* Use a device number if provided. Otherwise, fall back to subchannel
|
416 |
* number.
|
417 |
*/
|
418 |
if (dev->bus_id) {
|
419 |
num = sscanf(dev->bus_id, "%x.%x.%04x", &cssid, &ssid, &devno);
|
420 |
if (num == 3) { |
421 |
if ((cssid > MAX_CSSID) || (ssid > MAX_SSID)) {
|
422 |
ret = -EINVAL; |
423 |
error_report("Invalid cssid or ssid: cssid %x, ssid %x",
|
424 |
cssid, ssid); |
425 |
goto out_err;
|
426 |
} |
427 |
/* Enforce use of virtual cssid. */
|
428 |
if (cssid != VIRTUAL_CSSID) {
|
429 |
ret = -EINVAL; |
430 |
error_report("cssid %x not valid for virtio devices", cssid);
|
431 |
goto out_err;
|
432 |
} |
433 |
if (css_devno_used(cssid, ssid, devno)) {
|
434 |
ret = -EEXIST; |
435 |
error_report("Device %x.%x.%04x already exists", cssid, ssid,
|
436 |
devno); |
437 |
goto out_err;
|
438 |
} |
439 |
sch->cssid = cssid; |
440 |
sch->ssid = ssid; |
441 |
sch->devno = devno; |
442 |
have_devno = true;
|
443 |
} else {
|
444 |
ret = -EINVAL; |
445 |
error_report("Malformed devno parameter '%s'", dev->bus_id);
|
446 |
goto out_err;
|
447 |
} |
448 |
} |
449 |
|
450 |
/* Find the next free id. */
|
451 |
if (have_devno) {
|
452 |
for (schid = 0; schid <= MAX_SCHID; schid++) { |
453 |
if (!css_find_subch(1, cssid, ssid, schid)) { |
454 |
sch->schid = schid; |
455 |
css_subch_assign(cssid, ssid, schid, devno, sch); |
456 |
found = true;
|
457 |
break;
|
458 |
} |
459 |
} |
460 |
if (!found) {
|
461 |
ret = -ENODEV; |
462 |
error_report("No free subchannel found for %x.%x.%04x", cssid, ssid,
|
463 |
devno); |
464 |
goto out_err;
|
465 |
} |
466 |
trace_virtio_ccw_new_device(cssid, ssid, schid, devno, |
467 |
"user-configured");
|
468 |
} else {
|
469 |
cssid = VIRTUAL_CSSID; |
470 |
for (ssid = 0; ssid <= MAX_SSID; ssid++) { |
471 |
for (schid = 0; schid <= MAX_SCHID; schid++) { |
472 |
if (!css_find_subch(1, cssid, ssid, schid)) { |
473 |
sch->cssid = cssid; |
474 |
sch->ssid = ssid; |
475 |
sch->schid = schid; |
476 |
devno = schid; |
477 |
/*
|
478 |
* If the devno is already taken, look further in this
|
479 |
* subchannel set.
|
480 |
*/
|
481 |
while (css_devno_used(cssid, ssid, devno)) {
|
482 |
if (devno == MAX_SCHID) {
|
483 |
devno = 0;
|
484 |
} else if (devno == schid - 1) { |
485 |
ret = -ENODEV; |
486 |
error_report("No free devno found");
|
487 |
goto out_err;
|
488 |
} else {
|
489 |
devno++; |
490 |
} |
491 |
} |
492 |
sch->devno = devno; |
493 |
css_subch_assign(cssid, ssid, schid, devno, sch); |
494 |
found = true;
|
495 |
break;
|
496 |
} |
497 |
} |
498 |
if (found) {
|
499 |
break;
|
500 |
} |
501 |
} |
502 |
if (!found) {
|
503 |
ret = -ENODEV; |
504 |
error_report("Virtual channel subsystem is full!");
|
505 |
goto out_err;
|
506 |
} |
507 |
trace_virtio_ccw_new_device(cssid, ssid, schid, devno, |
508 |
"auto-configured");
|
509 |
} |
510 |
|
511 |
/* Build initial schib. */
|
512 |
css_sch_build_virtual_schib(sch, 0, VIRTIO_CCW_CHPID_TYPE);
|
513 |
|
514 |
sch->ccw_cb = virtio_ccw_cb; |
515 |
|
516 |
/* Build senseid data. */
|
517 |
memset(&sch->id, 0, sizeof(SenseId)); |
518 |
sch->id.reserved = 0xff;
|
519 |
sch->id.cu_type = VIRTIO_CCW_CU_TYPE; |
520 |
sch->id.cu_model = dev->vdev->device_id; |
521 |
|
522 |
/* Only the first 32 feature bits are used. */
|
523 |
dev->host_features[0] = virtio_bus_get_vdev_features(&dev->bus,
|
524 |
dev->host_features[0]);
|
525 |
|
526 |
dev->host_features[0] |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY; |
527 |
dev->host_features[0] |= 0x1 << VIRTIO_F_BAD_FEATURE; |
528 |
|
529 |
css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid, |
530 |
parent->hotplugged, 1);
|
531 |
return 0; |
532 |
|
533 |
out_err:
|
534 |
dev->sch = NULL;
|
535 |
g_free(sch); |
536 |
return ret;
|
537 |
} |
538 |
|
539 |
static int virtio_ccw_exit(VirtioCcwDevice *dev) |
540 |
{ |
541 |
SubchDev *sch = dev->sch; |
542 |
|
543 |
if (sch) {
|
544 |
css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL);
|
545 |
g_free(sch); |
546 |
} |
547 |
dev->indicators = 0;
|
548 |
return 0; |
549 |
} |
550 |
|
551 |
static int virtio_ccw_net_init(VirtioCcwDevice *ccw_dev) |
552 |
{ |
553 |
VirtIONetCcw *dev = VIRTIO_NET_CCW(ccw_dev); |
554 |
DeviceState *vdev = DEVICE(&dev->vdev); |
555 |
|
556 |
virtio_net_set_config_size(&dev->vdev, ccw_dev->host_features[0]);
|
557 |
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); |
558 |
if (qdev_init(vdev) < 0) { |
559 |
return -1; |
560 |
} |
561 |
|
562 |
return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
|
563 |
} |
564 |
|
565 |
static void virtio_ccw_net_instance_init(Object *obj) |
566 |
{ |
567 |
VirtIONetCcw *dev = VIRTIO_NET_CCW(obj); |
568 |
object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_NET); |
569 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
570 |
} |
571 |
|
572 |
static int virtio_ccw_blk_init(VirtioCcwDevice *ccw_dev) |
573 |
{ |
574 |
VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(ccw_dev); |
575 |
DeviceState *vdev = DEVICE(&dev->vdev); |
576 |
virtio_blk_set_conf(vdev, &(dev->blk)); |
577 |
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); |
578 |
if (qdev_init(vdev) < 0) { |
579 |
return -1; |
580 |
} |
581 |
|
582 |
return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
|
583 |
} |
584 |
|
585 |
static void virtio_ccw_blk_instance_init(Object *obj) |
586 |
{ |
587 |
VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(obj); |
588 |
object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_BLK); |
589 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
590 |
} |
591 |
|
592 |
static int virtio_ccw_serial_init(VirtioCcwDevice *ccw_dev) |
593 |
{ |
594 |
VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(ccw_dev); |
595 |
DeviceState *vdev = DEVICE(&dev->vdev); |
596 |
|
597 |
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); |
598 |
if (qdev_init(vdev) < 0) { |
599 |
return -1; |
600 |
} |
601 |
|
602 |
return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
|
603 |
} |
604 |
|
605 |
|
606 |
static void virtio_ccw_serial_instance_init(Object *obj) |
607 |
{ |
608 |
VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(obj); |
609 |
object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_SERIAL); |
610 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
611 |
} |
612 |
|
613 |
static int virtio_ccw_balloon_init(VirtioCcwDevice *ccw_dev) |
614 |
{ |
615 |
VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(ccw_dev); |
616 |
DeviceState *vdev = DEVICE(&dev->vdev); |
617 |
|
618 |
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); |
619 |
if (qdev_init(vdev) < 0) { |
620 |
return -1; |
621 |
} |
622 |
|
623 |
return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
|
624 |
} |
625 |
|
626 |
static void balloon_ccw_stats_get_all(Object *obj, struct Visitor *v, |
627 |
void *opaque, const char *name, |
628 |
Error **errp) |
629 |
{ |
630 |
VirtIOBalloonCcw *dev = opaque; |
631 |
object_property_get(OBJECT(&dev->vdev), v, "guest-stats", errp);
|
632 |
} |
633 |
|
634 |
static void balloon_ccw_stats_get_poll_interval(Object *obj, struct Visitor *v, |
635 |
void *opaque, const char *name, |
636 |
Error **errp) |
637 |
{ |
638 |
VirtIOBalloonCcw *dev = opaque; |
639 |
object_property_get(OBJECT(&dev->vdev), v, "guest-stats-polling-interval",
|
640 |
errp); |
641 |
} |
642 |
|
643 |
static void balloon_ccw_stats_set_poll_interval(Object *obj, struct Visitor *v, |
644 |
void *opaque, const char *name, |
645 |
Error **errp) |
646 |
{ |
647 |
VirtIOBalloonCcw *dev = opaque; |
648 |
object_property_set(OBJECT(&dev->vdev), v, "guest-stats-polling-interval",
|
649 |
errp); |
650 |
} |
651 |
|
652 |
static void virtio_ccw_balloon_instance_init(Object *obj) |
653 |
{ |
654 |
VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(obj); |
655 |
object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_BALLOON); |
656 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
657 |
|
658 |
object_property_add(obj, "guest-stats", "guest statistics", |
659 |
balloon_ccw_stats_get_all, NULL, NULL, dev, NULL); |
660 |
|
661 |
object_property_add(obj, "guest-stats-polling-interval", "int", |
662 |
balloon_ccw_stats_get_poll_interval, |
663 |
balloon_ccw_stats_set_poll_interval, |
664 |
NULL, dev, NULL); |
665 |
} |
666 |
|
667 |
static int virtio_ccw_scsi_init(VirtioCcwDevice *ccw_dev) |
668 |
{ |
669 |
VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(ccw_dev); |
670 |
DeviceState *vdev = DEVICE(&dev->vdev); |
671 |
|
672 |
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); |
673 |
if (qdev_init(vdev) < 0) { |
674 |
return -1; |
675 |
} |
676 |
|
677 |
return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
|
678 |
} |
679 |
|
680 |
static void virtio_ccw_scsi_instance_init(Object *obj) |
681 |
{ |
682 |
VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(obj); |
683 |
object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_SCSI); |
684 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
685 |
} |
686 |
|
687 |
#ifdef CONFIG_VHOST_SCSI
|
688 |
static int vhost_ccw_scsi_init(VirtioCcwDevice *ccw_dev) |
689 |
{ |
690 |
VHostSCSICcw *dev = VHOST_SCSI_CCW(ccw_dev); |
691 |
DeviceState *vdev = DEVICE(&dev->vdev); |
692 |
|
693 |
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); |
694 |
if (qdev_init(vdev) < 0) { |
695 |
return -1; |
696 |
} |
697 |
|
698 |
return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
|
699 |
} |
700 |
|
701 |
static void vhost_ccw_scsi_instance_init(Object *obj) |
702 |
{ |
703 |
VHostSCSICcw *dev = VHOST_SCSI_CCW(obj); |
704 |
object_initialize(OBJECT(&dev->vdev), TYPE_VHOST_SCSI); |
705 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
706 |
} |
707 |
#endif
|
708 |
|
709 |
static int virtio_ccw_rng_init(VirtioCcwDevice *ccw_dev) |
710 |
{ |
711 |
VirtIORNGCcw *dev = VIRTIO_RNG_CCW(ccw_dev); |
712 |
DeviceState *vdev = DEVICE(&dev->vdev); |
713 |
|
714 |
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); |
715 |
if (qdev_init(vdev) < 0) { |
716 |
return -1; |
717 |
} |
718 |
|
719 |
object_property_set_link(OBJECT(dev), |
720 |
OBJECT(dev->vdev.conf.default_backend), "rng",
|
721 |
NULL);
|
722 |
|
723 |
return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
|
724 |
} |
725 |
|
726 |
/* DeviceState to VirtioCcwDevice. Note: used on datapath,
|
727 |
* be careful and test performance if you change this.
|
728 |
*/
|
729 |
static inline VirtioCcwDevice *to_virtio_ccw_dev_fast(DeviceState *d) |
730 |
{ |
731 |
return container_of(d, VirtioCcwDevice, parent_obj);
|
732 |
} |
733 |
|
734 |
static void virtio_ccw_notify(DeviceState *d, uint16_t vector) |
735 |
{ |
736 |
VirtioCcwDevice *dev = to_virtio_ccw_dev_fast(d); |
737 |
SubchDev *sch = dev->sch; |
738 |
uint64_t indicators; |
739 |
|
740 |
if (vector >= 128) { |
741 |
return;
|
742 |
} |
743 |
|
744 |
if (vector < VIRTIO_PCI_QUEUE_MAX) {
|
745 |
if (!dev->indicators) {
|
746 |
return;
|
747 |
} |
748 |
indicators = ldq_phys(dev->indicators); |
749 |
indicators |= 1ULL << vector;
|
750 |
stq_phys(dev->indicators, indicators); |
751 |
} else {
|
752 |
if (!dev->indicators2) {
|
753 |
return;
|
754 |
} |
755 |
vector = 0;
|
756 |
indicators = ldq_phys(dev->indicators2); |
757 |
indicators |= 1ULL << vector;
|
758 |
stq_phys(dev->indicators2, indicators); |
759 |
} |
760 |
|
761 |
css_conditional_io_interrupt(sch); |
762 |
|
763 |
} |
764 |
|
765 |
static unsigned virtio_ccw_get_features(DeviceState *d) |
766 |
{ |
767 |
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); |
768 |
|
769 |
/* Only the first 32 feature bits are used. */
|
770 |
return dev->host_features[0]; |
771 |
} |
772 |
|
773 |
static void virtio_ccw_reset(DeviceState *d) |
774 |
{ |
775 |
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); |
776 |
|
777 |
virtio_reset(dev->vdev); |
778 |
css_reset_sch(dev->sch); |
779 |
} |
780 |
|
781 |
/**************** Virtio-ccw Bus Device Descriptions *******************/
|
782 |
|
783 |
static Property virtio_ccw_net_properties[] = {
|
784 |
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
785 |
DEFINE_VIRTIO_NET_FEATURES(VirtioCcwDevice, host_features[0]),
|
786 |
DEFINE_VIRTIO_NET_PROPERTIES(VirtIONetCcw, vdev.net_conf), |
787 |
DEFINE_NIC_PROPERTIES(VirtIONetCcw, vdev.nic_conf), |
788 |
DEFINE_PROP_END_OF_LIST(), |
789 |
}; |
790 |
|
791 |
static void virtio_ccw_net_class_init(ObjectClass *klass, void *data) |
792 |
{ |
793 |
DeviceClass *dc = DEVICE_CLASS(klass); |
794 |
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); |
795 |
|
796 |
k->init = virtio_ccw_net_init; |
797 |
k->exit = virtio_ccw_exit; |
798 |
dc->reset = virtio_ccw_reset; |
799 |
dc->props = virtio_ccw_net_properties; |
800 |
} |
801 |
|
802 |
static const TypeInfo virtio_ccw_net = { |
803 |
.name = TYPE_VIRTIO_NET_CCW, |
804 |
.parent = TYPE_VIRTIO_CCW_DEVICE, |
805 |
.instance_size = sizeof(VirtIONetCcw),
|
806 |
.instance_init = virtio_ccw_net_instance_init, |
807 |
.class_init = virtio_ccw_net_class_init, |
808 |
}; |
809 |
|
810 |
static Property virtio_ccw_blk_properties[] = {
|
811 |
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
812 |
DEFINE_VIRTIO_BLK_FEATURES(VirtioCcwDevice, host_features[0]),
|
813 |
DEFINE_VIRTIO_BLK_PROPERTIES(VirtIOBlkCcw, blk), |
814 |
DEFINE_PROP_END_OF_LIST(), |
815 |
}; |
816 |
|
817 |
static void virtio_ccw_blk_class_init(ObjectClass *klass, void *data) |
818 |
{ |
819 |
DeviceClass *dc = DEVICE_CLASS(klass); |
820 |
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); |
821 |
|
822 |
k->init = virtio_ccw_blk_init; |
823 |
k->exit = virtio_ccw_exit; |
824 |
dc->reset = virtio_ccw_reset; |
825 |
dc->props = virtio_ccw_blk_properties; |
826 |
} |
827 |
|
828 |
static const TypeInfo virtio_ccw_blk = { |
829 |
.name = TYPE_VIRTIO_BLK_CCW, |
830 |
.parent = TYPE_VIRTIO_CCW_DEVICE, |
831 |
.instance_size = sizeof(VirtIOBlkCcw),
|
832 |
.instance_init = virtio_ccw_blk_instance_init, |
833 |
.class_init = virtio_ccw_blk_class_init, |
834 |
}; |
835 |
|
836 |
static Property virtio_ccw_serial_properties[] = {
|
837 |
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
838 |
DEFINE_VIRTIO_SERIAL_PROPERTIES(VirtioSerialCcw, vdev.serial), |
839 |
DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]),
|
840 |
DEFINE_PROP_END_OF_LIST(), |
841 |
}; |
842 |
|
843 |
static void virtio_ccw_serial_class_init(ObjectClass *klass, void *data) |
844 |
{ |
845 |
DeviceClass *dc = DEVICE_CLASS(klass); |
846 |
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); |
847 |
|
848 |
k->init = virtio_ccw_serial_init; |
849 |
k->exit = virtio_ccw_exit; |
850 |
dc->reset = virtio_ccw_reset; |
851 |
dc->props = virtio_ccw_serial_properties; |
852 |
} |
853 |
|
854 |
static const TypeInfo virtio_ccw_serial = { |
855 |
.name = TYPE_VIRTIO_SERIAL_CCW, |
856 |
.parent = TYPE_VIRTIO_CCW_DEVICE, |
857 |
.instance_size = sizeof(VirtioSerialCcw),
|
858 |
.instance_init = virtio_ccw_serial_instance_init, |
859 |
.class_init = virtio_ccw_serial_class_init, |
860 |
}; |
861 |
|
862 |
static Property virtio_ccw_balloon_properties[] = {
|
863 |
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
864 |
DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]),
|
865 |
DEFINE_PROP_END_OF_LIST(), |
866 |
}; |
867 |
|
868 |
static void virtio_ccw_balloon_class_init(ObjectClass *klass, void *data) |
869 |
{ |
870 |
DeviceClass *dc = DEVICE_CLASS(klass); |
871 |
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); |
872 |
|
873 |
k->init = virtio_ccw_balloon_init; |
874 |
k->exit = virtio_ccw_exit; |
875 |
dc->reset = virtio_ccw_reset; |
876 |
dc->props = virtio_ccw_balloon_properties; |
877 |
} |
878 |
|
879 |
static const TypeInfo virtio_ccw_balloon = { |
880 |
.name = TYPE_VIRTIO_BALLOON_CCW, |
881 |
.parent = TYPE_VIRTIO_CCW_DEVICE, |
882 |
.instance_size = sizeof(VirtIOBalloonCcw),
|
883 |
.instance_init = virtio_ccw_balloon_instance_init, |
884 |
.class_init = virtio_ccw_balloon_class_init, |
885 |
}; |
886 |
|
887 |
static Property virtio_ccw_scsi_properties[] = {
|
888 |
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
889 |
DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOSCSICcw, vdev.parent_obj.conf), |
890 |
DEFINE_VIRTIO_SCSI_FEATURES(VirtioCcwDevice, host_features[0]),
|
891 |
DEFINE_PROP_END_OF_LIST(), |
892 |
}; |
893 |
|
894 |
static void virtio_ccw_scsi_class_init(ObjectClass *klass, void *data) |
895 |
{ |
896 |
DeviceClass *dc = DEVICE_CLASS(klass); |
897 |
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); |
898 |
|
899 |
k->init = virtio_ccw_scsi_init; |
900 |
k->exit = virtio_ccw_exit; |
901 |
dc->reset = virtio_ccw_reset; |
902 |
dc->props = virtio_ccw_scsi_properties; |
903 |
} |
904 |
|
905 |
static const TypeInfo virtio_ccw_scsi = { |
906 |
.name = TYPE_VIRTIO_SCSI_CCW, |
907 |
.parent = TYPE_VIRTIO_CCW_DEVICE, |
908 |
.instance_size = sizeof(VirtIOSCSICcw),
|
909 |
.instance_init = virtio_ccw_scsi_instance_init, |
910 |
.class_init = virtio_ccw_scsi_class_init, |
911 |
}; |
912 |
|
913 |
#ifdef CONFIG_VHOST_SCSI
|
914 |
static Property vhost_ccw_scsi_properties[] = {
|
915 |
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
916 |
DEFINE_VHOST_SCSI_PROPERTIES(VirtIOSCSICcw, vdev.parent_obj.conf), |
917 |
DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]),
|
918 |
DEFINE_PROP_END_OF_LIST(), |
919 |
}; |
920 |
|
921 |
static void vhost_ccw_scsi_class_init(ObjectClass *klass, void *data) |
922 |
{ |
923 |
DeviceClass *dc = DEVICE_CLASS(klass); |
924 |
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); |
925 |
|
926 |
k->init = vhost_ccw_scsi_init; |
927 |
k->exit = virtio_ccw_exit; |
928 |
dc->reset = virtio_ccw_reset; |
929 |
dc->props = vhost_ccw_scsi_properties; |
930 |
} |
931 |
|
932 |
static const TypeInfo vhost_ccw_scsi = { |
933 |
.name = TYPE_VHOST_SCSI_CCW, |
934 |
.parent = TYPE_VIRTIO_CCW_DEVICE, |
935 |
.instance_size = sizeof(VirtIOSCSICcw),
|
936 |
.instance_init = vhost_ccw_scsi_instance_init, |
937 |
.class_init = vhost_ccw_scsi_class_init, |
938 |
}; |
939 |
#endif
|
940 |
|
941 |
static void virtio_ccw_rng_instance_init(Object *obj) |
942 |
{ |
943 |
VirtIORNGCcw *dev = VIRTIO_RNG_CCW(obj); |
944 |
object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_RNG); |
945 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
946 |
object_property_add_link(obj, "rng", TYPE_RNG_BACKEND,
|
947 |
(Object **)&dev->vdev.conf.rng, NULL);
|
948 |
} |
949 |
|
950 |
static Property virtio_ccw_rng_properties[] = {
|
951 |
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
952 |
DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]),
|
953 |
DEFINE_VIRTIO_RNG_PROPERTIES(VirtIORNGCcw, vdev.conf), |
954 |
DEFINE_PROP_END_OF_LIST(), |
955 |
}; |
956 |
|
957 |
static void virtio_ccw_rng_class_init(ObjectClass *klass, void *data) |
958 |
{ |
959 |
DeviceClass *dc = DEVICE_CLASS(klass); |
960 |
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); |
961 |
|
962 |
k->init = virtio_ccw_rng_init; |
963 |
k->exit = virtio_ccw_exit; |
964 |
dc->reset = virtio_ccw_reset; |
965 |
dc->props = virtio_ccw_rng_properties; |
966 |
} |
967 |
|
968 |
static const TypeInfo virtio_ccw_rng = { |
969 |
.name = TYPE_VIRTIO_RNG_CCW, |
970 |
.parent = TYPE_VIRTIO_CCW_DEVICE, |
971 |
.instance_size = sizeof(VirtIORNGCcw),
|
972 |
.instance_init = virtio_ccw_rng_instance_init, |
973 |
.class_init = virtio_ccw_rng_class_init, |
974 |
}; |
975 |
|
976 |
static int virtio_ccw_busdev_init(DeviceState *dev) |
977 |
{ |
978 |
VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; |
979 |
VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev); |
980 |
|
981 |
virtio_ccw_bus_new(&_dev->bus, _dev); |
982 |
|
983 |
return _info->init(_dev);
|
984 |
} |
985 |
|
986 |
static int virtio_ccw_busdev_exit(DeviceState *dev) |
987 |
{ |
988 |
VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; |
989 |
VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev); |
990 |
|
991 |
return _info->exit(_dev);
|
992 |
} |
993 |
|
994 |
static int virtio_ccw_busdev_unplug(DeviceState *dev) |
995 |
{ |
996 |
VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; |
997 |
SubchDev *sch = _dev->sch; |
998 |
|
999 |
/*
|
1000 |
* We should arrive here only for device_del, since we don't support
|
1001 |
* direct hot(un)plug of channels, but only through virtio.
|
1002 |
*/
|
1003 |
assert(sch != NULL);
|
1004 |
/* Subchannel is now disabled and no longer valid. */
|
1005 |
sch->curr_status.pmcw.flags &= ~(PMCW_FLAGS_MASK_ENA | |
1006 |
PMCW_FLAGS_MASK_DNV); |
1007 |
|
1008 |
css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid, 1, 0); |
1009 |
|
1010 |
qdev_free(dev); |
1011 |
return 0; |
1012 |
} |
1013 |
|
1014 |
static void virtio_ccw_device_class_init(ObjectClass *klass, void *data) |
1015 |
{ |
1016 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1017 |
|
1018 |
dc->init = virtio_ccw_busdev_init; |
1019 |
dc->exit = virtio_ccw_busdev_exit; |
1020 |
dc->unplug = virtio_ccw_busdev_unplug; |
1021 |
dc->bus_type = TYPE_VIRTUAL_CSS_BUS; |
1022 |
|
1023 |
} |
1024 |
|
1025 |
static const TypeInfo virtio_ccw_device_info = { |
1026 |
.name = TYPE_VIRTIO_CCW_DEVICE, |
1027 |
.parent = TYPE_DEVICE, |
1028 |
.instance_size = sizeof(VirtioCcwDevice),
|
1029 |
.class_init = virtio_ccw_device_class_init, |
1030 |
.class_size = sizeof(VirtIOCCWDeviceClass),
|
1031 |
.abstract = true,
|
1032 |
}; |
1033 |
|
1034 |
/***************** Virtual-css Bus Bridge Device ********************/
|
1035 |
/* Only required to have the virtio bus as child in the system bus */
|
1036 |
|
1037 |
static int virtual_css_bridge_init(SysBusDevice *dev) |
1038 |
{ |
1039 |
/* nothing */
|
1040 |
return 0; |
1041 |
} |
1042 |
|
1043 |
static void virtual_css_bridge_class_init(ObjectClass *klass, void *data) |
1044 |
{ |
1045 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1046 |
SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); |
1047 |
|
1048 |
k->init = virtual_css_bridge_init; |
1049 |
dc->no_user = 1;
|
1050 |
} |
1051 |
|
1052 |
static const TypeInfo virtual_css_bridge_info = { |
1053 |
.name = "virtual-css-bridge",
|
1054 |
.parent = TYPE_SYS_BUS_DEVICE, |
1055 |
.instance_size = sizeof(SysBusDevice),
|
1056 |
.class_init = virtual_css_bridge_class_init, |
1057 |
}; |
1058 |
|
1059 |
/* virtio-ccw-bus */
|
1060 |
|
1061 |
static void virtio_ccw_bus_new(VirtioBusState *bus, VirtioCcwDevice *dev) |
1062 |
{ |
1063 |
DeviceState *qdev = DEVICE(dev); |
1064 |
BusState *qbus; |
1065 |
char virtio_bus_name[] = "virtio-bus"; |
1066 |
|
1067 |
qbus_create_inplace((BusState *)bus, TYPE_VIRTIO_CCW_BUS, qdev, |
1068 |
virtio_bus_name); |
1069 |
qbus = BUS(bus); |
1070 |
qbus->allow_hotplug = 1;
|
1071 |
} |
1072 |
|
1073 |
static void virtio_ccw_bus_class_init(ObjectClass *klass, void *data) |
1074 |
{ |
1075 |
VirtioBusClass *k = VIRTIO_BUS_CLASS(klass); |
1076 |
BusClass *bus_class = BUS_CLASS(klass); |
1077 |
|
1078 |
bus_class->max_dev = 1;
|
1079 |
k->notify = virtio_ccw_notify; |
1080 |
k->get_features = virtio_ccw_get_features; |
1081 |
} |
1082 |
|
1083 |
static const TypeInfo virtio_ccw_bus_info = { |
1084 |
.name = TYPE_VIRTIO_CCW_BUS, |
1085 |
.parent = TYPE_VIRTIO_BUS, |
1086 |
.instance_size = sizeof(VirtioCcwBusState),
|
1087 |
.class_init = virtio_ccw_bus_class_init, |
1088 |
}; |
1089 |
|
1090 |
static void virtio_ccw_register(void) |
1091 |
{ |
1092 |
type_register_static(&virtio_ccw_bus_info); |
1093 |
type_register_static(&virtual_css_bus_info); |
1094 |
type_register_static(&virtio_ccw_device_info); |
1095 |
type_register_static(&virtio_ccw_serial); |
1096 |
type_register_static(&virtio_ccw_blk); |
1097 |
type_register_static(&virtio_ccw_net); |
1098 |
type_register_static(&virtio_ccw_balloon); |
1099 |
type_register_static(&virtio_ccw_scsi); |
1100 |
#ifdef CONFIG_VHOST_SCSI
|
1101 |
type_register_static(&vhost_ccw_scsi); |
1102 |
#endif
|
1103 |
type_register_static(&virtio_ccw_rng); |
1104 |
type_register_static(&virtual_css_bridge_info); |
1105 |
} |
1106 |
|
1107 |
type_init(virtio_ccw_register) |