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authorRajithaY <rajithax.yerrumsetty@intel.com>2017-04-25 03:31:15 -0700
committerRajitha Yerrumchetty <rajithax.yerrumsetty@intel.com>2017-05-22 06:48:08 +0000
commitbb756eebdac6fd24e8919e2c43f7d2c8c4091f59 (patch)
treeca11e03542edf2d8f631efeca5e1626d211107e3 /qemu/hw/s390x/virtio-ccw.c
parenta14b48d18a9ed03ec191cf16b162206998a895ce (diff)
Adding qemu as a submodule of KVMFORNFV
This Patch includes the changes to add qemu as a submodule to kvmfornfv repo and make use of the updated latest qemu for the execution of all testcase Change-Id: I1280af507a857675c7f81d30c95255635667bdd7 Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>
Diffstat (limited to 'qemu/hw/s390x/virtio-ccw.c')
-rw-r--r--qemu/hw/s390x/virtio-ccw.c1928
1 files changed, 0 insertions, 1928 deletions
diff --git a/qemu/hw/s390x/virtio-ccw.c b/qemu/hw/s390x/virtio-ccw.c
deleted file mode 100644
index d51642db0..000000000
--- a/qemu/hw/s390x/virtio-ccw.c
+++ /dev/null
@@ -1,1928 +0,0 @@
-/*
- * virtio ccw target implementation
- *
- * Copyright 2012,2015 IBM Corp.
- * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
- * Pierre Morel <pmorel@linux.vnet.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.
- */
-
-#include "qemu/osdep.h"
-#include "qapi/error.h"
-#include "hw/hw.h"
-#include "sysemu/block-backend.h"
-#include "sysemu/blockdev.h"
-#include "sysemu/sysemu.h"
-#include "net/net.h"
-#include "hw/virtio/virtio.h"
-#include "hw/virtio/virtio-serial.h"
-#include "hw/virtio/virtio-net.h"
-#include "hw/sysbus.h"
-#include "qemu/bitops.h"
-#include "qemu/error-report.h"
-#include "hw/virtio/virtio-access.h"
-#include "hw/virtio/virtio-bus.h"
-#include "hw/s390x/adapter.h"
-#include "hw/s390x/s390_flic.h"
-
-#include "ioinst.h"
-#include "css.h"
-#include "virtio-ccw.h"
-#include "trace.h"
-
-static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size,
- VirtioCcwDevice *dev);
-
-static void virtual_css_bus_reset(BusState *qbus)
-{
- /* This should actually be modelled via the generic css */
- css_reset();
-}
-
-
-static void virtual_css_bus_class_init(ObjectClass *klass, void *data)
-{
- BusClass *k = BUS_CLASS(klass);
-
- k->reset = virtual_css_bus_reset;
-}
-
-static const TypeInfo virtual_css_bus_info = {
- .name = TYPE_VIRTUAL_CSS_BUS,
- .parent = TYPE_BUS,
- .instance_size = sizeof(VirtualCssBus),
- .class_init = virtual_css_bus_class_init,
-};
-
-VirtIODevice *virtio_ccw_get_vdev(SubchDev *sch)
-{
- VirtIODevice *vdev = NULL;
- VirtioCcwDevice *dev = sch->driver_data;
-
- if (dev) {
- vdev = virtio_bus_get_device(&dev->bus);
- }
- return vdev;
-}
-
-static int virtio_ccw_set_guest2host_notifier(VirtioCcwDevice *dev, int n,
- bool assign, bool set_handler)
-{
- VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
- VirtQueue *vq = virtio_get_queue(vdev, n);
- EventNotifier *notifier = virtio_queue_get_host_notifier(vq);
- int r = 0;
- SubchDev *sch = dev->sch;
- uint32_t sch_id = (css_build_subchannel_id(sch) << 16) | sch->schid;
-
- if (assign) {
- r = event_notifier_init(notifier, 1);
- if (r < 0) {
- error_report("%s: unable to init event notifier: %d", __func__, r);
- return r;
- }
- virtio_queue_set_host_notifier_fd_handler(vq, true, set_handler);
- r = s390_assign_subch_ioeventfd(notifier, sch_id, n, assign);
- if (r < 0) {
- error_report("%s: unable to assign ioeventfd: %d", __func__, r);
- virtio_queue_set_host_notifier_fd_handler(vq, false, false);
- event_notifier_cleanup(notifier);
- return r;
- }
- } else {
- virtio_queue_set_host_notifier_fd_handler(vq, false, false);
- s390_assign_subch_ioeventfd(notifier, sch_id, n, assign);
- event_notifier_cleanup(notifier);
- }
- return r;
-}
-
-static void virtio_ccw_start_ioeventfd(VirtioCcwDevice *dev)
-{
- VirtIODevice *vdev;
- int n, r;
-
- if (!(dev->flags & VIRTIO_CCW_FLAG_USE_IOEVENTFD) ||
- dev->ioeventfd_disabled ||
- dev->ioeventfd_started) {
- return;
- }
- vdev = virtio_bus_get_device(&dev->bus);
- for (n = 0; n < VIRTIO_CCW_QUEUE_MAX; n++) {
- if (!virtio_queue_get_num(vdev, n)) {
- continue;
- }
- r = virtio_ccw_set_guest2host_notifier(dev, n, true, true);
- if (r < 0) {
- goto assign_error;
- }
- }
- dev->ioeventfd_started = true;
- return;
-
- assign_error:
- while (--n >= 0) {
- if (!virtio_queue_get_num(vdev, n)) {
- continue;
- }
- r = virtio_ccw_set_guest2host_notifier(dev, n, false, false);
- assert(r >= 0);
- }
- dev->ioeventfd_started = false;
- /* Disable ioeventfd for this device. */
- dev->flags &= ~VIRTIO_CCW_FLAG_USE_IOEVENTFD;
- error_report("%s: failed. Fallback to userspace (slower).", __func__);
-}
-
-static void virtio_ccw_stop_ioeventfd(VirtioCcwDevice *dev)
-{
- VirtIODevice *vdev;
- int n, r;
-
- if (!dev->ioeventfd_started) {
- return;
- }
- vdev = virtio_bus_get_device(&dev->bus);
- for (n = 0; n < VIRTIO_CCW_QUEUE_MAX; n++) {
- if (!virtio_queue_get_num(vdev, n)) {
- continue;
- }
- r = virtio_ccw_set_guest2host_notifier(dev, n, false, false);
- assert(r >= 0);
- }
- dev->ioeventfd_started = false;
-}
-
-VirtualCssBus *virtual_css_bus_init(void)
-{
- VirtualCssBus *cbus;
- BusState *bus;
- DeviceState *dev;
-
- /* Create bridge device */
- dev = qdev_create(NULL, "virtual-css-bridge");
- qdev_init_nofail(dev);
-
- /* Create bus on bridge device */
- bus = qbus_create(TYPE_VIRTUAL_CSS_BUS, dev, "virtual-css");
- cbus = VIRTUAL_CSS_BUS(bus);
-
- /* Enable hotplugging */
- qbus_set_hotplug_handler(bus, dev, &error_abort);
-
- return cbus;
-}
-
-/* Communication blocks used by several channel commands. */
-typedef struct VqInfoBlockLegacy {
- uint64_t queue;
- uint32_t align;
- uint16_t index;
- uint16_t num;
-} QEMU_PACKED VqInfoBlockLegacy;
-
-typedef struct VqInfoBlock {
- uint64_t desc;
- uint32_t res0;
- uint16_t index;
- uint16_t num;
- uint64_t avail;
- uint64_t used;
-} QEMU_PACKED VqInfoBlock;
-
-typedef struct VqConfigBlock {
- uint16_t index;
- uint16_t num_max;
-} QEMU_PACKED VqConfigBlock;
-
-typedef struct VirtioFeatDesc {
- uint32_t features;
- uint8_t index;
-} QEMU_PACKED VirtioFeatDesc;
-
-typedef struct VirtioThinintInfo {
- hwaddr summary_indicator;
- hwaddr device_indicator;
- uint64_t ind_bit;
- uint8_t isc;
-} QEMU_PACKED VirtioThinintInfo;
-
-typedef struct VirtioRevInfo {
- uint16_t revision;
- uint16_t length;
- uint8_t data[0];
-} QEMU_PACKED VirtioRevInfo;
-
-/* Specify where the virtqueues for the subchannel are in guest memory. */
-static int virtio_ccw_set_vqs(SubchDev *sch, VqInfoBlock *info,
- VqInfoBlockLegacy *linfo)
-{
- VirtIODevice *vdev = virtio_ccw_get_vdev(sch);
- uint16_t index = info ? info->index : linfo->index;
- uint16_t num = info ? info->num : linfo->num;
- uint64_t desc = info ? info->desc : linfo->queue;
-
- if (index >= VIRTIO_CCW_QUEUE_MAX) {
- return -EINVAL;
- }
-
- /* Current code in virtio.c relies on 4K alignment. */
- if (linfo && desc && (linfo->align != 4096)) {
- return -EINVAL;
- }
-
- if (!vdev) {
- return -EINVAL;
- }
-
- if (info) {
- virtio_queue_set_rings(vdev, index, desc, info->avail, info->used);
- } else {
- virtio_queue_set_addr(vdev, index, desc);
- }
- if (!desc) {
- virtio_queue_set_vector(vdev, index, VIRTIO_NO_VECTOR);
- } else {
- if (info) {
- /* virtio-1 allows changing the ring size. */
- if (virtio_queue_get_num(vdev, index) < num) {
- /* Fail if we exceed the maximum number. */
- return -EINVAL;
- }
- virtio_queue_set_num(vdev, index, num);
- } else if (virtio_queue_get_num(vdev, index) > num) {
- /* Fail if we don't have a big enough queue. */
- return -EINVAL;
- }
- /* We ignore possible increased num for legacy for compatibility. */
- virtio_queue_set_vector(vdev, index, index);
- }
- /* tell notify handler in case of config change */
- vdev->config_vector = VIRTIO_CCW_QUEUE_MAX;
- return 0;
-}
-
-static void virtio_ccw_reset_virtio(VirtioCcwDevice *dev, VirtIODevice *vdev)
-{
- virtio_ccw_stop_ioeventfd(dev);
- virtio_reset(vdev);
- if (dev->indicators) {
- release_indicator(&dev->routes.adapter, dev->indicators);
- dev->indicators = NULL;
- }
- if (dev->indicators2) {
- release_indicator(&dev->routes.adapter, dev->indicators2);
- dev->indicators2 = NULL;
- }
- if (dev->summary_indicator) {
- release_indicator(&dev->routes.adapter, dev->summary_indicator);
- dev->summary_indicator = NULL;
- }
- dev->sch->thinint_active = false;
-}
-
-static int virtio_ccw_handle_set_vq(SubchDev *sch, CCW1 ccw, bool check_len,
- bool is_legacy)
-{
- int ret;
- VqInfoBlock info;
- VqInfoBlockLegacy linfo;
- size_t info_len = is_legacy ? sizeof(linfo) : sizeof(info);
-
- if (check_len) {
- if (ccw.count != info_len) {
- return -EINVAL;
- }
- } else if (ccw.count < info_len) {
- /* Can't execute command. */
- return -EINVAL;
- }
- if (!ccw.cda) {
- return -EFAULT;
- }
- if (is_legacy) {
- linfo.queue = address_space_ldq_be(&address_space_memory, ccw.cda,
- MEMTXATTRS_UNSPECIFIED, NULL);
- linfo.align = address_space_ldl_be(&address_space_memory,
- ccw.cda + sizeof(linfo.queue),
- MEMTXATTRS_UNSPECIFIED,
- NULL);
- linfo.index = address_space_lduw_be(&address_space_memory,
- ccw.cda + sizeof(linfo.queue)
- + sizeof(linfo.align),
- MEMTXATTRS_UNSPECIFIED,
- NULL);
- linfo.num = address_space_lduw_be(&address_space_memory,
- ccw.cda + sizeof(linfo.queue)
- + sizeof(linfo.align)
- + sizeof(linfo.index),
- MEMTXATTRS_UNSPECIFIED,
- NULL);
- ret = virtio_ccw_set_vqs(sch, NULL, &linfo);
- } else {
- info.desc = address_space_ldq_be(&address_space_memory, ccw.cda,
- MEMTXATTRS_UNSPECIFIED, NULL);
- info.index = address_space_lduw_be(&address_space_memory,
- ccw.cda + sizeof(info.desc)
- + sizeof(info.res0),
- MEMTXATTRS_UNSPECIFIED, NULL);
- info.num = address_space_lduw_be(&address_space_memory,
- ccw.cda + sizeof(info.desc)
- + sizeof(info.res0)
- + sizeof(info.index),
- MEMTXATTRS_UNSPECIFIED, NULL);
- info.avail = address_space_ldq_be(&address_space_memory,
- ccw.cda + sizeof(info.desc)
- + sizeof(info.res0)
- + sizeof(info.index)
- + sizeof(info.num),
- MEMTXATTRS_UNSPECIFIED, NULL);
- info.used = address_space_ldq_be(&address_space_memory,
- ccw.cda + sizeof(info.desc)
- + sizeof(info.res0)
- + sizeof(info.index)
- + sizeof(info.num)
- + sizeof(info.avail),
- MEMTXATTRS_UNSPECIFIED, NULL);
- ret = virtio_ccw_set_vqs(sch, &info, NULL);
- }
- sch->curr_status.scsw.count = 0;
- return ret;
-}
-
-static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
-{
- int ret;
- VirtioRevInfo revinfo;
- uint8_t status;
- VirtioFeatDesc features;
- void *config;
- hwaddr indicators;
- VqConfigBlock vq_config;
- VirtioCcwDevice *dev = sch->driver_data;
- VirtIODevice *vdev = virtio_ccw_get_vdev(sch);
- bool check_len;
- int len;
- hwaddr hw_len;
- VirtioThinintInfo *thinint;
-
- if (!dev) {
- return -EINVAL;
- }
-
- trace_virtio_ccw_interpret_ccw(sch->cssid, sch->ssid, sch->schid,
- ccw.cmd_code);
- check_len = !((ccw.flags & CCW_FLAG_SLI) && !(ccw.flags & CCW_FLAG_DC));
-
- /* Look at the command. */
- switch (ccw.cmd_code) {
- case CCW_CMD_SET_VQ:
- ret = virtio_ccw_handle_set_vq(sch, ccw, check_len, dev->revision < 1);
- break;
- case CCW_CMD_VDEV_RESET:
- virtio_ccw_reset_virtio(dev, vdev);
- ret = 0;
- break;
- case CCW_CMD_READ_FEAT:
- if (check_len) {
- if (ccw.count != sizeof(features)) {
- ret = -EINVAL;
- break;
- }
- } else if (ccw.count < sizeof(features)) {
- /* Can't execute command. */
- ret = -EINVAL;
- break;
- }
- if (!ccw.cda) {
- ret = -EFAULT;
- } else {
- features.index = address_space_ldub(&address_space_memory,
- ccw.cda
- + sizeof(features.features),
- MEMTXATTRS_UNSPECIFIED,
- NULL);
- if (features.index == 0) {
- if (dev->revision >= 1) {
- /* Don't offer legacy features for modern devices. */
- features.features = (uint32_t)
- (vdev->host_features & ~VIRTIO_LEGACY_FEATURES);
- } else {
- features.features = (uint32_t)vdev->host_features;
- }
- } else if ((features.index == 1) && (dev->revision >= 1)) {
- /*
- * Only offer feature bits beyond 31 if the guest has
- * negotiated at least revision 1.
- */
- features.features = (uint32_t)(vdev->host_features >> 32);
- } else {
- /* Return zeroes if the guest supports more feature bits. */
- features.features = 0;
- }
- address_space_stl_le(&address_space_memory, ccw.cda,
- features.features, MEMTXATTRS_UNSPECIFIED,
- NULL);
- sch->curr_status.scsw.count = ccw.count - sizeof(features);
- ret = 0;
- }
- break;
- case CCW_CMD_WRITE_FEAT:
- if (check_len) {
- if (ccw.count != sizeof(features)) {
- ret = -EINVAL;
- break;
- }
- } else if (ccw.count < sizeof(features)) {
- /* Can't execute command. */
- ret = -EINVAL;
- break;
- }
- if (!ccw.cda) {
- ret = -EFAULT;
- } else {
- features.index = address_space_ldub(&address_space_memory,
- ccw.cda
- + sizeof(features.features),
- MEMTXATTRS_UNSPECIFIED,
- NULL);
- features.features = address_space_ldl_le(&address_space_memory,
- ccw.cda,
- MEMTXATTRS_UNSPECIFIED,
- NULL);
- if (features.index == 0) {
- virtio_set_features(vdev,
- (vdev->guest_features & 0xffffffff00000000ULL) |
- features.features);
- } else if ((features.index == 1) && (dev->revision >= 1)) {
- /*
- * If the guest did not negotiate at least revision 1,
- * we did not offer it any feature bits beyond 31. Such a
- * guest passing us any bit here is therefore buggy.
- */
- virtio_set_features(vdev,
- (vdev->guest_features & 0x00000000ffffffffULL) |
- ((uint64_t)features.features << 32));
- } else {
- /*
- * If the guest supports more feature bits, assert that it
- * passes us zeroes for those we don't support.
- */
- if (features.features) {
- fprintf(stderr, "Guest bug: features[%i]=%x (expected 0)\n",
- features.index, features.features);
- /* XXX: do a unit check here? */
- }
- }
- sch->curr_status.scsw.count = ccw.count - sizeof(features);
- ret = 0;
- }
- break;
- case CCW_CMD_READ_CONF:
- if (check_len) {
- if (ccw.count > vdev->config_len) {
- ret = -EINVAL;
- break;
- }
- }
- len = MIN(ccw.count, vdev->config_len);
- if (!ccw.cda) {
- ret = -EFAULT;
- } else {
- virtio_bus_get_vdev_config(&dev->bus, vdev->config);
- /* XXX config space endianness */
- cpu_physical_memory_write(ccw.cda, vdev->config, len);
- sch->curr_status.scsw.count = ccw.count - len;
- ret = 0;
- }
- break;
- case CCW_CMD_WRITE_CONF:
- if (check_len) {
- if (ccw.count > vdev->config_len) {
- ret = -EINVAL;
- break;
- }
- }
- len = MIN(ccw.count, vdev->config_len);
- hw_len = len;
- if (!ccw.cda) {
- ret = -EFAULT;
- } else {
- config = cpu_physical_memory_map(ccw.cda, &hw_len, 0);
- if (!config) {
- ret = -EFAULT;
- } else {
- len = hw_len;
- /* XXX config space endianness */
- memcpy(vdev->config, config, len);
- cpu_physical_memory_unmap(config, hw_len, 0, hw_len);
- virtio_bus_set_vdev_config(&dev->bus, vdev->config);
- sch->curr_status.scsw.count = ccw.count - len;
- ret = 0;
- }
- }
- break;
- case CCW_CMD_WRITE_STATUS:
- if (check_len) {
- if (ccw.count != sizeof(status)) {
- ret = -EINVAL;
- break;
- }
- } else if (ccw.count < sizeof(status)) {
- /* Can't execute command. */
- ret = -EINVAL;
- break;
- }
- if (!ccw.cda) {
- ret = -EFAULT;
- } else {
- status = address_space_ldub(&address_space_memory, ccw.cda,
- MEMTXATTRS_UNSPECIFIED, NULL);
- if (!(status & VIRTIO_CONFIG_S_DRIVER_OK)) {
- virtio_ccw_stop_ioeventfd(dev);
- }
- if (virtio_set_status(vdev, status) == 0) {
- if (vdev->status == 0) {
- virtio_ccw_reset_virtio(dev, vdev);
- }
- if (status & VIRTIO_CONFIG_S_DRIVER_OK) {
- virtio_ccw_start_ioeventfd(dev);
- }
- sch->curr_status.scsw.count = ccw.count - sizeof(status);
- ret = 0;
- } else {
- /* Trigger a command reject. */
- ret = -ENOSYS;
- }
- }
- break;
- case CCW_CMD_SET_IND:
- if (check_len) {
- if (ccw.count != sizeof(indicators)) {
- ret = -EINVAL;
- break;
- }
- } else if (ccw.count < sizeof(indicators)) {
- /* Can't execute command. */
- ret = -EINVAL;
- break;
- }
- if (sch->thinint_active) {
- /* Trigger a command reject. */
- ret = -ENOSYS;
- break;
- }
- if (!ccw.cda) {
- ret = -EFAULT;
- } else {
- indicators = address_space_ldq_be(&address_space_memory, ccw.cda,
- MEMTXATTRS_UNSPECIFIED, NULL);
- dev->indicators = get_indicator(indicators, sizeof(uint64_t));
- sch->curr_status.scsw.count = ccw.count - sizeof(indicators);
- ret = 0;
- }
- break;
- case CCW_CMD_SET_CONF_IND:
- if (check_len) {
- if (ccw.count != sizeof(indicators)) {
- ret = -EINVAL;
- break;
- }
- } else if (ccw.count < sizeof(indicators)) {
- /* Can't execute command. */
- ret = -EINVAL;
- break;
- }
- if (!ccw.cda) {
- ret = -EFAULT;
- } else {
- indicators = address_space_ldq_be(&address_space_memory, ccw.cda,
- MEMTXATTRS_UNSPECIFIED, NULL);
- dev->indicators2 = get_indicator(indicators, sizeof(uint64_t));
- sch->curr_status.scsw.count = ccw.count - sizeof(indicators);
- ret = 0;
- }
- break;
- case CCW_CMD_READ_VQ_CONF:
- if (check_len) {
- if (ccw.count != sizeof(vq_config)) {
- ret = -EINVAL;
- break;
- }
- } else if (ccw.count < sizeof(vq_config)) {
- /* Can't execute command. */
- ret = -EINVAL;
- break;
- }
- if (!ccw.cda) {
- ret = -EFAULT;
- } else {
- vq_config.index = address_space_lduw_be(&address_space_memory,
- ccw.cda,
- MEMTXATTRS_UNSPECIFIED,
- NULL);
- if (vq_config.index >= VIRTIO_CCW_QUEUE_MAX) {
- ret = -EINVAL;
- break;
- }
- vq_config.num_max = virtio_queue_get_num(vdev,
- vq_config.index);
- address_space_stw_be(&address_space_memory,
- ccw.cda + sizeof(vq_config.index),
- vq_config.num_max,
- MEMTXATTRS_UNSPECIFIED,
- NULL);
- sch->curr_status.scsw.count = ccw.count - sizeof(vq_config);
- ret = 0;
- }
- break;
- case CCW_CMD_SET_IND_ADAPTER:
- if (check_len) {
- if (ccw.count != sizeof(*thinint)) {
- ret = -EINVAL;
- break;
- }
- } else if (ccw.count < sizeof(*thinint)) {
- /* Can't execute command. */
- ret = -EINVAL;
- break;
- }
- len = sizeof(*thinint);
- hw_len = len;
- if (!ccw.cda) {
- ret = -EFAULT;
- } else if (dev->indicators && !sch->thinint_active) {
- /* Trigger a command reject. */
- ret = -ENOSYS;
- } else {
- thinint = cpu_physical_memory_map(ccw.cda, &hw_len, 0);
- if (!thinint) {
- ret = -EFAULT;
- } else {
- uint64_t ind_bit = ldq_be_p(&thinint->ind_bit);
-
- len = hw_len;
- dev->summary_indicator =
- get_indicator(ldq_be_p(&thinint->summary_indicator),
- sizeof(uint8_t));
- dev->indicators =
- get_indicator(ldq_be_p(&thinint->device_indicator),
- ind_bit / 8 + 1);
- dev->thinint_isc = thinint->isc;
- dev->routes.adapter.ind_offset = ind_bit;
- dev->routes.adapter.summary_offset = 7;
- cpu_physical_memory_unmap(thinint, hw_len, 0, hw_len);
- ret = css_register_io_adapter(CSS_IO_ADAPTER_VIRTIO,
- dev->thinint_isc, true, false,
- &dev->routes.adapter.adapter_id);
- assert(ret == 0);
- sch->thinint_active = ((dev->indicators != NULL) &&
- (dev->summary_indicator != NULL));
- sch->curr_status.scsw.count = ccw.count - len;
- ret = 0;
- }
- }
- break;
- case CCW_CMD_SET_VIRTIO_REV:
- len = sizeof(revinfo);
- if (ccw.count < len) {
- ret = -EINVAL;
- break;
- }
- if (!ccw.cda) {
- ret = -EFAULT;
- break;
- }
- revinfo.revision =
- address_space_lduw_be(&address_space_memory, ccw.cda,
- MEMTXATTRS_UNSPECIFIED, NULL);
- revinfo.length =
- address_space_lduw_be(&address_space_memory,
- ccw.cda + sizeof(revinfo.revision),
- MEMTXATTRS_UNSPECIFIED, NULL);
- if (ccw.count < len + revinfo.length ||
- (check_len && ccw.count > len + revinfo.length)) {
- ret = -EINVAL;
- break;
- }
- /*
- * Once we start to support revisions with additional data, we'll
- * need to fetch it here. Nothing to do for now, though.
- */
- if (dev->revision >= 0 ||
- revinfo.revision > virtio_ccw_rev_max(dev)) {
- ret = -ENOSYS;
- break;
- }
- ret = 0;
- dev->revision = revinfo.revision;
- break;
- default:
- ret = -ENOSYS;
- break;
- }
- return ret;
-}
-
-static void virtio_sch_disable_cb(SubchDev *sch)
-{
- VirtioCcwDevice *dev = sch->driver_data;
-
- dev->revision = -1;
-}
-
-static void virtio_ccw_device_realize(VirtioCcwDevice *dev, Error **errp)
-{
- unsigned int cssid = 0;
- unsigned int ssid = 0;
- unsigned int schid;
- unsigned int devno;
- bool have_devno = false;
- bool found = false;
- SubchDev *sch;
- int num;
- Error *err = NULL;
- VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_GET_CLASS(dev);
-
- sch = g_malloc0(sizeof(SubchDev));
-
- sch->driver_data = dev;
- dev->sch = sch;
-
- dev->indicators = NULL;
-
- /* Initialize subchannel structure. */
- sch->channel_prog = 0x0;
- sch->last_cmd_valid = false;
- sch->thinint_active = false;
- /*
- * Use a device number if provided. Otherwise, fall back to subchannel
- * number.
- */
- if (dev->bus_id) {
- num = sscanf(dev->bus_id, "%x.%x.%04x", &cssid, &ssid, &devno);
- if (num == 3) {
- if ((cssid > MAX_CSSID) || (ssid > MAX_SSID)) {
- error_setg(errp, "Invalid cssid or ssid: cssid %x, ssid %x",
- cssid, ssid);
- goto out_err;
- }
- /* Enforce use of virtual cssid. */
- if (cssid != VIRTUAL_CSSID) {
- error_setg(errp, "cssid %x not valid for virtio devices",
- cssid);
- goto out_err;
- }
- if (css_devno_used(cssid, ssid, devno)) {
- error_setg(errp, "Device %x.%x.%04x already exists",
- cssid, ssid, devno);
- goto out_err;
- }
- sch->cssid = cssid;
- sch->ssid = ssid;
- sch->devno = devno;
- have_devno = true;
- } else {
- error_setg(errp, "Malformed devno parameter '%s'", dev->bus_id);
- goto out_err;
- }
- }
-
- /* Find the next free id. */
- if (have_devno) {
- for (schid = 0; schid <= MAX_SCHID; schid++) {
- if (!css_find_subch(1, cssid, ssid, schid)) {
- sch->schid = schid;
- css_subch_assign(cssid, ssid, schid, devno, sch);
- found = true;
- break;
- }
- }
- if (!found) {
- error_setg(errp, "No free subchannel found for %x.%x.%04x",
- cssid, ssid, devno);
- goto out_err;
- }
- trace_virtio_ccw_new_device(cssid, ssid, schid, devno,
- "user-configured");
- } else {
- 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) {
- error_setg(errp, "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) {
- error_setg(errp, "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;
- sch->disable_cb = virtio_sch_disable_cb;
-
- /* Build senseid data. */
- memset(&sch->id, 0, sizeof(SenseId));
- sch->id.reserved = 0xff;
- sch->id.cu_type = VIRTIO_CCW_CU_TYPE;
-
- dev->revision = -1;
-
- if (k->realize) {
- k->realize(dev, &err);
- }
- if (err) {
- error_propagate(errp, err);
- css_subch_assign(cssid, ssid, schid, devno, NULL);
- goto out_err;
- }
-
- return;
-
-out_err:
- dev->sch = NULL;
- g_free(sch);
-}
-
-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);
- }
- if (dev->indicators) {
- release_indicator(&dev->routes.adapter, dev->indicators);
- dev->indicators = NULL;
- }
- return 0;
-}
-
-static void virtio_ccw_net_realize(VirtioCcwDevice *ccw_dev, Error **errp)
-{
- DeviceState *qdev = DEVICE(ccw_dev);
- VirtIONetCcw *dev = VIRTIO_NET_CCW(ccw_dev);
- DeviceState *vdev = DEVICE(&dev->vdev);
- Error *err = NULL;
-
- virtio_net_set_netclient_name(&dev->vdev, qdev->id,
- object_get_typename(OBJECT(qdev)));
- qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
- object_property_set_bool(OBJECT(vdev), true, "realized", &err);
- if (err) {
- error_propagate(errp, err);
- }
-}
-
-static void virtio_ccw_net_instance_init(Object *obj)
-{
- VirtIONetCcw *dev = VIRTIO_NET_CCW(obj);
-
- virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
- TYPE_VIRTIO_NET);
- object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
- "bootindex", &error_abort);
-}
-
-static void virtio_ccw_blk_realize(VirtioCcwDevice *ccw_dev, Error **errp)
-{
- VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(ccw_dev);
- DeviceState *vdev = DEVICE(&dev->vdev);
- Error *err = NULL;
-
- qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
- object_property_set_bool(OBJECT(vdev), true, "realized", &err);
- if (err) {
- error_propagate(errp, err);
- }
-}
-
-static void virtio_ccw_blk_instance_init(Object *obj)
-{
- VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(obj);
-
- virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
- TYPE_VIRTIO_BLK);
- object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev),"iothread",
- &error_abort);
- object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
- "bootindex", &error_abort);
-}
-
-static void virtio_ccw_serial_realize(VirtioCcwDevice *ccw_dev, Error **errp)
-{
- VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(ccw_dev);
- DeviceState *vdev = DEVICE(&dev->vdev);
- DeviceState *proxy = DEVICE(ccw_dev);
- Error *err = NULL;
- char *bus_name;
-
- /*
- * For command line compatibility, this sets the virtio-serial-device bus
- * name as before.
- */
- if (proxy->id) {
- bus_name = g_strdup_printf("%s.0", proxy->id);
- virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
- g_free(bus_name);
- }
-
- qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
- object_property_set_bool(OBJECT(vdev), true, "realized", &err);
- if (err) {
- error_propagate(errp, err);
- }
-}
-
-
-static void virtio_ccw_serial_instance_init(Object *obj)
-{
- VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(obj);
-
- virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
- TYPE_VIRTIO_SERIAL);
-}
-
-static void virtio_ccw_balloon_realize(VirtioCcwDevice *ccw_dev, Error **errp)
-{
- VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(ccw_dev);
- DeviceState *vdev = DEVICE(&dev->vdev);
- Error *err = NULL;
-
- qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
- object_property_set_bool(OBJECT(vdev), true, "realized", &err);
- if (err) {
- error_propagate(errp, err);
- }
-}
-
-static void virtio_ccw_balloon_instance_init(Object *obj)
-{
- VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(obj);
-
- virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
- TYPE_VIRTIO_BALLOON);
- object_property_add_alias(obj, "guest-stats", OBJECT(&dev->vdev),
- "guest-stats", &error_abort);
- object_property_add_alias(obj, "guest-stats-polling-interval",
- OBJECT(&dev->vdev),
- "guest-stats-polling-interval", &error_abort);
-}
-
-static void virtio_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp)
-{
- VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(ccw_dev);
- DeviceState *vdev = DEVICE(&dev->vdev);
- DeviceState *qdev = DEVICE(ccw_dev);
- Error *err = NULL;
- char *bus_name;
-
- /*
- * For command line compatibility, this sets the virtio-scsi-device bus
- * name as before.
- */
- if (qdev->id) {
- bus_name = g_strdup_printf("%s.0", qdev->id);
- virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
- g_free(bus_name);
- }
-
- qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
- object_property_set_bool(OBJECT(vdev), true, "realized", &err);
- if (err) {
- error_propagate(errp, err);
- }
-}
-
-static void virtio_ccw_scsi_instance_init(Object *obj)
-{
- VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(obj);
-
- virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
- TYPE_VIRTIO_SCSI);
- object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev), "iothread",
- &error_abort);
-}
-
-#ifdef CONFIG_VHOST_SCSI
-static void vhost_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp)
-{
- VHostSCSICcw *dev = VHOST_SCSI_CCW(ccw_dev);
- DeviceState *vdev = DEVICE(&dev->vdev);
- Error *err = NULL;
-
- qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
- object_property_set_bool(OBJECT(vdev), true, "realized", &err);
- if (err) {
- error_propagate(errp, err);
- }
-}
-
-static void vhost_ccw_scsi_instance_init(Object *obj)
-{
- VHostSCSICcw *dev = VHOST_SCSI_CCW(obj);
-
- virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
- TYPE_VHOST_SCSI);
-}
-#endif
-
-static void virtio_ccw_rng_realize(VirtioCcwDevice *ccw_dev, Error **errp)
-{
- VirtIORNGCcw *dev = VIRTIO_RNG_CCW(ccw_dev);
- DeviceState *vdev = DEVICE(&dev->vdev);
- Error *err = NULL;
-
- qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
- object_property_set_bool(OBJECT(vdev), true, "realized", &err);
- if (err) {
- error_propagate(errp, err);
- return;
- }
-
- object_property_set_link(OBJECT(dev),
- OBJECT(dev->vdev.conf.rng), "rng",
- NULL);
-}
-
-/* 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 uint8_t virtio_set_ind_atomic(SubchDev *sch, uint64_t ind_loc,
- uint8_t to_be_set)
-{
- uint8_t ind_old, ind_new;
- hwaddr len = 1;
- uint8_t *ind_addr;
-
- ind_addr = cpu_physical_memory_map(ind_loc, &len, 1);
- if (!ind_addr) {
- error_report("%s(%x.%x.%04x): unable to access indicator",
- __func__, sch->cssid, sch->ssid, sch->schid);
- return -1;
- }
- do {
- ind_old = *ind_addr;
- ind_new = ind_old | to_be_set;
- } while (atomic_cmpxchg(ind_addr, ind_old, ind_new) != ind_old);
- cpu_physical_memory_unmap(ind_addr, len, 1, len);
-
- return ind_old;
-}
-
-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;
-
- /* queue indicators + secondary indicators */
- if (vector >= VIRTIO_CCW_QUEUE_MAX + 64) {
- return;
- }
-
- if (vector < VIRTIO_CCW_QUEUE_MAX) {
- if (!dev->indicators) {
- return;
- }
- if (sch->thinint_active) {
- /*
- * In the adapter interrupt case, indicators points to a
- * memory area that may be (way) larger than 64 bit and
- * ind_bit indicates the start of the indicators in a big
- * endian notation.
- */
- uint64_t ind_bit = dev->routes.adapter.ind_offset;
-
- virtio_set_ind_atomic(sch, dev->indicators->addr +
- (ind_bit + vector) / 8,
- 0x80 >> ((ind_bit + vector) % 8));
- if (!virtio_set_ind_atomic(sch, dev->summary_indicator->addr,
- 0x01)) {
- css_adapter_interrupt(dev->thinint_isc);
- }
- } else {
- indicators = address_space_ldq(&address_space_memory,
- dev->indicators->addr,
- MEMTXATTRS_UNSPECIFIED,
- NULL);
- indicators |= 1ULL << vector;
- address_space_stq(&address_space_memory, dev->indicators->addr,
- indicators, MEMTXATTRS_UNSPECIFIED, NULL);
- css_conditional_io_interrupt(sch);
- }
- } else {
- if (!dev->indicators2) {
- return;
- }
- vector = 0;
- indicators = address_space_ldq(&address_space_memory,
- dev->indicators2->addr,
- MEMTXATTRS_UNSPECIFIED,
- NULL);
- indicators |= 1ULL << vector;
- address_space_stq(&address_space_memory, dev->indicators2->addr,
- indicators, MEMTXATTRS_UNSPECIFIED, NULL);
- css_conditional_io_interrupt(sch);
- }
-}
-
-static void virtio_ccw_reset(DeviceState *d)
-{
- VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
- VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
-
- virtio_ccw_reset_virtio(dev, vdev);
- css_reset_sch(dev->sch);
-}
-
-static void virtio_ccw_vmstate_change(DeviceState *d, bool running)
-{
- VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
-
- if (running) {
- virtio_ccw_start_ioeventfd(dev);
- } else {
- virtio_ccw_stop_ioeventfd(dev);
- }
-}
-
-static bool virtio_ccw_query_guest_notifiers(DeviceState *d)
-{
- VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
-
- return !!(dev->sch->curr_status.pmcw.flags & PMCW_FLAGS_MASK_ENA);
-}
-
-static int virtio_ccw_set_host_notifier(DeviceState *d, int n, bool assign)
-{
- VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
-
- /* Stop using the generic ioeventfd, we are doing eventfd handling
- * ourselves below */
- dev->ioeventfd_disabled = assign;
- if (assign) {
- virtio_ccw_stop_ioeventfd(dev);
- }
- return virtio_ccw_set_guest2host_notifier(dev, n, assign, false);
-}
-
-static int virtio_ccw_get_mappings(VirtioCcwDevice *dev)
-{
- int r;
-
- if (!dev->sch->thinint_active) {
- return -EINVAL;
- }
-
- r = map_indicator(&dev->routes.adapter, dev->summary_indicator);
- if (r) {
- return r;
- }
- r = map_indicator(&dev->routes.adapter, dev->indicators);
- if (r) {
- return r;
- }
- dev->routes.adapter.summary_addr = dev->summary_indicator->map;
- dev->routes.adapter.ind_addr = dev->indicators->map;
-
- return 0;
-}
-
-static int virtio_ccw_setup_irqroutes(VirtioCcwDevice *dev, int nvqs)
-{
- int i;
- VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
- int ret;
- S390FLICState *fs = s390_get_flic();
- S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs);
-
- ret = virtio_ccw_get_mappings(dev);
- if (ret) {
- return ret;
- }
- for (i = 0; i < nvqs; i++) {
- if (!virtio_queue_get_num(vdev, i)) {
- break;
- }
- }
- dev->routes.num_routes = i;
- return fsc->add_adapter_routes(fs, &dev->routes);
-}
-
-static void virtio_ccw_release_irqroutes(VirtioCcwDevice *dev, int nvqs)
-{
- S390FLICState *fs = s390_get_flic();
- S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs);
-
- fsc->release_adapter_routes(fs, &dev->routes);
-}
-
-static int virtio_ccw_add_irqfd(VirtioCcwDevice *dev, int n)
-{
- VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
- VirtQueue *vq = virtio_get_queue(vdev, n);
- EventNotifier *notifier = virtio_queue_get_guest_notifier(vq);
-
- return kvm_irqchip_add_irqfd_notifier_gsi(kvm_state, notifier, NULL,
- dev->routes.gsi[n]);
-}
-
-static void virtio_ccw_remove_irqfd(VirtioCcwDevice *dev, int n)
-{
- VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
- VirtQueue *vq = virtio_get_queue(vdev, n);
- EventNotifier *notifier = virtio_queue_get_guest_notifier(vq);
- int ret;
-
- ret = kvm_irqchip_remove_irqfd_notifier_gsi(kvm_state, notifier,
- dev->routes.gsi[n]);
- assert(ret == 0);
-}
-
-static int virtio_ccw_set_guest_notifier(VirtioCcwDevice *dev, int n,
- bool assign, bool with_irqfd)
-{
- VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
- VirtQueue *vq = virtio_get_queue(vdev, n);
- EventNotifier *notifier = virtio_queue_get_guest_notifier(vq);
- VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
-
- if (assign) {
- int r = event_notifier_init(notifier, 0);
-
- if (r < 0) {
- return r;
- }
- virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd);
- if (with_irqfd) {
- r = virtio_ccw_add_irqfd(dev, n);
- if (r) {
- virtio_queue_set_guest_notifier_fd_handler(vq, false,
- with_irqfd);
- return r;
- }
- }
- /*
- * We do not support individual masking for channel devices, so we
- * need to manually trigger any guest masking callbacks here.
- */
- if (k->guest_notifier_mask) {
- k->guest_notifier_mask(vdev, n, false);
- }
- /* get lost events and re-inject */
- if (k->guest_notifier_pending &&
- k->guest_notifier_pending(vdev, n)) {
- event_notifier_set(notifier);
- }
- } else {
- if (k->guest_notifier_mask) {
- k->guest_notifier_mask(vdev, n, true);
- }
- if (with_irqfd) {
- virtio_ccw_remove_irqfd(dev, n);
- }
- virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd);
- event_notifier_cleanup(notifier);
- }
- return 0;
-}
-
-static int virtio_ccw_set_guest_notifiers(DeviceState *d, int nvqs,
- bool assigned)
-{
- VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
- VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
- bool with_irqfd = dev->sch->thinint_active && kvm_irqfds_enabled();
- int r, n;
-
- if (with_irqfd && assigned) {
- /* irq routes need to be set up before assigning irqfds */
- r = virtio_ccw_setup_irqroutes(dev, nvqs);
- if (r < 0) {
- goto irqroute_error;
- }
- }
- for (n = 0; n < nvqs; n++) {
- if (!virtio_queue_get_num(vdev, n)) {
- break;
- }
- r = virtio_ccw_set_guest_notifier(dev, n, assigned, with_irqfd);
- if (r < 0) {
- goto assign_error;
- }
- }
- if (with_irqfd && !assigned) {
- /* release irq routes after irqfds have been released */
- virtio_ccw_release_irqroutes(dev, nvqs);
- }
- return 0;
-
-assign_error:
- while (--n >= 0) {
- virtio_ccw_set_guest_notifier(dev, n, !assigned, false);
- }
-irqroute_error:
- if (with_irqfd && assigned) {
- virtio_ccw_release_irqroutes(dev, nvqs);
- }
- return r;
-}
-
-static void virtio_ccw_save_queue(DeviceState *d, int n, QEMUFile *f)
-{
- VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
- VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
-
- qemu_put_be16(f, virtio_queue_vector(vdev, n));
-}
-
-static int virtio_ccw_load_queue(DeviceState *d, int n, QEMUFile *f)
-{
- VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
- VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
- uint16_t vector;
-
- qemu_get_be16s(f, &vector);
- virtio_queue_set_vector(vdev, n , vector);
-
- return 0;
-}
-
-static void virtio_ccw_save_config(DeviceState *d, QEMUFile *f)
-{
- VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
- SubchDev *s = dev->sch;
- VirtIODevice *vdev = virtio_ccw_get_vdev(s);
-
- subch_device_save(s, f);
- if (dev->indicators != NULL) {
- qemu_put_be32(f, dev->indicators->len);
- qemu_put_be64(f, dev->indicators->addr);
- } else {
- qemu_put_be32(f, 0);
- qemu_put_be64(f, 0UL);
- }
- if (dev->indicators2 != NULL) {
- qemu_put_be32(f, dev->indicators2->len);
- qemu_put_be64(f, dev->indicators2->addr);
- } else {
- qemu_put_be32(f, 0);
- qemu_put_be64(f, 0UL);
- }
- if (dev->summary_indicator != NULL) {
- qemu_put_be32(f, dev->summary_indicator->len);
- qemu_put_be64(f, dev->summary_indicator->addr);
- } else {
- qemu_put_be32(f, 0);
- qemu_put_be64(f, 0UL);
- }
- qemu_put_be16(f, vdev->config_vector);
- qemu_put_be64(f, dev->routes.adapter.ind_offset);
- qemu_put_byte(f, dev->thinint_isc);
- qemu_put_be32(f, dev->revision);
-}
-
-static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f)
-{
- VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
- SubchDev *s = dev->sch;
- VirtIODevice *vdev = virtio_ccw_get_vdev(s);
- int len;
-
- s->driver_data = dev;
- subch_device_load(s, f);
- len = qemu_get_be32(f);
- if (len != 0) {
- dev->indicators = get_indicator(qemu_get_be64(f), len);
- } else {
- qemu_get_be64(f);
- dev->indicators = NULL;
- }
- len = qemu_get_be32(f);
- if (len != 0) {
- dev->indicators2 = get_indicator(qemu_get_be64(f), len);
- } else {
- qemu_get_be64(f);
- dev->indicators2 = NULL;
- }
- len = qemu_get_be32(f);
- if (len != 0) {
- dev->summary_indicator = get_indicator(qemu_get_be64(f), len);
- } else {
- qemu_get_be64(f);
- dev->summary_indicator = NULL;
- }
- qemu_get_be16s(f, &vdev->config_vector);
- dev->routes.adapter.ind_offset = qemu_get_be64(f);
- dev->thinint_isc = qemu_get_byte(f);
- dev->revision = qemu_get_be32(f);
- if (s->thinint_active) {
- return css_register_io_adapter(CSS_IO_ADAPTER_VIRTIO,
- dev->thinint_isc, true, false,
- &dev->routes.adapter.adapter_id);
- }
-
- return 0;
-}
-
-/* This is called by virtio-bus just after the device is plugged. */
-static void virtio_ccw_device_plugged(DeviceState *d, Error **errp)
-{
- VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
- VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
- SubchDev *sch = dev->sch;
- int n = virtio_get_num_queues(vdev);
-
- if (virtio_get_num_queues(vdev) > VIRTIO_CCW_QUEUE_MAX) {
- error_setg(errp, "The nubmer of virtqueues %d "
- "exceeds ccw limit %d", n,
- VIRTIO_CCW_QUEUE_MAX);
- return;
- }
-
- if (!kvm_eventfds_enabled()) {
- dev->flags &= ~VIRTIO_CCW_FLAG_USE_IOEVENTFD;
- }
-
- sch->id.cu_model = virtio_bus_get_vdev_id(&dev->bus);
-
- if (dev->max_rev >= 1) {
- virtio_add_feature(&vdev->host_features, VIRTIO_F_VERSION_1);
- }
-
- css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid,
- d->hotplugged, 1);
-}
-
-static void virtio_ccw_post_plugged(DeviceState *d, Error **errp)
-{
- VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
- VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
-
- if (!virtio_host_has_feature(vdev, VIRTIO_F_VERSION_1)) {
- /* A backend didn't support modern virtio. */
- dev->max_rev = 0;
- }
-}
-
-static void virtio_ccw_device_unplugged(DeviceState *d)
-{
- VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
-
- virtio_ccw_stop_ioeventfd(dev);
-}
-/**************** Virtio-ccw Bus Device Descriptions *******************/
-
-static Property virtio_ccw_net_properties[] = {
- DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
- DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
- VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
- DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
- VIRTIO_CCW_MAX_REV),
- 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->realize = virtio_ccw_net_realize;
- k->exit = virtio_ccw_exit;
- dc->reset = virtio_ccw_reset;
- dc->props = virtio_ccw_net_properties;
- set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
-}
-
-static const TypeInfo virtio_ccw_net = {
- .name = TYPE_VIRTIO_NET_CCW,
- .parent = TYPE_VIRTIO_CCW_DEVICE,
- .instance_size = sizeof(VirtIONetCcw),
- .instance_init = virtio_ccw_net_instance_init,
- .class_init = virtio_ccw_net_class_init,
-};
-
-static Property virtio_ccw_blk_properties[] = {
- DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
- DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
- VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
- DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
- VIRTIO_CCW_MAX_REV),
- 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->realize = virtio_ccw_blk_realize;
- k->exit = virtio_ccw_exit;
- dc->reset = virtio_ccw_reset;
- dc->props = virtio_ccw_blk_properties;
- set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
-}
-
-static const TypeInfo virtio_ccw_blk = {
- .name = TYPE_VIRTIO_BLK_CCW,
- .parent = TYPE_VIRTIO_CCW_DEVICE,
- .instance_size = sizeof(VirtIOBlkCcw),
- .instance_init = virtio_ccw_blk_instance_init,
- .class_init = virtio_ccw_blk_class_init,
-};
-
-static Property virtio_ccw_serial_properties[] = {
- DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
- DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
- VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
- DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
- VIRTIO_CCW_MAX_REV),
- 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->realize = virtio_ccw_serial_realize;
- k->exit = virtio_ccw_exit;
- dc->reset = virtio_ccw_reset;
- dc->props = virtio_ccw_serial_properties;
- set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
-}
-
-static const TypeInfo virtio_ccw_serial = {
- .name = TYPE_VIRTIO_SERIAL_CCW,
- .parent = TYPE_VIRTIO_CCW_DEVICE,
- .instance_size = sizeof(VirtioSerialCcw),
- .instance_init = virtio_ccw_serial_instance_init,
- .class_init = virtio_ccw_serial_class_init,
-};
-
-static Property virtio_ccw_balloon_properties[] = {
- DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
- DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
- VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
- DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
- VIRTIO_CCW_MAX_REV),
- 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->realize = virtio_ccw_balloon_realize;
- k->exit = virtio_ccw_exit;
- dc->reset = virtio_ccw_reset;
- dc->props = virtio_ccw_balloon_properties;
- set_bit(DEVICE_CATEGORY_MISC, dc->categories);
-}
-
-static const TypeInfo virtio_ccw_balloon = {
- .name = TYPE_VIRTIO_BALLOON_CCW,
- .parent = TYPE_VIRTIO_CCW_DEVICE,
- .instance_size = sizeof(VirtIOBalloonCcw),
- .instance_init = virtio_ccw_balloon_instance_init,
- .class_init = virtio_ccw_balloon_class_init,
-};
-
-static Property virtio_ccw_scsi_properties[] = {
- DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
- DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
- VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
- DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
- VIRTIO_CCW_MAX_REV),
- 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->realize = virtio_ccw_scsi_realize;
- k->exit = virtio_ccw_exit;
- dc->reset = virtio_ccw_reset;
- dc->props = virtio_ccw_scsi_properties;
- set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
-}
-
-static const TypeInfo virtio_ccw_scsi = {
- .name = TYPE_VIRTIO_SCSI_CCW,
- .parent = TYPE_VIRTIO_CCW_DEVICE,
- .instance_size = sizeof(VirtIOSCSICcw),
- .instance_init = virtio_ccw_scsi_instance_init,
- .class_init = virtio_ccw_scsi_class_init,
-};
-
-#ifdef CONFIG_VHOST_SCSI
-static Property vhost_ccw_scsi_properties[] = {
- DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
- DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
- VIRTIO_CCW_MAX_REV),
- DEFINE_PROP_END_OF_LIST(),
-};
-
-static void vhost_ccw_scsi_class_init(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
- VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
-
- k->realize = vhost_ccw_scsi_realize;
- k->exit = virtio_ccw_exit;
- dc->reset = virtio_ccw_reset;
- dc->props = vhost_ccw_scsi_properties;
- set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
-}
-
-static const TypeInfo vhost_ccw_scsi = {
- .name = TYPE_VHOST_SCSI_CCW,
- .parent = TYPE_VIRTIO_CCW_DEVICE,
- .instance_size = sizeof(VHostSCSICcw),
- .instance_init = vhost_ccw_scsi_instance_init,
- .class_init = vhost_ccw_scsi_class_init,
-};
-#endif
-
-static void virtio_ccw_rng_instance_init(Object *obj)
-{
- VirtIORNGCcw *dev = VIRTIO_RNG_CCW(obj);
-
- virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
- TYPE_VIRTIO_RNG);
- object_property_add_alias(obj, "rng", OBJECT(&dev->vdev),
- "rng", &error_abort);
-}
-
-static Property virtio_ccw_rng_properties[] = {
- DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
- DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
- VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
- DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
- VIRTIO_CCW_MAX_REV),
- DEFINE_PROP_END_OF_LIST(),
-};
-
-static void virtio_ccw_rng_class_init(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
- VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
-
- k->realize = virtio_ccw_rng_realize;
- k->exit = virtio_ccw_exit;
- dc->reset = virtio_ccw_reset;
- dc->props = virtio_ccw_rng_properties;
- set_bit(DEVICE_CATEGORY_MISC, dc->categories);
-}
-
-static const TypeInfo virtio_ccw_rng = {
- .name = TYPE_VIRTIO_RNG_CCW,
- .parent = TYPE_VIRTIO_CCW_DEVICE,
- .instance_size = sizeof(VirtIORNGCcw),
- .instance_init = virtio_ccw_rng_instance_init,
- .class_init = virtio_ccw_rng_class_init,
-};
-
-static void virtio_ccw_busdev_realize(DeviceState *dev, Error **errp)
-{
- VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev;
-
- virtio_ccw_bus_new(&_dev->bus, sizeof(_dev->bus), _dev);
- virtio_ccw_device_realize(_dev, errp);
-}
-
-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 void virtio_ccw_busdev_unplug(HotplugHandler *hotplug_dev,
- DeviceState *dev, Error **errp)
-{
- VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev;
- SubchDev *sch = _dev->sch;
-
- virtio_ccw_stop_ioeventfd(_dev);
-
- /*
- * 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));
-}
-
-static void virtio_ccw_device_class_init(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
-
- dc->realize = virtio_ccw_busdev_realize;
- dc->exit = virtio_ccw_busdev_exit;
- 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)
-{
- SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
- HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass);
- DeviceClass *dc = DEVICE_CLASS(klass);
-
- k->init = virtual_css_bridge_init;
- hc->unplug = virtio_ccw_busdev_unplug;
- set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
-}
-
-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,
- .interfaces = (InterfaceInfo[]) {
- { TYPE_HOTPLUG_HANDLER },
- { }
- }
-};
-
-/* virtio-ccw-bus */
-
-static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size,
- VirtioCcwDevice *dev)
-{
- DeviceState *qdev = DEVICE(dev);
- char virtio_bus_name[] = "virtio-bus";
-
- qbus_create_inplace(bus, bus_size, TYPE_VIRTIO_CCW_BUS,
- qdev, virtio_bus_name);
-}
-
-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->vmstate_change = virtio_ccw_vmstate_change;
- k->query_guest_notifiers = virtio_ccw_query_guest_notifiers;
- k->set_host_notifier = virtio_ccw_set_host_notifier;
- k->set_guest_notifiers = virtio_ccw_set_guest_notifiers;
- k->save_queue = virtio_ccw_save_queue;
- k->load_queue = virtio_ccw_load_queue;
- k->save_config = virtio_ccw_save_config;
- k->load_config = virtio_ccw_load_config;
- k->device_plugged = virtio_ccw_device_plugged;
- k->post_plugged = virtio_ccw_post_plugged;
- k->device_unplugged = virtio_ccw_device_unplugged;
-}
-
-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,
-};
-
-#ifdef CONFIG_VIRTFS
-static Property virtio_ccw_9p_properties[] = {
- DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
- DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
- VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
- DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
- VIRTIO_CCW_MAX_REV),
- DEFINE_PROP_END_OF_LIST(),
-};
-
-static void virtio_ccw_9p_realize(VirtioCcwDevice *ccw_dev, Error **errp)
-{
- V9fsCCWState *dev = VIRTIO_9P_CCW(ccw_dev);
- DeviceState *vdev = DEVICE(&dev->vdev);
- Error *err = NULL;
-
- qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
- object_property_set_bool(OBJECT(vdev), true, "realized", &err);
- if (err) {
- error_propagate(errp, err);
- }
-}
-
-static void virtio_ccw_9p_class_init(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
- VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
-
- k->exit = virtio_ccw_exit;
- k->realize = virtio_ccw_9p_realize;
- dc->reset = virtio_ccw_reset;
- dc->props = virtio_ccw_9p_properties;
- set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
-}
-
-static void virtio_ccw_9p_instance_init(Object *obj)
-{
- V9fsCCWState *dev = VIRTIO_9P_CCW(obj);
-
- virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
- TYPE_VIRTIO_9P);
-}
-
-static const TypeInfo virtio_ccw_9p_info = {
- .name = TYPE_VIRTIO_9P_CCW,
- .parent = TYPE_VIRTIO_CCW_DEVICE,
- .instance_size = sizeof(V9fsCCWState),
- .instance_init = virtio_ccw_9p_instance_init,
- .class_init = virtio_ccw_9p_class_init,
-};
-#endif
-
-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);
-#ifdef CONFIG_VHOST_SCSI
- type_register_static(&vhost_ccw_scsi);
-#endif
- type_register_static(&virtio_ccw_rng);
- type_register_static(&virtual_css_bridge_info);
-#ifdef CONFIG_VIRTFS
- type_register_static(&virtio_ccw_9p_info);
-#endif
-}
-
-type_init(virtio_ccw_register)