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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

Browse Source 
This update brings dataplane to virtio-scsi (NOT
yet 100% thread-safe, though, which makes it really, really
experimental.  It also brings asynchronous cancellation to
the SCSI subsystem and implements it in virtio-scsi.  This
is a pretty important feature.  Almost all the work here
was done by Fam Zheng.

I also included the virtio refcount fixes from Gonglei,
because they had a small conflict with virtio-scsi dataplane.

This pull request is using the new subkey 4E6B09D7.

# gpg: Signature made Tue 30 Sep 2014 12:31:02 BST using RSA key ID 4E6B09D7
# gpg: Good signature from "Paolo Bonzini <pbonzini@redhat.com>"
# gpg:                 aka "Paolo Bonzini <bonzini@gnu.org>"

* remotes/bonzini/tags/for-upstream: (39 commits)
  block/iscsi: handle failure on malloc of the allocationmap
  util: introduce bitmap_try_new
  virtio-scsi: Handle TMF request cancellation asynchronously
  scsi: Introduce scsi_req_cancel_async
  scsi: Introduce scsi_req_cancel_complete
  scsi: Drop SCSIReqOps.cancel_io
  scsi: Unify request unref in scsi_req_cancel
  scsi-generic: Handle canceled request in scsi_command_complete
  scsi: Drop scsi_req_abort
  virtio-scsi: Process ".iothread" property
  virtio-scsi: Call bdrv_io_plug/bdrv_io_unplug in cmd request handling
  virtio-scsi: Batched prepare for cmd reqs
  virtio-scsi: Two stages processing of cmd request
  virtio-scsi: Add migration state notifier for dataplane code
  virtio-scsi: Hook up with dataplane
  virtio-scsi-dataplane: Code to run virtio-scsi on iothread
  virtio-scsi: Add VirtIOSCSIVring in VirtIOSCSIReq
  virtio-scsi: Add 'iothread' property to virtio-scsi
  virtio: add a wrapper for virtio-backend initialization
  virtio-9p: fix virtio-9p child refcount in transports
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell
2014-09-30 16:45:35 +01:00
parent 7be3c1408a a9fe4c957b
commit 1831e15060
17 changed files with 765 additions and 304 deletions
Download Patch File Download Diff File Expand all files Collapse all files
block/iscsi.c
+12 -7
View File
@@ -316,6 +316,13 @@ static bool is_request_lun_aligned(int64_t sector_num, int nb_sectors,
return 1;
}
static unsigned long *iscsi_allocationmap_init(IscsiLun *iscsilun)
{
return bitmap_try_new(DIV_ROUND_UP(sector_lun2qemu(iscsilun->num_blocks,
iscsilun),
iscsilun->cluster_sectors));
}
static void iscsi_allocationmap_set(IscsiLun *iscsilun, int64_t sector_num,
int nb_sectors)
{
@@ -1402,9 +1409,10 @@ static int iscsi_open(BlockDriverState *bs, QDict *options, int flags,
iscsilun->cluster_sectors = (iscsilun->bl.opt_unmap_gran *
iscsilun->block_size) >> BDRV_SECTOR_BITS;
if (iscsilun->lbprz && !(bs->open_flags & BDRV_O_NOCACHE)) {
iscsilun->allocationmap =
bitmap_new(DIV_ROUND_UP(bs->total_sectors,
iscsilun->cluster_sectors));
iscsilun->allocationmap = iscsi_allocationmap_init(iscsilun);
if (iscsilun->allocationmap == NULL) {
ret = -ENOMEM;
}
}
}
@@ -1497,10 +1505,7 @@ static int iscsi_truncate(BlockDriverState *bs, int64_t offset)
if (iscsilun->allocationmap != NULL) {
g_free(iscsilun->allocationmap);
iscsilun->allocationmap =
bitmap_new(DIV_ROUND_UP(sector_lun2qemu(iscsilun->num_blocks,
iscsilun),
iscsilun->cluster_sectors));
iscsilun->allocationmap = iscsi_allocationmap_init(iscsilun);
}
return 0;
hw/s390x/s390-virtio-bus.c
+18 -20
View File
@@ -159,8 +159,9 @@ static int s390_virtio_net_init(VirtIOS390Device *s390_dev)
static void s390_virtio_net_instance_init(Object *obj)
{
VirtIONetS390 *dev = VIRTIO_NET_S390(obj);
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_NET);
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VIRTIO_NET);
}
static int s390_virtio_blk_init(VirtIOS390Device *s390_dev)
@@ -177,10 +178,9 @@ static int s390_virtio_blk_init(VirtIOS390Device *s390_dev)
static void s390_virtio_blk_instance_init(Object *obj)
{
VirtIOBlkS390 *dev = VIRTIO_BLK_S390(obj);
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_BLK);
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
object_unref(OBJECT(&dev->vdev));
qdev_alias_all_properties(DEVICE(&dev->vdev), 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);
}
@@ -222,8 +222,9 @@ static int s390_virtio_serial_init(VirtIOS390Device *s390_dev)
static void s390_virtio_serial_instance_init(Object *obj)
{
VirtIOSerialS390 *dev = VIRTIO_SERIAL_S390(obj);
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_SERIAL);
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VIRTIO_SERIAL);
}
static int s390_virtio_scsi_init(VirtIOS390Device *s390_dev)
@@ -254,8 +255,9 @@ static int s390_virtio_scsi_init(VirtIOS390Device *s390_dev)
static void s390_virtio_scsi_instance_init(Object *obj)
{
VirtIOSCSIS390 *dev = VIRTIO_SCSI_S390(obj);
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_SCSI);
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VIRTIO_SCSI);
}
#ifdef CONFIG_VHOST_SCSI
@@ -275,8 +277,9 @@ static int s390_vhost_scsi_init(VirtIOS390Device *s390_dev)
static void s390_vhost_scsi_instance_init(Object *obj)
{
VHostSCSIS390 *dev = VHOST_SCSI_S390(obj);
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VHOST_SCSI);
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VHOST_SCSI);
}
#endif
@@ -301,8 +304,9 @@ static int s390_virtio_rng_init(VirtIOS390Device *s390_dev)
static void s390_virtio_rng_instance_init(Object *obj)
{
VirtIORNGS390 *dev = VIRTIO_RNG_S390(obj);
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_RNG);
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VIRTIO_RNG);
object_property_add_link(obj, "rng", TYPE_RNG_BACKEND,
(Object **)&dev->vdev.conf.rng,
qdev_prop_allow_set_link_before_realize,
@@ -493,10 +497,8 @@ static unsigned virtio_s390_get_features(DeviceState *d)
/**************** S390 Virtio Bus Device Descriptions *******************/
static Property s390_virtio_net_properties[] = {
DEFINE_NIC_PROPERTIES(VirtIONetS390, vdev.nic_conf),
DEFINE_VIRTIO_COMMON_FEATURES(VirtIOS390Device, host_features),
DEFINE_VIRTIO_NET_FEATURES(VirtIOS390Device, host_features),
DEFINE_VIRTIO_NET_PROPERTIES(VirtIONetS390, vdev.net_conf),
DEFINE_PROP_END_OF_LIST(),
};
@@ -533,7 +535,6 @@ static const TypeInfo s390_virtio_blk = {
};
static Property s390_virtio_serial_properties[] = {
DEFINE_VIRTIO_SERIAL_PROPERTIES(VirtIOSerialS390, vdev.serial),
DEFINE_PROP_END_OF_LIST(),
};
@@ -556,7 +557,6 @@ static const TypeInfo s390_virtio_serial = {
static Property s390_virtio_rng_properties[] = {
DEFINE_VIRTIO_COMMON_FEATURES(VirtIOS390Device, host_features),
DEFINE_VIRTIO_RNG_PROPERTIES(VirtIORNGS390, vdev.conf),
DEFINE_PROP_END_OF_LIST(),
};
@@ -614,7 +614,6 @@ static const TypeInfo virtio_s390_device_info = {
};
static Property s390_virtio_scsi_properties[] = {
DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOSCSIS390, vdev.parent_obj.conf),
DEFINE_VIRTIO_COMMON_FEATURES(VirtIOS390Device, host_features),
DEFINE_VIRTIO_SCSI_FEATURES(VirtIOS390Device, host_features),
DEFINE_PROP_END_OF_LIST(),
@@ -640,7 +639,6 @@ static const TypeInfo s390_virtio_scsi = {
#ifdef CONFIG_VHOST_SCSI
static Property s390_vhost_scsi_properties[] = {
DEFINE_VIRTIO_COMMON_FEATURES(VirtIOS390Device, host_features),
DEFINE_VHOST_SCSI_PROPERTIES(VHostSCSIS390, vdev.parent_obj.conf),
DEFINE_PROP_END_OF_LIST(),
};
hw/s390x/virtio-ccw.c
+21 -21
View File
@@ -792,8 +792,9 @@ static int virtio_ccw_net_init(VirtioCcwDevice *ccw_dev)
static void virtio_ccw_net_instance_init(Object *obj)
{
VirtIONetCcw *dev = VIRTIO_NET_CCW(obj);
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_NET);
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VIRTIO_NET);
}
static int virtio_ccw_blk_init(VirtioCcwDevice *ccw_dev)
@@ -811,10 +812,9 @@ static int virtio_ccw_blk_init(VirtioCcwDevice *ccw_dev)
static void virtio_ccw_blk_instance_init(Object *obj)
{
VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(obj);
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_BLK);
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
object_unref(OBJECT(&dev->vdev));
qdev_alias_all_properties(DEVICE(&dev->vdev), 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);
}
@@ -848,8 +848,9 @@ static int virtio_ccw_serial_init(VirtioCcwDevice *ccw_dev)
static void virtio_ccw_serial_instance_init(Object *obj)
{
VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(obj);
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_SERIAL);
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VIRTIO_SERIAL);
}
static int virtio_ccw_balloon_init(VirtioCcwDevice *ccw_dev)
@@ -896,7 +897,7 @@ static void virtio_ccw_balloon_instance_init(Object *obj)
VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(obj);
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_BALLOON);
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
object_unref(OBJECT(&dev->vdev));
object_property_add(obj, "guest-stats", "guest statistics",
balloon_ccw_stats_get_all, NULL, NULL, dev, NULL);
@@ -934,8 +935,11 @@ static int virtio_ccw_scsi_init(VirtioCcwDevice *ccw_dev)
static void virtio_ccw_scsi_instance_init(Object *obj)
{
VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(obj);
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_SCSI);
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
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
@@ -955,8 +959,9 @@ static int vhost_ccw_scsi_init(VirtioCcwDevice *ccw_dev)
static void vhost_ccw_scsi_instance_init(Object *obj)
{
VHostSCSICcw *dev = VHOST_SCSI_CCW(obj);
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VHOST_SCSI);
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VHOST_SCSI);
}
#endif
@@ -1374,8 +1379,6 @@ static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f)
static Property virtio_ccw_net_properties[] = {
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
DEFINE_VIRTIO_NET_FEATURES(VirtioCcwDevice, host_features[0]),
DEFINE_VIRTIO_NET_PROPERTIES(VirtIONetCcw, vdev.net_conf),
DEFINE_NIC_PROPERTIES(VirtIONetCcw, vdev.nic_conf),
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
DEFINE_PROP_END_OF_LIST(),
@@ -1428,7 +1431,6 @@ static const TypeInfo virtio_ccw_blk = {
static Property virtio_ccw_serial_properties[] = {
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
DEFINE_VIRTIO_SERIAL_PROPERTIES(VirtioSerialCcw, vdev.serial),
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
DEFINE_PROP_END_OF_LIST(),
@@ -1481,7 +1483,6 @@ static const TypeInfo virtio_ccw_balloon = {
static Property virtio_ccw_scsi_properties[] = {
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOSCSICcw, vdev.parent_obj.conf),
DEFINE_VIRTIO_SCSI_FEATURES(VirtioCcwDevice, host_features[0]),
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
@@ -1510,7 +1511,6 @@ static const TypeInfo virtio_ccw_scsi = {
#ifdef CONFIG_VHOST_SCSI
static Property vhost_ccw_scsi_properties[] = {
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
DEFINE_VHOST_SCSI_PROPERTIES(VirtIOSCSICcw, vdev.parent_obj.conf),
DEFINE_PROP_END_OF_LIST(),
};
@@ -1537,8 +1537,9 @@ static const TypeInfo vhost_ccw_scsi = {
static void virtio_ccw_rng_instance_init(Object *obj)
{
VirtIORNGCcw *dev = VIRTIO_RNG_CCW(obj);
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_RNG);
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VIRTIO_RNG);
object_property_add_link(obj, "rng", TYPE_RNG_BACKEND,
(Object **)&dev->vdev.conf.rng,
qdev_prop_allow_set_link_before_realize,
@@ -1547,7 +1548,6 @@ static void virtio_ccw_rng_instance_init(Object *obj)
static Property virtio_ccw_rng_properties[] = {
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
DEFINE_VIRTIO_RNG_PROPERTIES(VirtIORNGCcw, vdev.conf),
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
DEFINE_PROP_END_OF_LIST(),
hw/scsi/Makefile.objs
+1 -1
View File
@@ -8,6 +8,6 @@ common-obj-$(CONFIG_ESP_PCI) += esp-pci.o
obj-$(CONFIG_PSERIES) += spapr_vscsi.o
ifeq ($(CONFIG_VIRTIO),y)
obj-y += virtio-scsi.o
obj-y += virtio-scsi.o virtio-scsi-dataplane.o
obj-$(CONFIG_VHOST_SCSI) += vhost-scsi.o
endif
hw/scsi/scsi-bus.c
+43 -24
View File
@@ -551,8 +551,11 @@ SCSIRequest *scsi_req_alloc(const SCSIReqOps *reqops, SCSIDevice *d,
SCSIRequest *req;
SCSIBus *bus = scsi_bus_from_device(d);
BusState *qbus = BUS(bus);
const int memset_off = offsetof(SCSIRequest, sense)
+ sizeof(req->sense);
req = g_malloc0(reqops->size);
req = g_slice_alloc(reqops->size);
memset((uint8_t *)req + memset_off, 0, reqops->size - memset_off);
req->refcount = 1;
req->bus = bus;
req->dev = d;
@@ -560,10 +563,10 @@ SCSIRequest *scsi_req_alloc(const SCSIReqOps *reqops, SCSIDevice *d,
req->lun = lun;
req->hba_private = hba_private;
req->status = -1;
req->sense_len = 0;
req->ops = reqops;
object_ref(OBJECT(d));
object_ref(OBJECT(qbus->parent));
notifier_list_init(&req->cancel_notifiers);
trace_scsi_req_alloc(req->dev->id, req->lun, req->tag);
return req;
}
@@ -1603,7 +1606,7 @@ void scsi_req_unref(SCSIRequest *req)
}
object_unref(OBJECT(req->dev));
object_unref(OBJECT(qbus->parent));
g_free(req);
g_slice_free1(req->ops->size, req);
}
}
@@ -1713,9 +1716,44 @@ void scsi_req_complete(SCSIRequest *req, int status)
scsi_req_ref(req);
scsi_req_dequeue(req);
req->bus->info->complete(req, req->status, req->resid);
/* Cancelled requests might end up being completed instead of cancelled */
notifier_list_notify(&req->cancel_notifiers, req);
scsi_req_unref(req);
}
/* Called by the devices when the request is canceled. */
void scsi_req_cancel_complete(SCSIRequest *req)
{
assert(req->io_canceled);
if (req->bus->info->cancel) {
req->bus->info->cancel(req);
}
notifier_list_notify(&req->cancel_notifiers, req);
scsi_req_unref(req);
}
/* Cancel @req asynchronously. @notifier is added to @req's cancellation
* notifier list, the bus will be notified the requests cancellation is
* completed.
* */
void scsi_req_cancel_async(SCSIRequest *req, Notifier *notifier)
{
trace_scsi_req_cancel(req->dev->id, req->lun, req->tag);
if (notifier) {
notifier_list_add(&req->cancel_notifiers, notifier);
}
if (req->io_canceled) {
return;
}
scsi_req_ref(req);
scsi_req_dequeue(req);
req->io_canceled = true;
if (req->aiocb) {
bdrv_aio_cancel_async(req->aiocb);
}
}
void scsi_req_cancel(SCSIRequest *req)
{
trace_scsi_req_cancel(req->dev->id, req->lun, req->tag);
@@ -1725,28 +1763,9 @@ void scsi_req_cancel(SCSIRequest *req)
scsi_req_ref(req);
scsi_req_dequeue(req);
req->io_canceled = true;
if (req->ops->cancel_io) {
req->ops->cancel_io(req);
if (req->aiocb) {
bdrv_aio_cancel(req->aiocb);
}
if (req->bus->info->cancel) {
req->bus->info->cancel(req);
}
scsi_req_unref(req);
}
void scsi_req_abort(SCSIRequest *req, int status)
{
if (!req->enqueued) {
return;
}
scsi_req_ref(req);
scsi_req_dequeue(req);
req->io_canceled = true;
if (req->ops->cancel_io) {
req->ops->cancel_io(req);
}
scsi_req_complete(req, status);
scsi_req_unref(req);
}
static int scsi_ua_precedence(SCSISense sense)
hw/scsi/scsi-disk.c
+16 -43
View File
@@ -105,23 +105,6 @@ static void scsi_check_condition(SCSIDiskReq *r, SCSISense sense)
scsi_req_complete(&r->req, CHECK_CONDITION);
}
/* Cancel a pending data transfer. */
static void scsi_cancel_io(SCSIRequest *req)
{
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
DPRINTF("Cancel tag=0x%x\n", req->tag);
if (r->req.aiocb) {
bdrv_aio_cancel(r->req.aiocb);
/* This reference was left in by scsi_*_data. We take ownership of
* it the moment scsi_req_cancel is called, independent of whether
* bdrv_aio_cancel completes the request or not. */
scsi_req_unref(&r->req);
}
r->req.aiocb = NULL;
}
static uint32_t scsi_init_iovec(SCSIDiskReq *r, size_t size)
{
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
@@ -185,6 +168,7 @@ static void scsi_aio_complete(void *opaque, int ret)
r->req.aiocb = NULL;
block_acct_done(bdrv_get_stats(s->qdev.conf.bs), &r->acct);
if (r->req.io_canceled) {
scsi_req_cancel_complete(&r->req);
goto done;
}
@@ -197,9 +181,7 @@ static void scsi_aio_complete(void *opaque, int ret)
scsi_req_complete(&r->req, GOOD);
done:
if (!r->req.io_canceled) {
scsi_req_unref(&r->req);
}
scsi_req_unref(&r->req);
}
static bool scsi_is_cmd_fua(SCSICommand *cmd)
@@ -233,6 +215,7 @@ static void scsi_write_do_fua(SCSIDiskReq *r)
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
if (r->req.io_canceled) {
scsi_req_cancel_complete(&r->req);
goto done;
}
@@ -246,9 +229,7 @@ static void scsi_write_do_fua(SCSIDiskReq *r)
scsi_req_complete(&r->req, GOOD);
done:
if (!r->req.io_canceled) {
scsi_req_unref(&r->req);
}
scsi_req_unref(&r->req);
}
static void scsi_dma_complete_noio(void *opaque, int ret)
@@ -261,6 +242,7 @@ static void scsi_dma_complete_noio(void *opaque, int ret)
block_acct_done(bdrv_get_stats(s->qdev.conf.bs), &r->acct);
}
if (r->req.io_canceled) {
scsi_req_cancel_complete(&r->req);
goto done;
}
@@ -280,9 +262,7 @@ static void scsi_dma_complete_noio(void *opaque, int ret)
}
done:
if (!r->req.io_canceled) {
scsi_req_unref(&r->req);
}
scsi_req_unref(&r->req);
}
static void scsi_dma_complete(void *opaque, int ret)
@@ -303,6 +283,7 @@ static void scsi_read_complete(void * opaque, int ret)
r->req.aiocb = NULL;
block_acct_done(bdrv_get_stats(s->qdev.conf.bs), &r->acct);
if (r->req.io_canceled) {
scsi_req_cancel_complete(&r->req);
goto done;
}
@@ -320,9 +301,7 @@ static void scsi_read_complete(void * opaque, int ret)
scsi_req_data(&r->req, r->qiov.size);
done:
if (!r->req.io_canceled) {
scsi_req_unref(&r->req);
}
scsi_req_unref(&r->req);
}
/* Actually issue a read to the block device. */
@@ -337,6 +316,7 @@ static void scsi_do_read(void *opaque, int ret)
block_acct_done(bdrv_get_stats(s->qdev.conf.bs), &r->acct);
}
if (r->req.io_canceled) {
scsi_req_cancel_complete(&r->req);
goto done;
}
@@ -363,9 +343,7 @@ static void scsi_do_read(void *opaque, int ret)
}
done:
if (!r->req.io_canceled) {
scsi_req_unref(&r->req);
}
scsi_req_unref(&r->req);
}
/* Read more data from scsi device into buffer. */
@@ -459,6 +437,7 @@ static void scsi_write_complete(void * opaque, int ret)
block_acct_done(bdrv_get_stats(s->qdev.conf.bs), &r->acct);
}
if (r->req.io_canceled) {
scsi_req_cancel_complete(&r->req);
goto done;
}
@@ -481,9 +460,7 @@ static void scsi_write_complete(void * opaque, int ret)
}
done:
if (!r->req.io_canceled) {
scsi_req_unref(&r->req);
}
scsi_req_unref(&r->req);
}
static void scsi_write_data(SCSIRequest *req)
@@ -1553,6 +1530,7 @@ static void scsi_unmap_complete(void *opaque, int ret)
r->req.aiocb = NULL;
if (r->req.io_canceled) {
scsi_req_cancel_complete(&r->req);
goto done;
}
@@ -1582,9 +1560,7 @@ static void scsi_unmap_complete(void *opaque, int ret)
scsi_req_complete(&r->req, GOOD);
done:
if (!r->req.io_canceled) {
scsi_req_unref(&r->req);
}
scsi_req_unref(&r->req);
g_free(data);
}
@@ -1654,6 +1630,7 @@ static void scsi_write_same_complete(void *opaque, int ret)
r->req.aiocb = NULL;
block_acct_done(bdrv_get_stats(s->qdev.conf.bs), &r->acct);
if (r->req.io_canceled) {
scsi_req_cancel_complete(&r->req);
goto done;
}
@@ -1678,9 +1655,7 @@ static void scsi_write_same_complete(void *opaque, int ret)
scsi_req_complete(&r->req, GOOD);
done:
if (!r->req.io_canceled) {
scsi_req_unref(&r->req);
}
scsi_req_unref(&r->req);
qemu_vfree(data->iov.iov_base);
g_free(data);
}
@@ -2346,7 +2321,6 @@ static const SCSIReqOps scsi_disk_emulate_reqops = {
.send_command = scsi_disk_emulate_command,
.read_data = scsi_disk_emulate_read_data,
.write_data = scsi_disk_emulate_write_data,
.cancel_io = scsi_cancel_io,
.get_buf = scsi_get_buf,
};
@@ -2356,7 +2330,6 @@ static const SCSIReqOps scsi_disk_dma_reqops = {
.send_command = scsi_disk_dma_command,
.read_data = scsi_read_data,
.write_data = scsi_write_data,
.cancel_io = scsi_cancel_io,
.get_buf = scsi_get_buf,
.load_request = scsi_disk_load_request,
.save_request = scsi_disk_save_request,
hw/scsi/scsi-generic.c
+9 -28
View File
@@ -93,6 +93,10 @@ static void scsi_command_complete(void *opaque, int ret)
SCSIGenericReq *r = (SCSIGenericReq *)opaque;
r->req.aiocb = NULL;
if (r->req.io_canceled) {
scsi_req_cancel_complete(&r->req);
goto done;
}
if (r->io_header.driver_status & SG_ERR_DRIVER_SENSE) {
r->req.sense_len = r->io_header.sb_len_wr;
}
@@ -133,26 +137,8 @@ static void scsi_command_complete(void *opaque, int ret)
r, r->req.tag, status);
scsi_req_complete(&r->req, status);
if (!r->req.io_canceled) {
scsi_req_unref(&r->req);
}
}
/* Cancel a pending data transfer. */
static void scsi_cancel_io(SCSIRequest *req)
{
SCSIGenericReq *r = DO_UPCAST(SCSIGenericReq, req, req);
DPRINTF("Cancel tag=0x%x\n", req->tag);
if (r->req.aiocb) {
bdrv_aio_cancel(r->req.aiocb);
/* This reference was left in by scsi_*_data. We take ownership of
* it independent of whether bdrv_aio_cancel completes the request
* or not. */
scsi_req_unref(&r->req);
}
r->req.aiocb = NULL;
done:
scsi_req_unref(&r->req);
}
static int execute_command(BlockDriverState *bdrv,
@@ -186,8 +172,7 @@ static void scsi_read_complete(void * opaque, int ret)
int len;
r->req.aiocb = NULL;
if (ret) {
DPRINTF("IO error ret %d\n", ret);
if (ret || r->req.io_canceled) {
scsi_command_complete(r, ret);
return;
}
@@ -211,9 +196,7 @@ static void scsi_read_complete(void * opaque, int ret)
bdrv_set_guest_block_size(s->conf.bs, s->blocksize);
scsi_req_data(&r->req, len);
if (!r->req.io_canceled) {
scsi_req_unref(&r->req);
}
scsi_req_unref(&r->req);
}
}
@@ -246,8 +229,7 @@ static void scsi_write_complete(void * opaque, int ret)
DPRINTF("scsi_write_complete() ret = %d\n", ret);
r->req.aiocb = NULL;
if (ret) {
DPRINTF("IO error\n");
if (ret || r->req.io_canceled) {
scsi_command_complete(r, ret);
return;
}
@@ -465,7 +447,6 @@ const SCSIReqOps scsi_generic_req_ops = {
.send_command = scsi_send_command,
.read_data = scsi_read_data,
.write_data = scsi_write_data,
.cancel_io = scsi_cancel_io,
.get_buf = scsi_get_buf,
.load_request = scsi_generic_load_request,
.save_request = scsi_generic_save_request,
hw/scsi/spapr_vscsi.c
+10 -3
View File
@@ -77,8 +77,9 @@ typedef struct vscsi_req {
SCSIRequest *sreq;
uint32_t qtag; /* qemu tag != srp tag */
bool active;
uint32_t data_len;
bool writing;
bool dma_error;
uint32_t data_len;
uint32_t senselen;
uint8_t sense[SCSI_SENSE_BUF_SIZE];
@@ -536,8 +537,8 @@ static void vscsi_transfer_data(SCSIRequest *sreq, uint32_t len)
}
if (rc < 0) {
fprintf(stderr, "VSCSI: RDMA error rc=%d!\n", rc);
vscsi_makeup_sense(s, req, HARDWARE_ERROR, 0, 0);
scsi_req_abort(req->sreq, CHECK_CONDITION);
req->dma_error = true;
scsi_req_cancel(req->sreq);
return;
}
@@ -591,6 +592,12 @@ static void vscsi_request_cancelled(SCSIRequest *sreq)
{
vscsi_req *req = sreq->hba_private;
if (req->dma_error) {
VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(sreq->bus->qbus.parent);
vscsi_makeup_sense(s, req, HARDWARE_ERROR, 0, 0);
vscsi_send_rsp(s, req, CHECK_CONDITION, 0, 0);
}
vscsi_put_req(req);
}
hw/scsi/vhost-scsi.c
+3 -2
View File
@@ -23,6 +23,7 @@
#include "hw/virtio/vhost.h"
#include "hw/virtio/virtio-scsi.h"
#include "hw/virtio/virtio-bus.h"
#include "hw/virtio/virtio-access.h"
/* Features supported by host kernel. */
static const int kernel_feature_bits[] = {
@@ -163,8 +164,8 @@ static void vhost_scsi_set_config(VirtIODevice *vdev,
VirtIOSCSIConfig *scsiconf = (VirtIOSCSIConfig *)config;
VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(vdev);
if ((uint32_t) ldl_p(&scsiconf->sense_size) != vs->sense_size ||
(uint32_t) ldl_p(&scsiconf->cdb_size) != vs->cdb_size) {
if ((uint32_t) virtio_ldl_p(vdev, &scsiconf->sense_size) != vs->sense_size ||
(uint32_t) virtio_ldl_p(vdev, &scsiconf->cdb_size) != vs->cdb_size) {
error_report("vhost-scsi does not support changing the sense data and CDB sizes");
exit(1);
}
hw/scsi/virtio-scsi-dataplane.c
+229
View File
@@ -0,0 +1,229 @@
/*
* Virtio SCSI dataplane
*
* Copyright Red Hat, Inc. 2014
*
* Authors:
* Fam Zheng <famz@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
*/
#include "hw/virtio/virtio-scsi.h"
#include "qemu/error-report.h"
#include <hw/scsi/scsi.h>
#include <block/scsi.h>
#include <hw/virtio/virtio-bus.h>
#include "hw/virtio/virtio-access.h"
#include "stdio.h"
/* Context: QEMU global mutex held */
void virtio_scsi_set_iothread(VirtIOSCSI *s, IOThread *iothread)
{
BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(s)));
VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus);
VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(s);
assert(!s->ctx);
s->ctx = iothread_get_aio_context(vs->conf.iothread);
/* Don't try if transport does not support notifiers. */
if (!k->set_guest_notifiers || !k->set_host_notifier) {
fprintf(stderr, "virtio-scsi: Failed to set iothread "
"(transport does not support notifiers)");
exit(1);
}
}
static VirtIOSCSIVring *virtio_scsi_vring_init(VirtIOSCSI *s,
VirtQueue *vq,
EventNotifierHandler *handler,
int n)
{
BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(s)));
VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus);
VirtIOSCSIVring *r = g_slice_new(VirtIOSCSIVring);
/* Set up virtqueue notify */
if (k->set_host_notifier(qbus->parent, n, true) != 0) {
fprintf(stderr, "virtio-scsi: Failed to set host notifier\n");
exit(1);
}
r->host_notifier = *virtio_queue_get_host_notifier(vq);
r->guest_notifier = *virtio_queue_get_guest_notifier(vq);
aio_set_event_notifier(s->ctx, &r->host_notifier, handler);
r->parent = s;
if (!vring_setup(&r->vring, VIRTIO_DEVICE(s), n)) {
fprintf(stderr, "virtio-scsi: VRing setup failed\n");
exit(1);
}
return r;
}
VirtIOSCSIReq *virtio_scsi_pop_req_vring(VirtIOSCSI *s,
VirtIOSCSIVring *vring)
{
VirtIOSCSIReq *req = virtio_scsi_init_req(s, NULL);
int r;
req->vring = vring;
r = vring_pop((VirtIODevice *)s, &vring->vring, &req->elem);
if (r < 0) {
virtio_scsi_free_req(req);
req = NULL;
}
return req;
}
void virtio_scsi_vring_push_notify(VirtIOSCSIReq *req)
{
vring_push(&req->vring->vring, &req->elem,
req->qsgl.size + req->resp_iov.size);
event_notifier_set(&req->vring->guest_notifier);
}
static void virtio_scsi_iothread_handle_ctrl(EventNotifier *notifier)
{
VirtIOSCSIVring *vring = container_of(notifier,
VirtIOSCSIVring, host_notifier);
VirtIOSCSI *s = VIRTIO_SCSI(vring->parent);
VirtIOSCSIReq *req;
event_notifier_test_and_clear(notifier);
while ((req = virtio_scsi_pop_req_vring(s, vring))) {
virtio_scsi_handle_ctrl_req(s, req);
}
}
static void virtio_scsi_iothread_handle_event(EventNotifier *notifier)
{
VirtIOSCSIVring *vring = container_of(notifier,
VirtIOSCSIVring, host_notifier);
VirtIOSCSI *s = vring->parent;
VirtIODevice *vdev = VIRTIO_DEVICE(s);
event_notifier_test_and_clear(notifier);
if (!(vdev->status & VIRTIO_CONFIG_S_DRIVER_OK)) {
return;
}
if (s->events_dropped) {
virtio_scsi_push_event(s, NULL, VIRTIO_SCSI_T_NO_EVENT, 0);
}
}
static void virtio_scsi_iothread_handle_cmd(EventNotifier *notifier)
{
VirtIOSCSIVring *vring = container_of(notifier,
VirtIOSCSIVring, host_notifier);
VirtIOSCSI *s = (VirtIOSCSI *)vring->parent;
VirtIOSCSIReq *req, *next;
QTAILQ_HEAD(, VirtIOSCSIReq) reqs = QTAILQ_HEAD_INITIALIZER(reqs);
event_notifier_test_and_clear(notifier);
while ((req = virtio_scsi_pop_req_vring(s, vring))) {
if (virtio_scsi_handle_cmd_req_prepare(s, req)) {
QTAILQ_INSERT_TAIL(&reqs, req, next);
}
}
QTAILQ_FOREACH_SAFE(req, &reqs, next, next) {
virtio_scsi_handle_cmd_req_submit(s, req);
}
}
/* Context: QEMU global mutex held */
void virtio_scsi_dataplane_start(VirtIOSCSI *s)
{
int i;
int rc;
BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(s)));
VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus);
VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(s);
if (s->dataplane_started ||
s->dataplane_starting ||
s->ctx != iothread_get_aio_context(vs->conf.iothread)) {
return;
}
s->dataplane_starting = true;
/* Set up guest notifier (irq) */
rc = k->set_guest_notifiers(qbus->parent, vs->conf.num_queues + 2, true);
if (rc != 0) {
fprintf(stderr, "virtio-scsi: Failed to set guest notifiers, "
"ensure -enable-kvm is set\n");
exit(1);
}
aio_context_acquire(s->ctx);
s->ctrl_vring = virtio_scsi_vring_init(s, vs->ctrl_vq,
virtio_scsi_iothread_handle_ctrl,
0);
s->event_vring = virtio_scsi_vring_init(s, vs->event_vq,
virtio_scsi_iothread_handle_event,
1);
s->cmd_vrings = g_malloc0(sizeof(VirtIOSCSIVring) * vs->conf.num_queues);
for (i = 0; i < vs->conf.num_queues; i++) {
s->cmd_vrings[i] =
virtio_scsi_vring_init(s, vs->cmd_vqs[i],
virtio_scsi_iothread_handle_cmd,
i + 2);
}
aio_context_release(s->ctx);
s->dataplane_starting = false;
s->dataplane_started = true;
}
/* Context: QEMU global mutex held */
void virtio_scsi_dataplane_stop(VirtIOSCSI *s)
{
BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(s)));
VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus);
VirtIODevice *vdev = VIRTIO_DEVICE(s);
VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(s);
int i;
if (!s->dataplane_started || s->dataplane_stopping) {
return;
}
s->dataplane_stopping = true;
assert(s->ctx == iothread_get_aio_context(vs->conf.iothread));
aio_context_acquire(s->ctx);
aio_set_event_notifier(s->ctx, &s->ctrl_vring->host_notifier, NULL);
aio_set_event_notifier(s->ctx, &s->event_vring->host_notifier, NULL);
for (i = 0; i < vs->conf.num_queues; i++) {
aio_set_event_notifier(s->ctx, &s->cmd_vrings[i]->host_notifier, NULL);
}
bdrv_drain_all(); /* ensure there are no in-flight requests */
aio_context_release(s->ctx);
/* Sync vring state back to virtqueue so that non-dataplane request
* processing can continue when we disable the host notifier below.
*/
vring_teardown(&s->ctrl_vring->vring, vdev, 0);
vring_teardown(&s->event_vring->vring, vdev, 1);
for (i = 0; i < vs->conf.num_queues; i++) {
vring_teardown(&s->cmd_vrings[i]->vring, vdev, 2 + i);
}
for (i = 0; i < vs->conf.num_queues + 2; i++) {
k->set_host_notifier(qbus->parent, i, false);
}
/* Clean up guest notifier (irq) */
k->set_guest_notifiers(qbus->parent, vs->conf.num_queues + 2, false);
s->dataplane_stopping = false;
s->dataplane_started = false;
}
hw/scsi/virtio-scsi.c
+249 -119
View File
File diff suppressed because it is too large Load Diff
hw/virtio/virtio-pci.c
+24 -24
View File
@@ -924,7 +924,6 @@ static Property virtio_9p_pci_properties[] = {
DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
DEFINE_VIRTIO_9P_PROPERTIES(V9fsPCIState, vdev.fsconf),
DEFINE_PROP_END_OF_LIST(),
};
@@ -946,8 +945,9 @@ static void virtio_9p_pci_class_init(ObjectClass *klass, void *data)
static void virtio_9p_pci_instance_init(Object *obj)
{
V9fsPCIState *dev = VIRTIO_9P_PCI(obj);
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_9P);
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VIRTIO_9P);
}
static const TypeInfo virtio_9p_pci_info = {
@@ -1110,10 +1110,9 @@ static void virtio_blk_pci_class_init(ObjectClass *klass, void *data)
static void virtio_blk_pci_instance_init(Object *obj)
{
VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(obj);
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_BLK);
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
object_unref(OBJECT(&dev->vdev));
qdev_alias_all_properties(DEVICE(&dev->vdev), 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);
}
@@ -1134,7 +1133,6 @@ static Property virtio_scsi_pci_properties[] = {
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
DEV_NVECTORS_UNSPECIFIED),
DEFINE_VIRTIO_SCSI_FEATURES(VirtIOPCIProxy, host_features),
DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOSCSIPCI, vdev.parent_obj.conf),
DEFINE_PROP_END_OF_LIST(),
};
@@ -1184,8 +1182,11 @@ static void virtio_scsi_pci_class_init(ObjectClass *klass, void *data)
static void virtio_scsi_pci_instance_init(Object *obj)
{
VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(obj);
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_SCSI);
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
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);
}
static const TypeInfo virtio_scsi_pci_info = {
@@ -1202,7 +1203,6 @@ static const TypeInfo virtio_scsi_pci_info = {
static Property vhost_scsi_pci_properties[] = {
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
DEV_NVECTORS_UNSPECIFIED),
DEFINE_VHOST_SCSI_PROPERTIES(VHostSCSIPCI, vdev.parent_obj.conf),
DEFINE_PROP_END_OF_LIST(),
};
@@ -1240,8 +1240,9 @@ static void vhost_scsi_pci_class_init(ObjectClass *klass, void *data)
static void vhost_scsi_pci_instance_init(Object *obj)
{
VHostSCSIPCI *dev = VHOST_SCSI_PCI(obj);
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VHOST_SCSI);
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VHOST_SCSI);
}
static const TypeInfo vhost_scsi_pci_info = {
@@ -1322,7 +1323,7 @@ static void virtio_balloon_pci_instance_init(Object *obj)
VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(obj);
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_BALLOON);
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
object_unref(OBJECT(&dev->vdev));
object_property_add(obj, "guest-stats", "guest statistics",
balloon_pci_stats_get_all, NULL, NULL, dev,
NULL);
@@ -1384,7 +1385,6 @@ static Property virtio_serial_pci_properties[] = {
VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
DEFINE_VIRTIO_SERIAL_PROPERTIES(VirtIOSerialPCI, vdev.serial),
DEFINE_PROP_END_OF_LIST(),
};
@@ -1405,8 +1405,9 @@ static void virtio_serial_pci_class_init(ObjectClass *klass, void *data)
static void virtio_serial_pci_instance_init(Object *obj)
{
VirtIOSerialPCI *dev = VIRTIO_SERIAL_PCI(obj);
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_SERIAL);
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VIRTIO_SERIAL);
}
static const TypeInfo virtio_serial_pci_info = {
@@ -1424,8 +1425,6 @@ static Property virtio_net_properties[] = {
VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, false),
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3),
DEFINE_VIRTIO_NET_FEATURES(VirtIOPCIProxy, host_features),
DEFINE_NIC_PROPERTIES(VirtIONetPCI, vdev.nic_conf),
DEFINE_VIRTIO_NET_PROPERTIES(VirtIONetPCI, vdev.net_conf),
DEFINE_PROP_END_OF_LIST(),
};
@@ -1464,8 +1463,9 @@ static void virtio_net_pci_class_init(ObjectClass *klass, void *data)
static void virtio_net_pci_instance_init(Object *obj)
{
VirtIONetPCI *dev = VIRTIO_NET_PCI(obj);
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_NET);
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VIRTIO_NET);
}
static const TypeInfo virtio_net_pci_info = {
@@ -1479,7 +1479,6 @@ static const TypeInfo virtio_net_pci_info = {
/* virtio-rng-pci */
static Property virtio_rng_pci_properties[] = {
DEFINE_VIRTIO_RNG_PROPERTIES(VirtIORngPCI, vdev.conf),
DEFINE_PROP_END_OF_LIST(),
};
@@ -1519,8 +1518,9 @@ static void virtio_rng_pci_class_init(ObjectClass *klass, void *data)
static void virtio_rng_initfn(Object *obj)
{
VirtIORngPCI *dev = VIRTIO_RNG_PCI(obj);
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_RNG);
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VIRTIO_RNG);
object_property_add_link(obj, "rng", TYPE_RNG_BACKEND,
(Object **)&dev->vdev.conf.rng,
qdev_prop_allow_set_link_before_realize,
hw/virtio/virtio.c
+11
View File
@@ -1123,6 +1123,17 @@ static void virtio_vmstate_change(void *opaque, int running, RunState state)
}
}
void virtio_instance_init_common(Object *proxy_obj, void *data,
size_t vdev_size, const char *vdev_name)
{
DeviceState *vdev = data;
object_initialize(vdev, vdev_size, vdev_name);
object_property_add_child(proxy_obj, "virtio-backend", OBJECT(vdev), NULL);
object_unref(OBJECT(vdev));
qdev_alias_all_properties(vdev, proxy_obj);
}
void virtio_init(VirtIODevice *vdev, const char *name,
uint16_t device_id, size_t config_size)
{
include/hw/scsi/scsi.h
+18 -9
View File
@@ -5,6 +5,7 @@
#include "block/block.h"
#include "hw/block/block.h"
#include "sysemu/sysemu.h"
#include "qemu/notify.h"
#define MAX_SCSI_DEVS 255
@@ -50,17 +51,25 @@ struct SCSIRequest {
uint32_t tag;
uint32_t lun;
uint32_t status;
void *hba_private;
size_t resid;
SCSICommand cmd;
NotifierList cancel_notifiers;
/* Note:
* - fields before sense are initialized by scsi_req_alloc;
* - sense[] is uninitialized;
* - fields after sense are memset to 0 by scsi_req_alloc.
* */
uint8_t sense[SCSI_SENSE_BUF_SIZE];
uint32_t sense_len;
bool enqueued;
bool io_canceled;
bool retry;
bool dma_started;
BlockDriverAIOCB *aiocb;
QEMUSGList *sg;
bool dma_started;
uint8_t sense[SCSI_SENSE_BUF_SIZE];
uint32_t sense_len;
bool enqueued;
bool io_canceled;
bool retry;
void *hba_private;
QTAILQ_ENTRY(SCSIRequest) next;
};
@@ -123,7 +132,6 @@ struct SCSIReqOps {
int32_t (*send_command)(SCSIRequest *req, uint8_t *buf);
void (*read_data)(SCSIRequest *req);
void (*write_data)(SCSIRequest *req);
void (*cancel_io)(SCSIRequest *req);
uint8_t *(*get_buf)(SCSIRequest *req);
void (*save_request)(QEMUFile *f, SCSIRequest *req);
@@ -258,8 +266,9 @@ void scsi_req_data(SCSIRequest *req, int len);
void scsi_req_complete(SCSIRequest *req, int status);
uint8_t *scsi_req_get_buf(SCSIRequest *req);
int scsi_req_get_sense(SCSIRequest *req, uint8_t *buf, int len);
void scsi_req_abort(SCSIRequest *req, int status);
void scsi_req_cancel_complete(SCSIRequest *req);
void scsi_req_cancel(SCSIRequest *req);
void scsi_req_cancel_async(SCSIRequest *req, Notifier *notifier);
void scsi_req_retry(SCSIRequest *req);
void scsi_device_purge_requests(SCSIDevice *sdev, SCSISense sense);
void scsi_device_set_ua(SCSIDevice *sdev, SCSISense sense);
include/hw/virtio/virtio-scsi.h
+87 -1
View File
@@ -17,6 +17,8 @@
#include "hw/virtio/virtio.h"
#include "hw/pci/pci.h"
#include "hw/scsi/scsi.h"
#include "sysemu/iothread.h"
#include "hw/virtio/dataplane/vring.h"
#define TYPE_VIRTIO_SCSI_COMMON "virtio-scsi-common"
#define VIRTIO_SCSI_COMMON(obj) \
@@ -151,8 +153,18 @@ struct VirtIOSCSIConf {
uint32_t cmd_per_lun;
char *vhostfd;
char *wwpn;
IOThread *iothread;
};
struct VirtIOSCSI;
typedef struct {
struct VirtIOSCSI *parent;
Vring vring;
EventNotifier host_notifier;
EventNotifier guest_notifier;
} VirtIOSCSIVring;
typedef struct VirtIOSCSICommon {
VirtIODevice parent_obj;
VirtIOSCSIConf conf;
@@ -164,14 +176,74 @@ typedef struct VirtIOSCSICommon {
VirtQueue **cmd_vqs;
} VirtIOSCSICommon;
typedef struct {
typedef struct VirtIOSCSI {
VirtIOSCSICommon parent_obj;
SCSIBus bus;
int resetting;
bool events_dropped;
/* Fields for dataplane below */
AioContext *ctx; /* one iothread per virtio-scsi-pci for now */
/* Vring is used instead of vq in dataplane code, because of the underlying
* memory layer thread safety */
VirtIOSCSIVring *ctrl_vring;
VirtIOSCSIVring *event_vring;
VirtIOSCSIVring **cmd_vrings;
bool dataplane_started;
bool dataplane_starting;
bool dataplane_stopping;
bool dataplane_disabled;
Notifier migration_state_notifier;
} VirtIOSCSI;
typedef struct VirtIOSCSIReq {
VirtIOSCSI *dev;
VirtQueue *vq;
QEMUSGList qsgl;
QEMUIOVector resp_iov;
/* Note:
* - fields before elem are initialized by virtio_scsi_init_req;
* - elem is uninitialized at the time of allocation.
* - fields after elem are zeroed by virtio_scsi_init_req.
* */
VirtQueueElement elem;
/* Set by dataplane code. */
VirtIOSCSIVring *vring;
union {
/* Used for two-stage request submission */
QTAILQ_ENTRY(VirtIOSCSIReq) next;
/* Used for cancellation of request during TMFs */
int remaining;
};
SCSIRequest *sreq;
size_t resp_size;
enum SCSIXferMode mode;
union {
VirtIOSCSICmdResp cmd;
VirtIOSCSICtrlTMFResp tmf;
VirtIOSCSICtrlANResp an;
VirtIOSCSIEvent event;
} resp;
union {
struct {
VirtIOSCSICmdReq cmd;
uint8_t cdb[];
} QEMU_PACKED;
VirtIOSCSICtrlTMFReq tmf;
VirtIOSCSICtrlANReq an;
} req;
} VirtIOSCSIReq;
QEMU_BUILD_BUG_ON(offsetof(VirtIOSCSIReq, req.cdb) !=
offsetof(VirtIOSCSIReq, req.cmd) + sizeof(VirtIOSCSICmdReq));
#define DEFINE_VIRTIO_SCSI_PROPERTIES(_state, _conf_field) \
DEFINE_PROP_UINT32("num_queues", _state, _conf_field.num_queues, 1), \
DEFINE_PROP_UINT32("max_sectors", _state, _conf_field.max_sectors, 0xFFFF),\
@@ -192,5 +264,19 @@ void virtio_scsi_common_realize(DeviceState *dev, Error **errp,
HandleOutput cmd);
void virtio_scsi_common_unrealize(DeviceState *dev, Error **errp);
void virtio_scsi_handle_ctrl_req(VirtIOSCSI *s, VirtIOSCSIReq *req);
bool virtio_scsi_handle_cmd_req_prepare(VirtIOSCSI *s, VirtIOSCSIReq *req);
void virtio_scsi_handle_cmd_req_submit(VirtIOSCSI *s, VirtIOSCSIReq *req);
VirtIOSCSIReq *virtio_scsi_init_req(VirtIOSCSI *s, VirtQueue *vq);
void virtio_scsi_free_req(VirtIOSCSIReq *req);
void virtio_scsi_push_event(VirtIOSCSI *s, SCSIDevice *dev,
uint32_t event, uint32_t reason);
void virtio_scsi_set_iothread(VirtIOSCSI *s, IOThread *iothread);
void virtio_scsi_dataplane_start(VirtIOSCSI *s);
void virtio_scsi_dataplane_stop(VirtIOSCSI *s);
void virtio_scsi_vring_push_notify(VirtIOSCSIReq *req);
VirtIOSCSIReq *virtio_scsi_pop_req_vring(VirtIOSCSI *s,
VirtIOSCSIVring *vring);
#endif /* _QEMU_VIRTIO_SCSI_H */
include/hw/virtio/virtio.h
+3
View File
@@ -161,6 +161,9 @@ typedef struct VirtioDeviceClass {
int (*load)(VirtIODevice *vdev, QEMUFile *f, int version_id);
} VirtioDeviceClass;
void virtio_instance_init_common(Object *proxy_obj, void *data,
size_t vdev_size, const char *vdev_name);
void virtio_init(VirtIODevice *vdev, const char *name,
uint16_t device_id, size_t config_size);
void virtio_cleanup(VirtIODevice *vdev);
include/qemu/bitmap.h
+11 -2
View File
@@ -88,10 +88,19 @@ int slow_bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1,
int slow_bitmap_intersects(const unsigned long *bitmap1,
const unsigned long *bitmap2, long bits);
static inline unsigned long *bitmap_new(long nbits)
static inline unsigned long *bitmap_try_new(long nbits)
{
long len = BITS_TO_LONGS(nbits) * sizeof(unsigned long);
return g_malloc0(len);
return g_try_malloc0(len);
}
static inline unsigned long *bitmap_new(long nbits)
{
unsigned long *ptr = bitmap_try_new(nbits);
if (ptr == NULL) {
abort();
}
return ptr;
}
static inline void bitmap_zero(unsigned long *dst, long nbits)