[Qemu-devel] [PATCH v10 00/11] virtio-blk refactoring.

[Qemu-devel] [PATCH v10 00/11] virtio-blk refactoring.

[fred.konrad]

From: KONRAD Frederic <fred.konrad@greensocs.com>

This is the next part of virtio-refactoring.

Basically it creates virtio-blk device which extends virtio-device.
Then a virtio-blk can be connected on a virtio-bus.
virtio-blk-pci, virtio-blk-s390x, virtio-blk-ccw are created too, they extend
respectively virtio-pci, virtio-s390-device, virtio-ccw-device and have a
virtio-blk.

You can checkout my branch here:

git://project.greensocs.com/qemu-virtio.git virtio-blk-v10

I made basic tests (with linux guests) on:
 * qemu-system-i386
 * qemu-system-s390x

Cornelia made virtio-ccw test, and Stefan tried dataplane.

Changes v9 -> v10:
    * Fix the hot unplug issue spotted by Anthony.
Changes v8 -> v9:
    * Fix the hot unplug issue spotted by Cornelia.
Changes v7 -> v8:
    * Fix the allow_hotplug assertion spotted by Anthony.
    * Attached the make virtio device's structures public (v4).
Changes v6 -> v7:
    * Fix the DEFINE_VIRTIO_BLK_PROPERTIES macro issue spotted by Peter.

Thanks,

Fred

KONRAD Frederic (11):
  virtio: make virtio device's structures public.
  virtio-x-bus: fix allow_hotplug assertion.
  virtio-pci: fix hot unplug.
  virtio-blk: don't use pointer for configuration.
  virtio-blk: add the virtio-blk device.
  virtio-blk-pci: switch to new API.
  virtio-blk-s390: switch to the new API.
  virtio-blk-ccw switch to new API.
  virtio-blk: cleanup: init and exit functions.
  virtio-blk: cleanup: QOM cast
  virtio-blk: cleanup: remove qdev field.

 hw/s390x/s390-virtio-bus.c |  32 ++++++----
 hw/s390x/s390-virtio-bus.h |  13 +++-
 hw/s390x/virtio-ccw.c      |  35 ++++++-----
 hw/s390x/virtio-ccw.h      |  14 ++++-
 hw/virtio-balloon.c        |  15 -----
 hw/virtio-balloon.h        |  14 +++++
 hw/virtio-blk.c            | 151 +++++++++++++++++++++++++--------------------
 hw/virtio-blk.h            |  39 ++++++++++++
 hw/virtio-net.c            |  50 ---------------
 hw/virtio-net.h            |  50 +++++++++++++++
 hw/virtio-pci.c            | 142 ++++++++++++++++++------------------------
 hw/virtio-pci.h            |  15 ++++-
 hw/virtio-rng.c            |  19 ------
 hw/virtio-rng.h            |  19 ++++++
 hw/virtio-scsi.c           |  15 -----
 hw/virtio-scsi.h           |  16 +++++
 hw/virtio-serial-bus.c     |  41 ------------
 hw/virtio-serial.h         |  41 ++++++++++++
 hw/virtio.h                |   2 -
 19 files changed, 401 insertions(+), 322 deletions(-)

-- 
1.7.11.7

[Qemu-devel] [PATCH v10 01/11] virtio: make virtio device's structures public.

[fred.konrad]

From: KONRAD Frederic <fred.konrad@greensocs.com>

These structures must be made public to avoid two memory allocations for
refactored virtio devices.

Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

Changes V4 <- V3:
   * Rebased on current git.

Changes V3 <- V2:
    * Style correction spotted by Andreas (virtio-scsi.h).
    * Style correction for virtio-net.h.

Changes V2 <- V1:
    * Move the dataplane include into the header (virtio-blk).
---
 hw/virtio-balloon.c    | 15 ---------------
 hw/virtio-balloon.h    | 14 ++++++++++++++
 hw/virtio-blk.c        | 20 --------------------
 hw/virtio-blk.h        | 19 +++++++++++++++++++
 hw/virtio-net.c        | 50 --------------------------------------------------
 hw/virtio-net.h        | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 hw/virtio-rng.c        | 19 -------------------
 hw/virtio-rng.h        | 19 +++++++++++++++++++
 hw/virtio-scsi.c       | 15 ---------------
 hw/virtio-scsi.h       | 16 ++++++++++++++++
 hw/virtio-serial-bus.c | 41 -----------------------------------------
 hw/virtio-serial.h     | 41 +++++++++++++++++++++++++++++++++++++++++
 12 files changed, 159 insertions(+), 160 deletions(-)

diff --git a/hw/virtio-balloon.c b/hw/virtio-balloon.c
index 6bfcddc..54a4372 100644
--- a/hw/virtio-balloon.c
+++ b/hw/virtio-balloon.c
@@ -29,21 +29,6 @@
 #include <sys/mman.h>
 #endif
 
-typedef struct VirtIOBalloon
-{
-    VirtIODevice vdev;
-    VirtQueue *ivq, *dvq, *svq;
-    uint32_t num_pages;
-    uint32_t actual;
-    uint64_t stats[VIRTIO_BALLOON_S_NR];
-    VirtQueueElement stats_vq_elem;
-    size_t stats_vq_offset;
-    QEMUTimer *stats_timer;
-    int64_t stats_last_update;
-    int64_t stats_poll_interval;
-    DeviceState *qdev;
-} VirtIOBalloon;
-
 static VirtIOBalloon *to_virtio_balloon(VirtIODevice *vdev)
 {
     return (VirtIOBalloon *)vdev;
diff --git a/hw/virtio-balloon.h b/hw/virtio-balloon.h
index f37f31b..b007042 100644
--- a/hw/virtio-balloon.h
+++ b/hw/virtio-balloon.h
@@ -52,4 +52,18 @@ typedef struct VirtIOBalloonStat {
     uint64_t val;
 } QEMU_PACKED VirtIOBalloonStat;
 
+typedef struct VirtIOBalloon {
+    VirtIODevice vdev;
+    VirtQueue *ivq, *dvq, *svq;
+    uint32_t num_pages;
+    uint32_t actual;
+    uint64_t stats[VIRTIO_BALLOON_S_NR];
+    VirtQueueElement stats_vq_elem;
+    size_t stats_vq_offset;
+    QEMUTimer *stats_timer;
+    int64_t stats_last_update;
+    int64_t stats_poll_interval;
+    DeviceState *qdev;
+} VirtIOBalloon;
+
 #endif
diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c
index 6b69236..6714b01 100644
--- a/hw/virtio-blk.c
+++ b/hw/virtio-blk.c
@@ -17,31 +17,11 @@
 #include "hw/block-common.h"
 #include "sysemu/blockdev.h"
 #include "hw/virtio-blk.h"
-#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
-#include "dataplane/virtio-blk.h"
-#endif
 #include "hw/scsi-defs.h"
 #ifdef __linux__
 # include <scsi/sg.h>
 #endif
 
-typedef struct VirtIOBlock
-{
-    VirtIODevice vdev;
-    BlockDriverState *bs;
-    VirtQueue *vq;
-    void *rq;
-    QEMUBH *bh;
-    BlockConf *conf;
-    VirtIOBlkConf *blk;
-    unsigned short sector_mask;
-    DeviceState *qdev;
-    VMChangeStateEntry *change;
-#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
-    VirtIOBlockDataPlane *dataplane;
-#endif
-} VirtIOBlock;
-
 static VirtIOBlock *to_virtio_blk(VirtIODevice *vdev)
 {
     return (VirtIOBlock *)vdev;
diff --git a/hw/virtio-blk.h b/hw/virtio-blk.h
index 7ef2f35..19ec569 100644
--- a/hw/virtio-blk.h
+++ b/hw/virtio-blk.h
@@ -16,6 +16,9 @@
 
 #include "hw/virtio.h"
 #include "hw/block-common.h"
+#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
+#include "dataplane/virtio-blk.h"
+#endif
 
 /* from Linux's linux/virtio_blk.h */
 
@@ -108,6 +111,22 @@ struct VirtIOBlkConf
     uint32_t data_plane;
 };
 
+typedef struct VirtIOBlock {
+    VirtIODevice vdev;
+    BlockDriverState *bs;
+    VirtQueue *vq;
+    void *rq;
+    QEMUBH *bh;
+    BlockConf *conf;
+    VirtIOBlkConf *blk;
+    unsigned short sector_mask;
+    DeviceState *qdev;
+    VMChangeStateEntry *change;
+#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
+    VirtIOBlockDataPlane *dataplane;
+#endif
+} VirtIOBlock;
+
 #define DEFINE_VIRTIO_BLK_FEATURES(_state, _field) \
         DEFINE_VIRTIO_COMMON_FEATURES(_state, _field)
 
diff --git a/hw/virtio-net.c b/hw/virtio-net.c
index 8c9d871..4bb49eb 100644
--- a/hw/virtio-net.c
+++ b/hw/virtio-net.c
@@ -26,56 +26,6 @@
 #define MAC_TABLE_ENTRIES    64
 #define MAX_VLAN    (1 << 12)   /* Per 802.1Q definition */
 
-typedef struct VirtIONetQueue {
-    VirtQueue *rx_vq;
-    VirtQueue *tx_vq;
-    QEMUTimer *tx_timer;
-    QEMUBH *tx_bh;
-    int tx_waiting;
-    struct {
-        VirtQueueElement elem;
-        ssize_t len;
-    } async_tx;
-    struct VirtIONet *n;
-} VirtIONetQueue;
-
-typedef struct VirtIONet
-{
-    VirtIODevice vdev;
-    uint8_t mac[ETH_ALEN];
-    uint16_t status;
-    VirtIONetQueue *vqs;
-    VirtQueue *ctrl_vq;
-    NICState *nic;
-    uint32_t tx_timeout;
-    int32_t tx_burst;
-    uint32_t has_vnet_hdr;
-    size_t host_hdr_len;
-    size_t guest_hdr_len;
-    uint8_t has_ufo;
-    int mergeable_rx_bufs;
-    uint8_t promisc;
-    uint8_t allmulti;
-    uint8_t alluni;
-    uint8_t nomulti;
-    uint8_t nouni;
-    uint8_t nobcast;
-    uint8_t vhost_started;
-    struct {
-        int in_use;
-        int first_multi;
-        uint8_t multi_overflow;
-        uint8_t uni_overflow;
-        uint8_t *macs;
-    } mac_table;
-    uint32_t *vlans;
-    DeviceState *qdev;
-    int multiqueue;
-    uint16_t max_queues;
-    uint16_t curr_queues;
-    size_t config_size;
-} VirtIONet;
-
 /*
  * Calculate the number of bytes up to and including the given 'field' of
  * 'container'.
diff --git a/hw/virtio-net.h b/hw/virtio-net.h
index 0c83ca5..4d1a8cd 100644
--- a/hw/virtio-net.h
+++ b/hw/virtio-net.h
@@ -134,6 +134,56 @@ struct virtio_net_ctrl_mac {
     uint32_t entries;
     uint8_t macs[][ETH_ALEN];
 };
+
+typedef struct VirtIONetQueue {
+    VirtQueue *rx_vq;
+    VirtQueue *tx_vq;
+    QEMUTimer *tx_timer;
+    QEMUBH *tx_bh;
+    int tx_waiting;
+    struct {
+        VirtQueueElement elem;
+        ssize_t len;
+    } async_tx;
+    struct VirtIONet *n;
+} VirtIONetQueue;
+
+typedef struct VirtIONet {
+    VirtIODevice vdev;
+    uint8_t mac[ETH_ALEN];
+    uint16_t status;
+    VirtIONetQueue *vqs;
+    VirtQueue *ctrl_vq;
+    NICState *nic;
+    uint32_t tx_timeout;
+    int32_t tx_burst;
+    uint32_t has_vnet_hdr;
+    size_t host_hdr_len;
+    size_t guest_hdr_len;
+    uint8_t has_ufo;
+    int mergeable_rx_bufs;
+    uint8_t promisc;
+    uint8_t allmulti;
+    uint8_t alluni;
+    uint8_t nomulti;
+    uint8_t nouni;
+    uint8_t nobcast;
+    uint8_t vhost_started;
+    struct {
+        int in_use;
+        int first_multi;
+        uint8_t multi_overflow;
+        uint8_t uni_overflow;
+        uint8_t *macs;
+    } mac_table;
+    uint32_t *vlans;
+    DeviceState *qdev;
+    int multiqueue;
+    uint16_t max_queues;
+    uint16_t curr_queues;
+    size_t config_size;
+} VirtIONet;
+
 #define VIRTIO_NET_CTRL_MAC    1
  #define VIRTIO_NET_CTRL_MAC_TABLE_SET        0
  #define VIRTIO_NET_CTRL_MAC_ADDR_SET         1
diff --git a/hw/virtio-rng.c b/hw/virtio-rng.c
index 54c1421..fa8e8f3 100644
--- a/hw/virtio-rng.c
+++ b/hw/virtio-rng.c
@@ -16,25 +16,6 @@
 #include "hw/virtio-rng.h"
 #include "qemu/rng.h"
 
-typedef struct VirtIORNG {
-    VirtIODevice vdev;
-
-    DeviceState *qdev;
-
-    /* Only one vq - guest puts buffer(s) on it when it needs entropy */
-    VirtQueue *vq;
-
-    VirtIORNGConf *conf;
-
-    RngBackend *rng;
-
-    /* We purposefully don't migrate this state.  The quota will reset on the
-     * destination as a result.  Rate limiting is host state, not guest state.
-     */
-    QEMUTimer *rate_limit_timer;
-    int64_t quota_remaining;
-} VirtIORNG;
-
 static bool is_guest_ready(VirtIORNG *vrng)
 {
     if (virtio_queue_ready(vrng->vq)
diff --git a/hw/virtio-rng.h b/hw/virtio-rng.h
index f42d748..3711c97 100644
--- a/hw/virtio-rng.h
+++ b/hw/virtio-rng.h
@@ -25,4 +25,23 @@ struct VirtIORNGConf {
     RndRandom *default_backend;
 };
 
+typedef struct VirtIORNG {
+    VirtIODevice vdev;
+
+    DeviceState *qdev;
+
+    /* Only one vq - guest puts buffer(s) on it when it needs entropy */
+    VirtQueue *vq;
+
+    VirtIORNGConf *conf;
+
+    RngBackend *rng;
+
+    /* We purposefully don't migrate this state.  The quota will reset on the
+     * destination as a result.  Rate limiting is host state, not guest state.
+     */
+    QEMUTimer *rate_limit_timer;
+    int64_t quota_remaining;
+} VirtIORNG;
+
 #endif
diff --git a/hw/virtio-scsi.c b/hw/virtio-scsi.c
index 72cc519..8620712 100644
--- a/hw/virtio-scsi.c
+++ b/hw/virtio-scsi.c
@@ -130,21 +130,6 @@ typedef struct {
     uint32_t max_lun;
 } QEMU_PACKED VirtIOSCSIConfig;
 
-typedef struct {
-    VirtIODevice vdev;
-    DeviceState *qdev;
-    VirtIOSCSIConf *conf;
-
-    SCSIBus bus;
-    uint32_t sense_size;
-    uint32_t cdb_size;
-    int resetting;
-    bool events_dropped;
-    VirtQueue *ctrl_vq;
-    VirtQueue *event_vq;
-    VirtQueue *cmd_vqs[0];
-} VirtIOSCSI;
-
 typedef struct VirtIOSCSIReq {
     VirtIOSCSI *dev;
     VirtQueue *vq;
diff --git a/hw/virtio-scsi.h b/hw/virtio-scsi.h
index 81b3279..ccf1e42 100644
--- a/hw/virtio-scsi.h
+++ b/hw/virtio-scsi.h
@@ -16,6 +16,7 @@
 
 #include "hw/virtio.h"
 #include "hw/pci/pci.h"
+#include "hw/scsi.h"
 
 /* The ID for virtio_scsi */
 #define VIRTIO_ID_SCSI  8
@@ -31,6 +32,21 @@ struct VirtIOSCSIConf {
     uint32_t cmd_per_lun;
 };
 
+typedef struct VirtIOSCSI {
+    VirtIODevice vdev;
+    DeviceState *qdev;
+    VirtIOSCSIConf *conf;
+
+    SCSIBus bus;
+    uint32_t sense_size;
+    uint32_t cdb_size;
+    int resetting;
+    bool events_dropped;
+    VirtQueue *ctrl_vq;
+    VirtQueue *event_vq;
+    VirtQueue *cmd_vqs[0];
+} VirtIOSCSI;
+
 #define DEFINE_VIRTIO_SCSI_PROPERTIES(_state, _features_field, _conf_field) \
     DEFINE_VIRTIO_COMMON_FEATURES(_state, _features_field), \
     DEFINE_PROP_UINT32("num_queues", _state, _conf_field.num_queues, 1), \
diff --git a/hw/virtio-serial-bus.c b/hw/virtio-serial-bus.c
index 7d0515f..ab7168e 100644
--- a/hw/virtio-serial-bus.c
+++ b/hw/virtio-serial-bus.c
@@ -25,47 +25,6 @@
 #include "trace.h"
 #include "hw/virtio-serial.h"
 
-/* The virtio-serial bus on top of which the ports will ride as devices */
-struct VirtIOSerialBus {
-    BusState qbus;
-
-    /* This is the parent device that provides the bus for ports. */
-    VirtIOSerial *vser;
-
-    /* The maximum number of ports that can ride on top of this bus */
-    uint32_t max_nr_ports;
-};
-
-typedef struct VirtIOSerialPostLoad {
-    QEMUTimer *timer;
-    uint32_t nr_active_ports;
-    struct {
-        VirtIOSerialPort *port;
-        uint8_t host_connected;
-    } *connected;
-} VirtIOSerialPostLoad;
-
-struct VirtIOSerial {
-    VirtIODevice vdev;
-
-    VirtQueue *c_ivq, *c_ovq;
-    /* Arrays of ivqs and ovqs: one per port */
-    VirtQueue **ivqs, **ovqs;
-
-    VirtIOSerialBus bus;
-
-    DeviceState *qdev;
-
-    QTAILQ_HEAD(, VirtIOSerialPort) ports;
-
-    /* bitmap for identifying active ports */
-    uint32_t *ports_map;
-
-    struct virtio_console_config config;
-
-    struct VirtIOSerialPostLoad *post_load;
-};
-
 static VirtIOSerialPort *find_port_by_id(VirtIOSerial *vser, uint32_t id)
 {
     VirtIOSerialPort *port;
diff --git a/hw/virtio-serial.h b/hw/virtio-serial.h
index d2d9fb7..484dcfe 100644
--- a/hw/virtio-serial.h
+++ b/hw/virtio-serial.h
@@ -173,6 +173,47 @@ struct VirtIOSerialPort {
     bool throttled;
 };
 
+/* The virtio-serial bus on top of which the ports will ride as devices */
+struct VirtIOSerialBus {
+    BusState qbus;
+
+    /* This is the parent device that provides the bus for ports. */
+    VirtIOSerial *vser;
+
+    /* The maximum number of ports that can ride on top of this bus */
+    uint32_t max_nr_ports;
+};
+
+typedef struct VirtIOSerialPostLoad {
+    QEMUTimer *timer;
+    uint32_t nr_active_ports;
+    struct {
+        VirtIOSerialPort *port;
+        uint8_t host_connected;
+    } *connected;
+} VirtIOSerialPostLoad;
+
+struct VirtIOSerial {
+    VirtIODevice vdev;
+
+    VirtQueue *c_ivq, *c_ovq;
+    /* Arrays of ivqs and ovqs: one per port */
+    VirtQueue **ivqs, **ovqs;
+
+    VirtIOSerialBus bus;
+
+    DeviceState *qdev;
+
+    QTAILQ_HEAD(, VirtIOSerialPort) ports;
+
+    /* bitmap for identifying active ports */
+    uint32_t *ports_map;
+
+    struct virtio_console_config config;
+
+    struct VirtIOSerialPostLoad *post_load;
+};
+
 /* Interface to the virtio-serial bus */
 
 /*
-- 
1.7.11.7

[Qemu-devel] [PATCH v10 02/11] virtio-x-bus: fix allow_hotplug assertion.

[fred.konrad]

From: KONRAD Frederic <fred.konrad@greensocs.com>

This set allow_hotplug for each existing virtio-x-bus, allowing the
refactored devices to be hot pluggable.

Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
---
 hw/s390x/s390-virtio-bus.c | 2 +-
 hw/s390x/virtio-ccw.c      | 2 +-
 hw/virtio-pci.c            | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/hw/s390x/s390-virtio-bus.c b/hw/s390x/s390-virtio-bus.c
index d9b7f83..8d4fd72 100644
--- a/hw/s390x/s390-virtio-bus.c
+++ b/hw/s390x/s390-virtio-bus.c
@@ -588,7 +588,7 @@ void virtio_s390_bus_new(VirtioBusState *bus, VirtIOS390Device *dev)
     BusState *qbus;
     qbus_create_inplace((BusState *)bus, TYPE_VIRTIO_S390_BUS, qdev, NULL);
     qbus = BUS(bus);
-    qbus->allow_hotplug = 0;
+    qbus->allow_hotplug = 1;
 }
 
 static void virtio_s390_bus_class_init(ObjectClass *klass, void *data)
diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
index d4361f6..d80de67 100644
--- a/hw/s390x/virtio-ccw.c
+++ b/hw/s390x/virtio-ccw.c
@@ -982,7 +982,7 @@ void virtio_ccw_bus_new(VirtioBusState *bus, VirtioCcwDevice *dev)
 
     qbus_create_inplace((BusState *)bus, TYPE_VIRTIO_CCW_BUS, qdev, NULL);
     qbus = BUS(bus);
-    qbus->allow_hotplug = 0;
+    qbus->allow_hotplug = 1;
 }
 
 static void virtio_ccw_bus_class_init(ObjectClass *klass, void *data)
diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c
index 39c1966..c795cc6 100644
--- a/hw/virtio-pci.c
+++ b/hw/virtio-pci.c
@@ -1484,7 +1484,7 @@ void virtio_pci_bus_new(VirtioBusState *bus, VirtIOPCIProxy *dev)
     BusState *qbus;
     qbus_create_inplace((BusState *)bus, TYPE_VIRTIO_PCI_BUS, qdev, NULL);
     qbus = BUS(bus);
-    qbus->allow_hotplug = 0;
+    qbus->allow_hotplug = 1;
 }
 
 static void virtio_pci_bus_class_init(ObjectClass *klass, void *data)
-- 
1.7.11.7

[Qemu-devel] [PATCH v10 03/11] virtio-pci: fix hot unplug.

[fred.konrad]

From: KONRAD Frederic <fred.konrad@greensocs.com>

Hot unplug failed because it tried to free the virtio device two times.

This fix the issue by removing the call to virtio_bus_destroy_device.

Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
---
 hw/virtio-pci.c | 13 +------------
 1 file changed, 1 insertion(+), 12 deletions(-)

diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c
index c795cc6..f0dd823 100644
--- a/hw/virtio-pci.c
+++ b/hw/virtio-pci.c
@@ -1412,13 +1412,6 @@ static void virtio_pci_device_plugged(DeviceState *d)
                                                       proxy->host_features);
 }
 
-/* This is called by virtio-bus just before the device is unplugged. */
-static void virtio_pci_device_unplug(DeviceState *d)
-{
-    VirtIOPCIProxy *dev = VIRTIO_PCI(d);
-    virtio_pci_stop_ioeventfd(dev);
-}
-
 static int virtio_pci_init(PCIDevice *pci_dev)
 {
     VirtIOPCIProxy *dev = VIRTIO_PCI(pci_dev);
@@ -1433,10 +1426,7 @@ static int virtio_pci_init(PCIDevice *pci_dev)
 static void virtio_pci_exit(PCIDevice *pci_dev)
 {
     VirtIOPCIProxy *proxy = VIRTIO_PCI(pci_dev);
-    VirtioBusState *bus = VIRTIO_BUS(&proxy->bus);
-    BusState *qbus = BUS(&proxy->bus);
-    virtio_bus_destroy_device(bus);
-    qbus_free(qbus);
+    virtio_pci_stop_ioeventfd(proxy);
     virtio_exit_pci(pci_dev);
 }
 
@@ -1503,7 +1493,6 @@ static void virtio_pci_bus_class_init(ObjectClass *klass, void *data)
     k->set_guest_notifiers = virtio_pci_set_guest_notifiers;
     k->vmstate_change = virtio_pci_vmstate_change;
     k->device_plugged = virtio_pci_device_plugged;
-    k->device_unplug = virtio_pci_device_unplug;
 }
 
 static const TypeInfo virtio_pci_bus_info = {
-- 
1.7.11.7

[Qemu-devel] [PATCH v10 04/11] virtio-blk: don't use pointer for configuration.

[fred.konrad]

From: KONRAD Frederic <fred.konrad@greensocs.com>

The configuration field must not be a pointer as it will be used for virtio-blk
properties. So *blk is replaced by blk in VirtIOBlock structure.

Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/virtio-blk.c | 8 ++++----
 hw/virtio-blk.h | 2 +-
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c
index 6714b01..908c316 100644
--- a/hw/virtio-blk.c
+++ b/hw/virtio-blk.c
@@ -151,7 +151,7 @@ static void virtio_blk_handle_scsi(VirtIOBlockReq *req)
      */
     req->scsi = (void *)req->elem.in_sg[req->elem.in_num - 2].iov_base;
 
-    if (!req->dev->blk->scsi) {
+    if (!req->dev->blk.scsi) {
         status = VIRTIO_BLK_S_UNSUPP;
         goto fail;
     }
@@ -371,7 +371,7 @@ static void virtio_blk_handle_request(VirtIOBlockReq *req,
          * terminated by '\0' only when shorter than buffer.
          */
         strncpy(req->elem.in_sg[0].iov_base,
-                s->blk->serial ? s->blk->serial : "",
+                s->blk.serial ? s->blk.serial : "",
                 MIN(req->elem.in_sg[0].iov_len, VIRTIO_BLK_ID_BYTES));
         virtio_blk_req_complete(req, VIRTIO_BLK_S_OK);
         g_free(req);
@@ -534,7 +534,7 @@ static uint32_t virtio_blk_get_features(VirtIODevice *vdev, uint32_t features)
     features |= (1 << VIRTIO_BLK_F_BLK_SIZE);
     features |= (1 << VIRTIO_BLK_F_SCSI);
 
-    if (s->blk->config_wce) {
+    if (s->blk.config_wce) {
         features |= (1 << VIRTIO_BLK_F_CONFIG_WCE);
     }
     if (bdrv_enable_write_cache(s->bs))
@@ -650,7 +650,7 @@ VirtIODevice *virtio_blk_init(DeviceState *dev, VirtIOBlkConf *blk)
     s->vdev.reset = virtio_blk_reset;
     s->bs = blk->conf.bs;
     s->conf = &blk->conf;
-    s->blk = blk;
+    memcpy(&(s->blk), blk, sizeof(struct VirtIOBlkConf));
     s->rq = NULL;
     s->sector_mask = (s->conf->logical_block_size / BDRV_SECTOR_SIZE) - 1;
 
diff --git a/hw/virtio-blk.h b/hw/virtio-blk.h
index 19ec569..b704d50 100644
--- a/hw/virtio-blk.h
+++ b/hw/virtio-blk.h
@@ -118,7 +118,7 @@ typedef struct VirtIOBlock {
     void *rq;
     QEMUBH *bh;
     BlockConf *conf;
-    VirtIOBlkConf *blk;
+    VirtIOBlkConf blk;
     unsigned short sector_mask;
     DeviceState *qdev;
     VMChangeStateEntry *change;
-- 
1.7.11.7

[Qemu-devel] [PATCH v10 05/11] virtio-blk: add the virtio-blk device.

[fred.konrad]

From: KONRAD Frederic <fred.konrad@greensocs.com>

Create virtio-blk which extends virtio-device, so it can be connected on
virtio-bus.

Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/virtio-blk.c | 98 ++++++++++++++++++++++++++++++++++++++++++++++++++++++---
 hw/virtio-blk.h | 21 +++++++++++++
 hw/virtio-pci.c |  8 +----
 3 files changed, 115 insertions(+), 12 deletions(-)

diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c
index 908c316..3622bb9 100644
--- a/hw/virtio-blk.c
+++ b/hw/virtio-blk.c
@@ -21,7 +21,11 @@
 #ifdef __linux__
 # include <scsi/sg.h>
 #endif
+#include "hw/virtio-bus.h"
 
+/*
+ * Moving to QOM later in this series.
+ */
 static VirtIOBlock *to_virtio_blk(VirtIODevice *vdev)
 {
     return (VirtIOBlock *)vdev;
@@ -620,9 +624,16 @@ static const BlockDevOps virtio_block_ops = {
     .resize_cb = virtio_blk_resize,
 };
 
-VirtIODevice *virtio_blk_init(DeviceState *dev, VirtIOBlkConf *blk)
+void virtio_blk_set_conf(DeviceState *dev, VirtIOBlkConf *blk)
 {
-    VirtIOBlock *s;
+    VirtIOBlock *s = VIRTIO_BLK(dev);
+    memcpy(&(s->blk), blk, sizeof(struct VirtIOBlkConf));
+}
+
+static VirtIODevice *virtio_blk_common_init(DeviceState *dev,
+                                          VirtIOBlkConf *blk, VirtIOBlock **ps)
+{
+    VirtIOBlock *s = *ps;
     static int virtio_blk_id;
 
     if (!blk->conf.bs) {
@@ -639,9 +650,20 @@ VirtIODevice *virtio_blk_init(DeviceState *dev, VirtIOBlkConf *blk)
         return NULL;
     }
 
-    s = (VirtIOBlock *)virtio_common_init("virtio-blk", VIRTIO_ID_BLOCK,
-                                          sizeof(struct virtio_blk_config),
-                                          sizeof(VirtIOBlock));
+    /*
+     * We have two cases here: the old virtio-blk-pci device, and the
+     * refactored virtio-blk.
+     */
+    if (s == NULL) {
+        /* virtio-blk-pci */
+        s = (VirtIOBlock *)virtio_common_init("virtio-blk", VIRTIO_ID_BLOCK,
+                                              sizeof(struct virtio_blk_config),
+                                              sizeof(VirtIOBlock));
+    } else {
+        /* virtio-blk */
+        virtio_init(VIRTIO_DEVICE(s), "virtio-blk", VIRTIO_ID_BLOCK,
+                    sizeof(struct virtio_blk_config));
+    }
 
     s->vdev.get_config = virtio_blk_update_config;
     s->vdev.set_config = virtio_blk_set_config;
@@ -675,6 +697,12 @@ VirtIODevice *virtio_blk_init(DeviceState *dev, VirtIOBlkConf *blk)
     return &s->vdev;
 }
 
+VirtIODevice *virtio_blk_init(DeviceState *dev, VirtIOBlkConf *blk)
+{
+    VirtIOBlock *s = NULL;
+    return virtio_blk_common_init(dev, blk, &s);
+}
+
 void virtio_blk_exit(VirtIODevice *vdev)
 {
     VirtIOBlock *s = to_virtio_blk(vdev);
@@ -688,3 +716,63 @@ void virtio_blk_exit(VirtIODevice *vdev)
     blockdev_mark_auto_del(s->bs);
     virtio_cleanup(vdev);
 }
+
+
+static int virtio_blk_device_init(VirtIODevice *vdev)
+{
+    DeviceState *qdev = DEVICE(vdev);
+    VirtIOBlock *s = VIRTIO_BLK(vdev);
+    VirtIOBlkConf *blk = &(s->blk);
+    if (virtio_blk_common_init(qdev, blk, &s) == NULL) {
+        return -1;
+    }
+    return 0;
+}
+
+static int virtio_blk_device_exit(DeviceState *dev)
+{
+    VirtIODevice *vdev = VIRTIO_DEVICE(dev);
+    VirtIOBlock *s = VIRTIO_BLK(dev);
+#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
+    virtio_blk_data_plane_destroy(s->dataplane);
+    s->dataplane = NULL;
+#endif
+    qemu_del_vm_change_state_handler(s->change);
+    unregister_savevm(s->qdev, "virtio-blk", s);
+    blockdev_mark_auto_del(s->bs);
+    virtio_common_cleanup(vdev);
+    return 0;
+}
+
+static Property virtio_blk_properties[] = {
+    DEFINE_VIRTIO_BLK_PROPERTIES(VirtIOBlock, blk),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
+static void virtio_blk_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
+    dc->exit = virtio_blk_device_exit;
+    dc->props = virtio_blk_properties;
+    vdc->init = virtio_blk_device_init;
+    vdc->get_config = virtio_blk_update_config;
+    vdc->set_config = virtio_blk_set_config;
+    vdc->get_features = virtio_blk_get_features;
+    vdc->set_status = virtio_blk_set_status;
+    vdc->reset = virtio_blk_reset;
+}
+
+static const TypeInfo virtio_device_info = {
+    .name = TYPE_VIRTIO_BLK,
+    .parent = TYPE_VIRTIO_DEVICE,
+    .instance_size = sizeof(VirtIOBlock),
+    .class_init = virtio_blk_class_init,
+};
+
+static void virtio_register_types(void)
+{
+    type_register_static(&virtio_device_info);
+}
+
+type_init(virtio_register_types)
diff --git a/hw/virtio-blk.h b/hw/virtio-blk.h
index b704d50..a040c01 100644
--- a/hw/virtio-blk.h
+++ b/hw/virtio-blk.h
@@ -20,6 +20,10 @@
 #include "dataplane/virtio-blk.h"
 #endif
 
+#define TYPE_VIRTIO_BLK "virtio-blk"
+#define VIRTIO_BLK(obj) \
+        OBJECT_CHECK(VirtIOBlock, (obj), TYPE_VIRTIO_BLK)
+
 /* from Linux's linux/virtio_blk.h */
 
 /* The ID for virtio_block */
@@ -130,4 +134,21 @@ typedef struct VirtIOBlock {
 #define DEFINE_VIRTIO_BLK_FEATURES(_state, _field) \
         DEFINE_VIRTIO_COMMON_FEATURES(_state, _field)
 
+#ifdef __linux__
+#define DEFINE_VIRTIO_BLK_PROPERTIES(_state, _field)                          \
+        DEFINE_BLOCK_PROPERTIES(_state, _field.conf),                         \
+        DEFINE_BLOCK_CHS_PROPERTIES(_state, _field.conf),                     \
+        DEFINE_PROP_STRING("serial", _state, _field.serial),                  \
+        DEFINE_PROP_BIT("config-wce", _state, _field.config_wce, 0, true),    \
+        DEFINE_PROP_BIT("scsi", _state, _field.scsi, 0, true)
+#else
+#define DEFINE_VIRTIO_BLK_PROPERTIES(_state, _field)                          \
+        DEFINE_BLOCK_PROPERTIES(_state, _field.conf),                         \
+        DEFINE_BLOCK_CHS_PROPERTIES(_state, _field.conf),                     \
+        DEFINE_PROP_STRING("serial", _state, _field.serial),                  \
+        DEFINE_PROP_BIT("config-wce", _state, _field.config_wce, 0, true)
+#endif /* __linux__ */
+
+void virtio_blk_set_conf(DeviceState *dev, VirtIOBlkConf *blk);
+
 #endif
diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c
index f0dd823..c0b859c 100644
--- a/hw/virtio-pci.c
+++ b/hw/virtio-pci.c
@@ -1084,19 +1084,13 @@ static void virtio_rng_exit_pci(PCIDevice *pci_dev)
 
 static Property virtio_blk_properties[] = {
     DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0),
-    DEFINE_BLOCK_PROPERTIES(VirtIOPCIProxy, blk.conf),
-    DEFINE_BLOCK_CHS_PROPERTIES(VirtIOPCIProxy, blk.conf),
-    DEFINE_PROP_STRING("serial", VirtIOPCIProxy, blk.serial),
-#ifdef __linux__
-    DEFINE_PROP_BIT("scsi", VirtIOPCIProxy, blk.scsi, 0, true),
-#endif
-    DEFINE_PROP_BIT("config-wce", VirtIOPCIProxy, blk.config_wce, 0, true),
     DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
 #ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
     DEFINE_PROP_BIT("x-data-plane", VirtIOPCIProxy, blk.data_plane, 0, false),
 #endif
     DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
     DEFINE_VIRTIO_BLK_FEATURES(VirtIOPCIProxy, host_features),
+    DEFINE_VIRTIO_BLK_PROPERTIES(VirtIOPCIProxy, blk),
     DEFINE_PROP_END_OF_LIST(),
 };
 
-- 
1.7.11.7

[Qemu-devel] [PATCH v10 06/11] virtio-blk-pci: switch to new API.

[fred.konrad]

From: KONRAD Frederic <fred.konrad@greensocs.com>

Here the virtio-blk-pci is modified for the new API. The device
virtio-blk-pci extends virtio-pci. It creates and connects a virtio-blk
during the init. The properties are not changed.

Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/virtio-pci.c | 121 ++++++++++++++++++++++++++------------------------------
 hw/virtio-pci.h |  15 ++++++-
 2 files changed, 71 insertions(+), 65 deletions(-)

diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c
index c0b859c..d65f085 100644
--- a/hw/virtio-pci.c
+++ b/hw/virtio-pci.c
@@ -924,26 +924,6 @@ void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev)
     proxy->host_features = vdev->get_features(vdev, proxy->host_features);
 }
 
-static int virtio_blk_init_pci(PCIDevice *pci_dev)
-{
-    VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
-    VirtIODevice *vdev;
-
-    if (proxy->class_code != PCI_CLASS_STORAGE_SCSI &&
-        proxy->class_code != PCI_CLASS_STORAGE_OTHER)
-        proxy->class_code = PCI_CLASS_STORAGE_SCSI;
-
-    vdev = virtio_blk_init(&pci_dev->qdev, &proxy->blk);
-    if (!vdev) {
-        return -1;
-    }
-    vdev->nvectors = proxy->nvectors;
-    virtio_init_pci(proxy, vdev);
-    /* make the actual value visible */
-    proxy->nvectors = vdev->nvectors;
-    return 0;
-}
-
 static void virtio_exit_pci(PCIDevice *pci_dev)
 {
     VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
@@ -952,15 +932,6 @@ static void virtio_exit_pci(PCIDevice *pci_dev)
     msix_uninit_exclusive_bar(pci_dev);
 }
 
-static void virtio_blk_exit_pci(PCIDevice *pci_dev)
-{
-    VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
-
-    virtio_pci_stop_ioeventfd(proxy);
-    virtio_blk_exit(proxy->vdev);
-    virtio_exit_pci(pci_dev);
-}
-
 static int virtio_serial_init_pci(PCIDevice *pci_dev)
 {
     VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
@@ -1082,40 +1053,6 @@ static void virtio_rng_exit_pci(PCIDevice *pci_dev)
     virtio_exit_pci(pci_dev);
 }
 
-static Property virtio_blk_properties[] = {
-    DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0),
-    DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
-#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
-    DEFINE_PROP_BIT("x-data-plane", VirtIOPCIProxy, blk.data_plane, 0, false),
-#endif
-    DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
-    DEFINE_VIRTIO_BLK_FEATURES(VirtIOPCIProxy, host_features),
-    DEFINE_VIRTIO_BLK_PROPERTIES(VirtIOPCIProxy, blk),
-    DEFINE_PROP_END_OF_LIST(),
-};
-
-static void virtio_blk_class_init(ObjectClass *klass, void *data)
-{
-    DeviceClass *dc = DEVICE_CLASS(klass);
-    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
-
-    k->init = virtio_blk_init_pci;
-    k->exit = virtio_blk_exit_pci;
-    k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
-    k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK;
-    k->revision = VIRTIO_PCI_ABI_VERSION;
-    k->class_id = PCI_CLASS_STORAGE_SCSI;
-    dc->reset = virtio_pci_reset;
-    dc->props = virtio_blk_properties;
-}
-
-static const TypeInfo virtio_blk_info = {
-    .name          = "virtio-blk-pci",
-    .parent        = TYPE_PCI_DEVICE,
-    .instance_size = sizeof(VirtIOPCIProxy),
-    .class_init    = virtio_blk_class_init,
-};
-
 static Property virtio_net_properties[] = {
     DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, false),
     DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3),
@@ -1460,6 +1397,62 @@ static const TypeInfo virtio_pci_info = {
     .abstract      = true,
 };
 
+/* virtio-blk-pci */
+
+static Property virtio_blk_pci_properties[] = {
+    DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0),
+    DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
+                    VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
+    DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
+#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
+    DEFINE_PROP_BIT("x-data-plane", VirtIOBlkPCI, blk.data_plane, 0, false),
+#endif
+    DEFINE_VIRTIO_BLK_FEATURES(VirtIOPCIProxy, host_features),
+    DEFINE_VIRTIO_BLK_PROPERTIES(VirtIOBlkPCI, blk),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
+static int virtio_blk_pci_init(VirtIOPCIProxy *vpci_dev)
+{
+    VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(vpci_dev);
+    DeviceState *vdev = DEVICE(&dev->vdev);
+    virtio_blk_set_conf(vdev, &(dev->blk));
+    qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
+    if (qdev_init(vdev) < 0) {
+        return -1;
+    }
+    return 0;
+}
+
+static void virtio_blk_pci_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
+    PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
+
+    dc->props = virtio_blk_pci_properties;
+    k->init = virtio_blk_pci_init;
+    pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
+    pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK;
+    pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
+    pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI;
+}
+
+static void virtio_blk_pci_instance_init(Object *obj)
+{
+    VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(obj);
+    object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_BLK);
+    object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
+}
+
+static const TypeInfo virtio_blk_pci_info = {
+    .name          = TYPE_VIRTIO_BLK_PCI,
+    .parent        = TYPE_VIRTIO_PCI,
+    .instance_size = sizeof(VirtIOBlkPCI),
+    .instance_init = virtio_blk_pci_instance_init,
+    .class_init    = virtio_blk_pci_class_init,
+};
+
 /* virtio-pci-bus */
 
 void virtio_pci_bus_new(VirtioBusState *bus, VirtIOPCIProxy *dev)
@@ -1498,7 +1491,6 @@ static const TypeInfo virtio_pci_bus_info = {
 
 static void virtio_pci_register_types(void)
 {
-    type_register_static(&virtio_blk_info);
     type_register_static(&virtio_net_info);
     type_register_static(&virtio_serial_info);
     type_register_static(&virtio_balloon_info);
@@ -1509,6 +1501,7 @@ static void virtio_pci_register_types(void)
 #ifdef CONFIG_VIRTFS
     type_register_static(&virtio_9p_info);
 #endif
+    type_register_static(&virtio_blk_pci_info);
 }
 
 type_init(virtio_pci_register_types)
diff --git a/hw/virtio-pci.h b/hw/virtio-pci.h
index 2ae96f8..a9dbfff 100644
--- a/hw/virtio-pci.h
+++ b/hw/virtio-pci.h
@@ -25,6 +25,7 @@
 #include "hw/9pfs/virtio-9p-device.h"
 
 typedef struct VirtIOPCIProxy VirtIOPCIProxy;
+typedef struct VirtIOBlkPCI VirtIOBlkPCI;
 
 /* virtio-pci-bus */
 
@@ -73,7 +74,6 @@ struct VirtIOPCIProxy {
     uint32_t flags;
     uint32_t class_code;
     uint32_t nvectors;
-    VirtIOBlkConf blk;
     NICConf nic;
     uint32_t host_features;
 #ifdef CONFIG_VIRTFS
@@ -90,6 +90,19 @@ struct VirtIOPCIProxy {
     VirtioBusState bus;
 };
 
+/*
+ * virtio-blk-pci: This extends VirtioPCIProxy.
+ */
+#define TYPE_VIRTIO_BLK_PCI "virtio-blk-pci"
+#define VIRTIO_BLK_PCI(obj) \
+        OBJECT_CHECK(VirtIOBlkPCI, (obj), TYPE_VIRTIO_BLK_PCI)
+
+struct VirtIOBlkPCI {
+    VirtIOPCIProxy parent_obj;
+    VirtIOBlock vdev;
+    VirtIOBlkConf blk;
+};
+
 void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev);
 void virtio_pci_bus_new(VirtioBusState *bus, VirtIOPCIProxy *dev);
 
-- 
1.7.11.7

[Qemu-devel] [PATCH v10 07/11] virtio-blk-s390: switch to the new API.

[fred.konrad]

From: KONRAD Frederic <fred.konrad@greensocs.com>

Here the virtio-blk-s390 is modified for the new API. The device
virtio-blk-s390 extends virtio-s390-device as before. It creates and
connects a virtio-blk during the init. The properties are not modified.

Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/s390x/s390-virtio-bus.c | 30 +++++++++++++++++++-----------
 hw/s390x/s390-virtio-bus.h | 13 ++++++++++++-
 2 files changed, 31 insertions(+), 12 deletions(-)

diff --git a/hw/s390x/s390-virtio-bus.c b/hw/s390x/s390-virtio-bus.c
index 8d4fd72..76bc99a 100644
--- a/hw/s390x/s390-virtio-bus.c
+++ b/hw/s390x/s390-virtio-bus.c
@@ -162,16 +162,23 @@ static int s390_virtio_net_init(VirtIOS390Device *dev)
     return s390_virtio_device_init(dev, vdev);
 }
 
-static int s390_virtio_blk_init(VirtIOS390Device *dev)
+static int s390_virtio_blk_init(VirtIOS390Device *s390_dev)
 {
-    VirtIODevice *vdev;
-
-    vdev = virtio_blk_init((DeviceState *)dev, &dev->blk);
-    if (!vdev) {
+    VirtIOBlkS390 *dev = VIRTIO_BLK_S390(s390_dev);
+    DeviceState *vdev = DEVICE(&dev->vdev);
+    virtio_blk_set_conf(vdev, &(dev->blk));
+    qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
+    if (qdev_init(vdev) < 0) {
         return -1;
     }
+    return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
+}
 
-    return s390_virtio_device_init(dev, vdev);
+static void s390_virtio_blk_instance_init(Object *obj)
+{
+    VirtIOBlkS390 *dev = VIRTIO_BLK_S390(obj);
+    object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_BLK);
+    object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 }
 
 static int s390_virtio_serial_init(VirtIOS390Device *dev)
@@ -428,11 +435,11 @@ static const TypeInfo s390_virtio_net = {
 };
 
 static Property s390_virtio_blk_properties[] = {
-    DEFINE_BLOCK_PROPERTIES(VirtIOS390Device, blk.conf),
-    DEFINE_BLOCK_CHS_PROPERTIES(VirtIOS390Device, blk.conf),
-    DEFINE_PROP_STRING("serial", VirtIOS390Device, blk.serial),
+    DEFINE_BLOCK_PROPERTIES(VirtIOBlkS390, blk.conf),
+    DEFINE_BLOCK_CHS_PROPERTIES(VirtIOBlkS390, blk.conf),
+    DEFINE_PROP_STRING("serial", VirtIOBlkS390, blk.serial),
 #ifdef __linux__
-    DEFINE_PROP_BIT("scsi", VirtIOS390Device, blk.scsi, 0, true),
+    DEFINE_PROP_BIT("scsi", VirtIOBlkS390, blk.scsi, 0, true),
 #endif
     DEFINE_PROP_END_OF_LIST(),
 };
@@ -449,7 +456,8 @@ static void s390_virtio_blk_class_init(ObjectClass *klass, void *data)
 static const TypeInfo s390_virtio_blk = {
     .name          = "virtio-blk-s390",
     .parent        = TYPE_VIRTIO_S390_DEVICE,
-    .instance_size = sizeof(VirtIOS390Device),
+    .instance_size = sizeof(VirtIOBlkS390),
+    .instance_init = s390_virtio_blk_instance_init,
     .class_init    = s390_virtio_blk_class_init,
 };
 
diff --git a/hw/s390x/s390-virtio-bus.h b/hw/s390x/s390-virtio-bus.h
index 4aacf83..1a63411 100644
--- a/hw/s390x/s390-virtio-bus.h
+++ b/hw/s390x/s390-virtio-bus.h
@@ -89,7 +89,6 @@ struct VirtIOS390Device {
     ram_addr_t feat_offs;
     uint8_t feat_len;
     VirtIODevice *vdev;
-    VirtIOBlkConf blk;
     NICConf nic;
     uint32_t host_features;
     virtio_serial_conf serial;
@@ -120,5 +119,17 @@ VirtIOS390Device *s390_virtio_bus_find_mem(VirtIOS390Bus *bus, ram_addr_t mem);
 void s390_virtio_device_sync(VirtIOS390Device *dev);
 void s390_virtio_reset_idx(VirtIOS390Device *dev);
 
+/* virtio-blk-s390 */
+
+#define TYPE_VIRTIO_BLK_S390 "virtio-blk-s390"
+#define VIRTIO_BLK_S390(obj) \
+        OBJECT_CHECK(VirtIOBlkS390, (obj), TYPE_VIRTIO_BLK_S390)
+
+typedef struct VirtIOBlkS390 {
+    VirtIOS390Device parent_obj;
+    VirtIOBlock vdev;
+    VirtIOBlkConf blk;
+} VirtIOBlkS390;
+
 
 #endif
-- 
1.7.11.7

[Qemu-devel] [PATCH v10 08/11] virtio-blk-ccw switch to new API.

[fred.konrad]

From: KONRAD Frederic <fred.konrad@greensocs.com>

Here the virtio-ccw-s390 is modified for the new API. The device
virtio-ccw-s390 extends virtio-ccw-device as before. It creates and
connects a virtio-ccw during the init. The properties are not modified.

Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/s390x/virtio-ccw.c | 33 ++++++++++++++++++---------------
 hw/s390x/virtio-ccw.h | 14 +++++++++++++-
 2 files changed, 31 insertions(+), 16 deletions(-)

diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
index d80de67..9688835 100644
--- a/hw/s390x/virtio-ccw.c
+++ b/hw/s390x/virtio-ccw.c
@@ -570,22 +570,24 @@ static int virtio_ccw_net_exit(VirtioCcwDevice *dev)
     return virtio_ccw_exit(dev);
 }
 
-static int virtio_ccw_blk_init(VirtioCcwDevice *dev)
+static int virtio_ccw_blk_init(VirtioCcwDevice *ccw_dev)
 {
-    VirtIODevice *vdev;
-
-    vdev = virtio_blk_init((DeviceState *)dev, &dev->blk);
-    if (!vdev) {
+    VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(ccw_dev);
+    DeviceState *vdev = DEVICE(&dev->vdev);
+    virtio_blk_set_conf(vdev, &(dev->blk));
+    qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
+    if (qdev_init(vdev) < 0) {
         return -1;
     }
 
-    return virtio_ccw_device_init(dev, vdev);
+    return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
 }
 
-static int virtio_ccw_blk_exit(VirtioCcwDevice *dev)
+static void virtio_ccw_blk_instance_init(Object *obj)
 {
-    virtio_blk_exit(dev->vdev);
-    return virtio_ccw_exit(dev);
+    VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(obj);
+    object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_BLK);
+    object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 }
 
 static int virtio_ccw_serial_init(VirtioCcwDevice *dev)
@@ -754,10 +756,10 @@ static const TypeInfo virtio_ccw_net = {
 
 static Property virtio_ccw_blk_properties[] = {
     DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
-    DEFINE_BLOCK_PROPERTIES(VirtioCcwDevice, blk.conf),
-    DEFINE_PROP_STRING("serial", VirtioCcwDevice, blk.serial),
+    DEFINE_BLOCK_PROPERTIES(VirtIOBlkCcw, blk.conf),
+    DEFINE_PROP_STRING("serial", VirtIOBlkCcw, blk.serial),
 #ifdef __linux__
-    DEFINE_PROP_BIT("scsi", VirtioCcwDevice, blk.scsi, 0, true),
+    DEFINE_PROP_BIT("scsi", VirtIOBlkCcw, blk.scsi, 0, true),
 #endif
     DEFINE_VIRTIO_BLK_FEATURES(VirtioCcwDevice, host_features[0]),
     DEFINE_PROP_END_OF_LIST(),
@@ -769,15 +771,16 @@ static void virtio_ccw_blk_class_init(ObjectClass *klass, void *data)
     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
 
     k->init = virtio_ccw_blk_init;
-    k->exit = virtio_ccw_blk_exit;
+    k->exit = virtio_ccw_exit;
     dc->reset = virtio_ccw_reset;
     dc->props = virtio_ccw_blk_properties;
 }
 
 static const TypeInfo virtio_ccw_blk = {
-    .name          = "virtio-blk-ccw",
+    .name          = TYPE_VIRTIO_BLK_CCW,
     .parent        = TYPE_VIRTIO_CCW_DEVICE,
-    .instance_size = sizeof(VirtioCcwDevice),
+    .instance_size = sizeof(VirtIOBlkCcw),
+    .instance_init = virtio_ccw_blk_instance_init,
     .class_init    = virtio_ccw_blk_class_init,
 };
 
diff --git a/hw/s390x/virtio-ccw.h b/hw/s390x/virtio-ccw.h
index 88c46c0..3993bc5 100644
--- a/hw/s390x/virtio-ccw.h
+++ b/hw/s390x/virtio-ccw.h
@@ -72,7 +72,6 @@ struct VirtioCcwDevice {
     SubchDev *sch;
     VirtIODevice *vdev;
     char *bus_id;
-    VirtIOBlkConf blk;
     NICConf nic;
     uint32_t host_features[VIRTIO_CCW_FEATURE_SIZE];
     virtio_serial_conf serial;
@@ -94,6 +93,19 @@ typedef struct VirtualCssBus {
 #define VIRTUAL_CSS_BUS(obj) \
      OBJECT_CHECK(VirtualCssBus, (obj), TYPE_VIRTUAL_CSS_BUS)
 
+/* virtio-blk-ccw */
+
+#define TYPE_VIRTIO_BLK_CCW "virtio-blk-ccw"
+#define VIRTIO_BLK_CCW(obj) \
+        OBJECT_CHECK(VirtIOBlkCcw, (obj), TYPE_VIRTIO_BLK_CCW)
+
+typedef struct VirtIOBlkCcw {
+    VirtioCcwDevice parent_obj;
+    VirtIOBlock vdev;
+    VirtIOBlkConf blk;
+} VirtIOBlkCcw;
+
+
 VirtualCssBus *virtual_css_bus_init(void);
 void virtio_ccw_device_update_status(SubchDev *sch);
 VirtIODevice *virtio_ccw_get_vdev(SubchDev *sch);
-- 
1.7.11.7

[Qemu-devel] [PATCH v10 09/11] virtio-blk: cleanup: init and exit functions.

[fred.konrad]

From: KONRAD Frederic <fred.konrad@greensocs.com>

As all virtio-blk-* are switched to the new API, we can remove the separate
init/exit for the old API.

Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/virtio-blk.c | 85 ++++++++++++++-------------------------------------------
 hw/virtio.h     |  2 --
 2 files changed, 21 insertions(+), 66 deletions(-)

diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c
index 3622bb9..9e7cd1f 100644
--- a/hw/virtio-blk.c
+++ b/hw/virtio-blk.c
@@ -630,102 +630,59 @@ void virtio_blk_set_conf(DeviceState *dev, VirtIOBlkConf *blk)
     memcpy(&(s->blk), blk, sizeof(struct VirtIOBlkConf));
 }
 
-static VirtIODevice *virtio_blk_common_init(DeviceState *dev,
-                                          VirtIOBlkConf *blk, VirtIOBlock **ps)
+static int virtio_blk_device_init(VirtIODevice *vdev)
 {
-    VirtIOBlock *s = *ps;
+    DeviceState *qdev = DEVICE(vdev);
+    VirtIOBlock *s = VIRTIO_BLK(vdev);
+    VirtIOBlkConf *blk = &(s->blk);
     static int virtio_blk_id;
 
     if (!blk->conf.bs) {
         error_report("drive property not set");
-        return NULL;
+        return -1;
     }
     if (!bdrv_is_inserted(blk->conf.bs)) {
         error_report("Device needs media, but drive is empty");
-        return NULL;
+        return -1;
     }
 
     blkconf_serial(&blk->conf, &blk->serial);
     if (blkconf_geometry(&blk->conf, NULL, 65535, 255, 255) < 0) {
-        return NULL;
+        return -1;
     }
 
-    /*
-     * We have two cases here: the old virtio-blk-pci device, and the
-     * refactored virtio-blk.
-     */
-    if (s == NULL) {
-        /* virtio-blk-pci */
-        s = (VirtIOBlock *)virtio_common_init("virtio-blk", VIRTIO_ID_BLOCK,
-                                              sizeof(struct virtio_blk_config),
-                                              sizeof(VirtIOBlock));
-    } else {
-        /* virtio-blk */
-        virtio_init(VIRTIO_DEVICE(s), "virtio-blk", VIRTIO_ID_BLOCK,
-                    sizeof(struct virtio_blk_config));
-    }
+    virtio_init(vdev, "virtio-blk", VIRTIO_ID_BLOCK,
+                sizeof(struct virtio_blk_config));
 
-    s->vdev.get_config = virtio_blk_update_config;
-    s->vdev.set_config = virtio_blk_set_config;
-    s->vdev.get_features = virtio_blk_get_features;
-    s->vdev.set_status = virtio_blk_set_status;
-    s->vdev.reset = virtio_blk_reset;
+    vdev->get_config = virtio_blk_update_config;
+    vdev->set_config = virtio_blk_set_config;
+    vdev->get_features = virtio_blk_get_features;
+    vdev->set_status = virtio_blk_set_status;
+    vdev->reset = virtio_blk_reset;
     s->bs = blk->conf.bs;
     s->conf = &blk->conf;
     memcpy(&(s->blk), blk, sizeof(struct VirtIOBlkConf));
     s->rq = NULL;
     s->sector_mask = (s->conf->logical_block_size / BDRV_SECTOR_SIZE) - 1;
 
-    s->vq = virtio_add_queue(&s->vdev, 128, virtio_blk_handle_output);
+    s->vq = virtio_add_queue(vdev, 128, virtio_blk_handle_output);
 #ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
-    if (!virtio_blk_data_plane_create(&s->vdev, blk, &s->dataplane)) {
-        virtio_cleanup(&s->vdev);
-        return NULL;
+    if (!virtio_blk_data_plane_create(vdev, blk, &s->dataplane)) {
+        virtio_cleanup(vdev);
+        return -1;
     }
 #endif
 
     s->change = qemu_add_vm_change_state_handler(virtio_blk_dma_restart_cb, s);
-    s->qdev = dev;
-    register_savevm(dev, "virtio-blk", virtio_blk_id++, 2,
+    s->qdev = qdev;
+    register_savevm(qdev, "virtio-blk", virtio_blk_id++, 2,
                     virtio_blk_save, virtio_blk_load, s);
     bdrv_set_dev_ops(s->bs, &virtio_block_ops, s);
     bdrv_set_buffer_alignment(s->bs, s->conf->logical_block_size);
 
     bdrv_iostatus_enable(s->bs);
-    add_boot_device_path(s->conf->bootindex, dev, "/disk@0,0");
 
-    return &s->vdev;
-}
-
-VirtIODevice *virtio_blk_init(DeviceState *dev, VirtIOBlkConf *blk)
-{
-    VirtIOBlock *s = NULL;
-    return virtio_blk_common_init(dev, blk, &s);
-}
-
-void virtio_blk_exit(VirtIODevice *vdev)
-{
-    VirtIOBlock *s = to_virtio_blk(vdev);
-
-#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
-    virtio_blk_data_plane_destroy(s->dataplane);
-    s->dataplane = NULL;
-#endif
-    qemu_del_vm_change_state_handler(s->change);
-    unregister_savevm(s->qdev, "virtio-blk", s);
-    blockdev_mark_auto_del(s->bs);
-    virtio_cleanup(vdev);
-}
-
-
-static int virtio_blk_device_init(VirtIODevice *vdev)
-{
-    DeviceState *qdev = DEVICE(vdev);
-    VirtIOBlock *s = VIRTIO_BLK(vdev);
-    VirtIOBlkConf *blk = &(s->blk);
-    if (virtio_blk_common_init(qdev, blk, &s) == NULL) {
-        return -1;
-    }
+    add_boot_device_path(s->conf->bootindex, qdev, "/disk@0,0");
     return 0;
 }
 
diff --git a/hw/virtio.h b/hw/virtio.h
index ca43fd7..fdbe931 100644
--- a/hw/virtio.h
+++ b/hw/virtio.h
@@ -240,7 +240,6 @@ void virtio_bind_device(VirtIODevice *vdev, const VirtIOBindings *binding,
 
 /* Base devices.  */
 typedef struct VirtIOBlkConf VirtIOBlkConf;
-VirtIODevice *virtio_blk_init(DeviceState *dev, VirtIOBlkConf *blk);
 struct virtio_net_conf;
 VirtIODevice *virtio_net_init(DeviceState *dev, NICConf *conf,
                               struct virtio_net_conf *net,
@@ -258,7 +257,6 @@ VirtIODevice *virtio_9p_init(DeviceState *dev, V9fsConf *conf);
 
 
 void virtio_net_exit(VirtIODevice *vdev);
-void virtio_blk_exit(VirtIODevice *vdev);
 void virtio_serial_exit(VirtIODevice *vdev);
 void virtio_balloon_exit(VirtIODevice *vdev);
 void virtio_scsi_exit(VirtIODevice *vdev);
-- 
1.7.11.7

[Qemu-devel] [PATCH v10 10/11] virtio-blk: cleanup: QOM cast

[fred.konrad]

From: KONRAD Frederic <fred.konrad@greensocs.com>

Use QOM casts inside virtio-blk.

Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/virtio-blk.c | 33 ++++++++++++++-------------------
 hw/virtio-blk.h |  2 +-
 2 files changed, 15 insertions(+), 20 deletions(-)

diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c
index 9e7cd1f..663edcd 100644
--- a/hw/virtio-blk.c
+++ b/hw/virtio-blk.c
@@ -23,14 +23,6 @@
 #endif
 #include "hw/virtio-bus.h"
 
-/*
- * Moving to QOM later in this series.
- */
-static VirtIOBlock *to_virtio_blk(VirtIODevice *vdev)
-{
-    return (VirtIOBlock *)vdev;
-}
-
 typedef struct VirtIOBlockReq
 {
     VirtIOBlock *dev;
@@ -46,12 +38,13 @@ typedef struct VirtIOBlockReq
 static void virtio_blk_req_complete(VirtIOBlockReq *req, int status)
 {
     VirtIOBlock *s = req->dev;
+    VirtIODevice *vdev = VIRTIO_DEVICE(s);
 
     trace_virtio_blk_req_complete(req, status);
 
     stb_p(&req->in->status, status);
     virtqueue_push(s->vq, &req->elem, req->qiov.size + sizeof(*req->in));
-    virtio_notify(&s->vdev, s->vq);
+    virtio_notify(vdev, s->vq);
 }
 
 static int virtio_blk_handle_rw_error(VirtIOBlockReq *req, int error,
@@ -396,7 +389,7 @@ static void virtio_blk_handle_request(VirtIOBlockReq *req,
 
 static void virtio_blk_handle_output(VirtIODevice *vdev, VirtQueue *vq)
 {
-    VirtIOBlock *s = to_virtio_blk(vdev);
+    VirtIOBlock *s = VIRTIO_BLK(vdev);
     VirtIOBlockReq *req;
     MultiReqBuffer mrb = {
         .num_writes = 0,
@@ -464,7 +457,7 @@ static void virtio_blk_dma_restart_cb(void *opaque, int running,
 static void virtio_blk_reset(VirtIODevice *vdev)
 {
 #ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
-    VirtIOBlock *s = to_virtio_blk(vdev);
+    VirtIOBlock *s = VIRTIO_BLK(vdev);
 
     if (s->dataplane) {
         virtio_blk_data_plane_stop(s->dataplane);
@@ -482,7 +475,7 @@ static void virtio_blk_reset(VirtIODevice *vdev)
  */
 static void virtio_blk_update_config(VirtIODevice *vdev, uint8_t *config)
 {
-    VirtIOBlock *s = to_virtio_blk(vdev);
+    VirtIOBlock *s = VIRTIO_BLK(vdev);
     struct virtio_blk_config blkcfg;
     uint64_t capacity;
     int blk_size = s->conf->logical_block_size;
@@ -521,7 +514,7 @@ static void virtio_blk_update_config(VirtIODevice *vdev, uint8_t *config)
 
 static void virtio_blk_set_config(VirtIODevice *vdev, const uint8_t *config)
 {
-    VirtIOBlock *s = to_virtio_blk(vdev);
+    VirtIOBlock *s = VIRTIO_BLK(vdev);
     struct virtio_blk_config blkcfg;
 
     memcpy(&blkcfg, config, sizeof(blkcfg));
@@ -530,7 +523,7 @@ static void virtio_blk_set_config(VirtIODevice *vdev, const uint8_t *config)
 
 static uint32_t virtio_blk_get_features(VirtIODevice *vdev, uint32_t features)
 {
-    VirtIOBlock *s = to_virtio_blk(vdev);
+    VirtIOBlock *s = VIRTIO_BLK(vdev);
 
     features |= (1 << VIRTIO_BLK_F_SEG_MAX);
     features |= (1 << VIRTIO_BLK_F_GEOMETRY);
@@ -552,7 +545,7 @@ static uint32_t virtio_blk_get_features(VirtIODevice *vdev, uint32_t features)
 
 static void virtio_blk_set_status(VirtIODevice *vdev, uint8_t status)
 {
-    VirtIOBlock *s = to_virtio_blk(vdev);
+    VirtIOBlock *s = VIRTIO_BLK(vdev);
     uint32_t features;
 
 #ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
@@ -573,9 +566,10 @@ static void virtio_blk_set_status(VirtIODevice *vdev, uint8_t status)
 static void virtio_blk_save(QEMUFile *f, void *opaque)
 {
     VirtIOBlock *s = opaque;
+    VirtIODevice *vdev = VIRTIO_DEVICE(s);
     VirtIOBlockReq *req = s->rq;
 
-    virtio_save(&s->vdev, f);
+    virtio_save(vdev, f);
     
     while (req) {
         qemu_put_sbyte(f, 1);
@@ -588,12 +582,13 @@ static void virtio_blk_save(QEMUFile *f, void *opaque)
 static int virtio_blk_load(QEMUFile *f, void *opaque, int version_id)
 {
     VirtIOBlock *s = opaque;
+    VirtIODevice *vdev = VIRTIO_DEVICE(s);
     int ret;
 
     if (version_id != 2)
         return -EINVAL;
 
-    ret = virtio_load(&s->vdev, f);
+    ret = virtio_load(vdev, f);
     if (ret) {
         return ret;
     }
@@ -615,9 +610,9 @@ static int virtio_blk_load(QEMUFile *f, void *opaque, int version_id)
 
 static void virtio_blk_resize(void *opaque)
 {
-    VirtIOBlock *s = opaque;
+    VirtIODevice *vdev = VIRTIO_DEVICE(opaque);
 
-    virtio_notify_config(&s->vdev);
+    virtio_notify_config(vdev);
 }
 
 static const BlockDevOps virtio_block_ops = {
diff --git a/hw/virtio-blk.h b/hw/virtio-blk.h
index a040c01..51ac010 100644
--- a/hw/virtio-blk.h
+++ b/hw/virtio-blk.h
@@ -116,7 +116,7 @@ struct VirtIOBlkConf
 };
 
 typedef struct VirtIOBlock {
-    VirtIODevice vdev;
+    VirtIODevice parent_obj;
     BlockDriverState *bs;
     VirtQueue *vq;
     void *rq;
-- 
1.7.11.7

[Qemu-devel] [PATCH v10 11/11] virtio-blk: cleanup: remove qdev field.

[fred.konrad]

From: KONRAD Frederic <fred.konrad@greensocs.com>

The qdev field is no longer needed, just drop it.

Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/virtio-blk.c | 3 +--
 hw/virtio-blk.h | 1 -
 2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c
index 663edcd..e6f8875 100644
--- a/hw/virtio-blk.c
+++ b/hw/virtio-blk.c
@@ -669,7 +669,6 @@ static int virtio_blk_device_init(VirtIODevice *vdev)
 #endif
 
     s->change = qemu_add_vm_change_state_handler(virtio_blk_dma_restart_cb, s);
-    s->qdev = qdev;
     register_savevm(qdev, "virtio-blk", virtio_blk_id++, 2,
                     virtio_blk_save, virtio_blk_load, s);
     bdrv_set_dev_ops(s->bs, &virtio_block_ops, s);
@@ -690,7 +689,7 @@ static int virtio_blk_device_exit(DeviceState *dev)
     s->dataplane = NULL;
 #endif
     qemu_del_vm_change_state_handler(s->change);
-    unregister_savevm(s->qdev, "virtio-blk", s);
+    unregister_savevm(dev, "virtio-blk", s);
     blockdev_mark_auto_del(s->bs);
     virtio_common_cleanup(vdev);
     return 0;
diff --git a/hw/virtio-blk.h b/hw/virtio-blk.h
index 51ac010..8c6c78b 100644
--- a/hw/virtio-blk.h
+++ b/hw/virtio-blk.h
@@ -124,7 +124,6 @@ typedef struct VirtIOBlock {
     BlockConf *conf;
     VirtIOBlkConf blk;
     unsigned short sector_mask;
-    DeviceState *qdev;
     VMChangeStateEntry *change;
 #ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
     VirtIOBlockDataPlane *dataplane;
-- 
1.7.11.7

Re: [Qemu-devel] [PATCH v10 00/11] virtio-blk refactoring.

[Cornelia Huck]

On Mon, 18 Mar 2013 17:37:17 +0100
fred.konrad@greensocs.com wrote:

> From: KONRAD Frederic <fred.konrad@greensocs.com>
> 
> This is the next part of virtio-refactoring.
> 
> Basically it creates virtio-blk device which extends virtio-device.
> Then a virtio-blk can be connected on a virtio-bus.
> virtio-blk-pci, virtio-blk-s390x, virtio-blk-ccw are created too, they extend
> respectively virtio-pci, virtio-s390-device, virtio-ccw-device and have a
> virtio-blk.
> 
> You can checkout my branch here:
> 
> git://project.greensocs.com/qemu-virtio.git virtio-blk-v10

Comes up fine with virtio-ccw. device_add/device_del seems to work as
well.

> 
> I made basic tests (with linux guests) on:
>  * qemu-system-i386
>  * qemu-system-s390x
> 
> Cornelia made virtio-ccw test, and Stefan tried dataplane.
> 
> Changes v9 -> v10:
>     * Fix the hot unplug issue spotted by Anthony.
> Changes v8 -> v9:
>     * Fix the hot unplug issue spotted by Cornelia.
> Changes v7 -> v8:
>     * Fix the allow_hotplug assertion spotted by Anthony.
>     * Attached the make virtio device's structures public (v4).
> Changes v6 -> v7:
>     * Fix the DEFINE_VIRTIO_BLK_PROPERTIES macro issue spotted by Peter.
> 
> Thanks,
> 
> Fred
> 
> KONRAD Frederic (11):
>   virtio: make virtio device's structures public.
>   virtio-x-bus: fix allow_hotplug assertion.
>   virtio-pci: fix hot unplug.
>   virtio-blk: don't use pointer for configuration.
>   virtio-blk: add the virtio-blk device.
>   virtio-blk-pci: switch to new API.
>   virtio-blk-s390: switch to the new API.
>   virtio-blk-ccw switch to new API.
>   virtio-blk: cleanup: init and exit functions.
>   virtio-blk: cleanup: QOM cast
>   virtio-blk: cleanup: remove qdev field.
> 
>  hw/s390x/s390-virtio-bus.c |  32 ++++++----
>  hw/s390x/s390-virtio-bus.h |  13 +++-
>  hw/s390x/virtio-ccw.c      |  35 ++++++-----
>  hw/s390x/virtio-ccw.h      |  14 ++++-
>  hw/virtio-balloon.c        |  15 -----
>  hw/virtio-balloon.h        |  14 +++++
>  hw/virtio-blk.c            | 151 +++++++++++++++++++++++++--------------------
>  hw/virtio-blk.h            |  39 ++++++++++++
>  hw/virtio-net.c            |  50 ---------------
>  hw/virtio-net.h            |  50 +++++++++++++++
>  hw/virtio-pci.c            | 142 ++++++++++++++++++------------------------
>  hw/virtio-pci.h            |  15 ++++-
>  hw/virtio-rng.c            |  19 ------
>  hw/virtio-rng.h            |  19 ++++++
>  hw/virtio-scsi.c           |  15 -----
>  hw/virtio-scsi.h           |  16 +++++
>  hw/virtio-serial-bus.c     |  41 ------------
>  hw/virtio-serial.h         |  41 ++++++++++++
>  hw/virtio.h                |   2 -
>  19 files changed, 401 insertions(+), 322 deletions(-)
> 

Re: [Qemu-devel] [PATCH v10 00/11] virtio-blk refactoring.

[KONRAD Frédéric]

On 18/03/2013 18:01, Cornelia Huck wrote:
> On Mon, 18 Mar 2013 17:37:17 +0100
> fred.konrad@greensocs.com wrote:
>
>> From: KONRAD Frederic <fred.konrad@greensocs.com>
>>
>> This is the next part of virtio-refactoring.
>>
>> Basically it creates virtio-blk device which extends virtio-device.
>> Then a virtio-blk can be connected on a virtio-bus.
>> virtio-blk-pci, virtio-blk-s390x, virtio-blk-ccw are created too, they extend
>> respectively virtio-pci, virtio-s390-device, virtio-ccw-device and have a
>> virtio-blk.
>>
>> You can checkout my branch here:
>>
>> git://project.greensocs.com/qemu-virtio.git virtio-blk-v10
> Comes up fine with virtio-ccw. device_add/device_del seems to work as
> well.
good thanks :).

>> I made basic tests (with linux guests) on:
>>   * qemu-system-i386
>>   * qemu-system-s390x
>>
>> Cornelia made virtio-ccw test, and Stefan tried dataplane.
>>
>> Changes v9 -> v10:
>>      * Fix the hot unplug issue spotted by Anthony.
>> Changes v8 -> v9:
>>      * Fix the hot unplug issue spotted by Cornelia.
>> Changes v7 -> v8:
>>      * Fix the allow_hotplug assertion spotted by Anthony.
>>      * Attached the make virtio device's structures public (v4).
>> Changes v6 -> v7:
>>      * Fix the DEFINE_VIRTIO_BLK_PROPERTIES macro issue spotted by Peter.
>>
>> Thanks,
>>
>> Fred
>>
>> KONRAD Frederic (11):
>>    virtio: make virtio device's structures public.
>>    virtio-x-bus: fix allow_hotplug assertion.
>>    virtio-pci: fix hot unplug.
>>    virtio-blk: don't use pointer for configuration.
>>    virtio-blk: add the virtio-blk device.
>>    virtio-blk-pci: switch to new API.
>>    virtio-blk-s390: switch to the new API.
>>    virtio-blk-ccw switch to new API.
>>    virtio-blk: cleanup: init and exit functions.
>>    virtio-blk: cleanup: QOM cast
>>    virtio-blk: cleanup: remove qdev field.
>>
>>   hw/s390x/s390-virtio-bus.c |  32 ++++++----
>>   hw/s390x/s390-virtio-bus.h |  13 +++-
>>   hw/s390x/virtio-ccw.c      |  35 ++++++-----
>>   hw/s390x/virtio-ccw.h      |  14 ++++-
>>   hw/virtio-balloon.c        |  15 -----
>>   hw/virtio-balloon.h        |  14 +++++
>>   hw/virtio-blk.c            | 151 +++++++++++++++++++++++++--------------------
>>   hw/virtio-blk.h            |  39 ++++++++++++
>>   hw/virtio-net.c            |  50 ---------------
>>   hw/virtio-net.h            |  50 +++++++++++++++
>>   hw/virtio-pci.c            | 142 ++++++++++++++++++------------------------
>>   hw/virtio-pci.h            |  15 ++++-
>>   hw/virtio-rng.c            |  19 ------
>>   hw/virtio-rng.h            |  19 ++++++
>>   hw/virtio-scsi.c           |  15 -----
>>   hw/virtio-scsi.h           |  16 +++++
>>   hw/virtio-serial-bus.c     |  41 ------------
>>   hw/virtio-serial.h         |  41 ++++++++++++
>>   hw/virtio.h                |   2 -
>>   19 files changed, 401 insertions(+), 322 deletions(-)
>>

Re: [Qemu-devel] [PATCH v10 00/11] virtio-blk refactoring.

[Anthony Liguori]

Applied.  Thanks.

Regards,

Anthony Liguori