[PATCH 0/7] libqos: add VIRTIO PCI 1.0 support

[PATCH 0/7] libqos: add VIRTIO PCI 1.0 support

[Stefan Hajnoczi]

New VIRTIO devices are Non-Transitional.  This means they only expose the
VIRTIO 1.0 PCI register interface.

The libqos virtio-pci.c code only supports Legacy and Transitional devices (in
Legacy mode).  This patch series add VIRTIO PCI 1.0 support so that tests can
run against Non-Transitional devices too.

Note that this does not actually add VIRTIO 1.0 support to our tests.  That
would require extending feature negotiation (VIRTIO_F_VERSION_1).  I will look
at this as a separate step but the most pressing issue is getting libqos to
work with Non-Transitional virtio-pci devices.

Stefan Hajnoczi (7):
  libqos: extract Legacy virtio-pci.c code
  libqos: add iteration support to qpci_find_capability()
  libqos: pass full QVirtQueue to set_queue_address()
  libqos: add MSI-X callbacks to QVirtioPCIDevice
  libqos: expose common virtqueue setup/cleanup functions
  libqos: make the virtio-pci BAR index configurable
  libqos: add VIRTIO PCI 1.0 support

 tests/Makefile.include           |   1 +
 tests/libqos/pci.h               |   2 +-
 tests/libqos/virtio-pci-modern.h |  17 ++
 tests/libqos/virtio-pci.h        |  34 ++-
 tests/libqos/virtio.h            |   2 +-
 tests/libqos/pci.c               |  18 +-
 tests/libqos/virtio-mmio.c       |   6 +-
 tests/libqos/virtio-pci-modern.c | 405 +++++++++++++++++++++++++++++++
 tests/libqos/virtio-pci.c        |  91 ++++---
 9 files changed, 529 insertions(+), 47 deletions(-)
 create mode 100644 tests/libqos/virtio-pci-modern.h
 create mode 100644 tests/libqos/virtio-pci-modern.c

-- 
2.21.0

[PATCH 1/7] libqos: extract Legacy virtio-pci.c code

[Stefan Hajnoczi]

The current libqos virtio-pci.c code implements the VIRTIO Legacy
interface.  Extract existing code in preparation for VIRTIO 1.0 support.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 tests/libqos/virtio-pci.h |  2 --
 tests/libqos/virtio-pci.c | 25 ++++++++++---------------
 2 files changed, 10 insertions(+), 17 deletions(-)

diff --git a/tests/libqos/virtio-pci.h b/tests/libqos/virtio-pci.h
index 728b4715f1..0d105d67b3 100644
--- a/tests/libqos/virtio-pci.h
+++ b/tests/libqos/virtio-pci.h
@@ -31,8 +31,6 @@ typedef struct QVirtQueuePCI {
     uint32_t msix_data;
 } QVirtQueuePCI;
 
-extern const QVirtioBus qvirtio_pci;
-
 void virtio_pci_init(QVirtioPCIDevice *dev, QPCIBus *bus, QPCIAddress * addr);
 QVirtioPCIDevice *virtio_pci_new(QPCIBus *bus, QPCIAddress * addr);
 
diff --git a/tests/libqos/virtio-pci.c b/tests/libqos/virtio-pci.c
index 50499e75ef..c8d736f4d1 100644
--- a/tests/libqos/virtio-pci.c
+++ b/tests/libqos/virtio-pci.c
@@ -35,14 +35,6 @@
  * original qvirtio_pci_destructor and qvirtio_pci_start_hw.
  */
 
-static inline bool qvirtio_pci_is_big_endian(QVirtioPCIDevice *dev)
-{
-    QPCIBus *bus = dev->pdev->bus;
-
-    /* FIXME: virtio 1.0 is always little-endian */
-    return qtest_big_endian(bus->qts);
-}
-
 #define CONFIG_BASE(dev) (VIRTIO_PCI_CONFIG_OFF((dev)->pdev->msix_enabled))
 
 static uint8_t qvirtio_pci_config_readb(QVirtioDevice *d, uint64_t off)
@@ -55,8 +47,7 @@ static uint8_t qvirtio_pci_config_readb(QVirtioDevice *d, uint64_t off)
  * but virtio ( < 1.0) is in guest order
  * so with a big-endian guest the order has been reversed,
  * reverse it again
- * virtio-1.0 is always little-endian, like PCI, but this
- * case will be managed inside qvirtio_pci_is_big_endian()
+ * virtio-1.0 is always little-endian, like PCI
  */
 
 static uint16_t qvirtio_pci_config_readw(QVirtioDevice *d, uint64_t off)
@@ -258,7 +249,7 @@ static void qvirtio_pci_virtqueue_kick(QVirtioDevice *d, QVirtQueue *vq)
     qpci_io_writew(dev->pdev, dev->bar, VIRTIO_PCI_QUEUE_NOTIFY, vq->index);
 }
 
-const QVirtioBus qvirtio_pci = {
+static const QVirtioBus qvirtio_pci_legacy = {
     .config_readb = qvirtio_pci_config_readb,
     .config_readw = qvirtio_pci_config_readw,
     .config_readl = qvirtio_pci_config_readl,
@@ -374,15 +365,19 @@ void qvirtio_pci_start_hw(QOSGraphObject *obj)
     qvirtio_start_device(&dev->vdev);
 }
 
+static void qvirtio_pci_init_legacy(QVirtioPCIDevice *dev)
+{
+    dev->vdev.device_type = qpci_config_readw(dev->pdev, PCI_SUBSYSTEM_ID);
+    dev->vdev.bus = &qvirtio_pci_legacy;
+    dev->vdev.big_endian = qtest_big_endian(dev->pdev->bus->qts);
+}
+
 static void qvirtio_pci_init_from_pcidev(QVirtioPCIDevice *dev, QPCIDevice *pci_dev)
 {
     dev->pdev = pci_dev;
-    dev->vdev.device_type = qpci_config_readw(pci_dev, PCI_SUBSYSTEM_ID);
-
     dev->config_msix_entry = -1;
 
-    dev->vdev.bus = &qvirtio_pci;
-    dev->vdev.big_endian = qvirtio_pci_is_big_endian(dev);
+    qvirtio_pci_init_legacy(dev);
 
     /* each virtio-xxx-pci device should override at least this function */
     dev->obj.get_driver = NULL;
-- 
2.21.0

[PATCH 2/7] libqos: add iteration support to qpci_find_capability()

[Stefan Hajnoczi]

VIRTIO 1.0 PCI devices have multiple PCI_CAP_ID_VNDR capabilities so we
need a way to iterate over them.  Extend qpci_find_capability() to take
the last address.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 tests/libqos/pci.h |  2 +-
 tests/libqos/pci.c | 18 ++++++++++++------
 2 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/tests/libqos/pci.h b/tests/libqos/pci.h
index a5389a5845..590c175190 100644
--- a/tests/libqos/pci.h
+++ b/tests/libqos/pci.h
@@ -86,7 +86,7 @@ bool qpci_has_buggy_msi(QPCIDevice *dev);
 bool qpci_check_buggy_msi(QPCIDevice *dev);
 
 void qpci_device_enable(QPCIDevice *dev);
-uint8_t qpci_find_capability(QPCIDevice *dev, uint8_t id);
+uint8_t qpci_find_capability(QPCIDevice *dev, uint8_t id, uint8_t start_addr);
 void qpci_msix_enable(QPCIDevice *dev);
 void qpci_msix_disable(QPCIDevice *dev);
 bool qpci_msix_pending(QPCIDevice *dev, uint16_t entry);
diff --git a/tests/libqos/pci.c b/tests/libqos/pci.c
index 662ee7a517..b8679dff1d 100644
--- a/tests/libqos/pci.c
+++ b/tests/libqos/pci.c
@@ -115,10 +115,16 @@ void qpci_device_enable(QPCIDevice *dev)
     g_assert_cmphex(cmd & PCI_COMMAND_MASTER, ==, PCI_COMMAND_MASTER);
 }
 
-uint8_t qpci_find_capability(QPCIDevice *dev, uint8_t id)
+uint8_t qpci_find_capability(QPCIDevice *dev, uint8_t id, uint8_t start_addr)
 {
     uint8_t cap;
-    uint8_t addr = qpci_config_readb(dev, PCI_CAPABILITY_LIST);
+    uint8_t addr;
+
+    if (start_addr) {
+        addr = qpci_config_readb(dev, start_addr + PCI_CAP_LIST_NEXT);
+    } else {
+        addr = qpci_config_readb(dev, PCI_CAPABILITY_LIST);
+    }
 
     do {
         cap = qpci_config_readb(dev, addr);
@@ -138,7 +144,7 @@ void qpci_msix_enable(QPCIDevice *dev)
     uint8_t bir_table;
     uint8_t bir_pba;
 
-    addr = qpci_find_capability(dev, PCI_CAP_ID_MSIX);
+    addr = qpci_find_capability(dev, PCI_CAP_ID_MSIX, 0);
     g_assert_cmphex(addr, !=, 0);
 
     val = qpci_config_readw(dev, addr + PCI_MSIX_FLAGS);
@@ -167,7 +173,7 @@ void qpci_msix_disable(QPCIDevice *dev)
     uint16_t val;
 
     g_assert(dev->msix_enabled);
-    addr = qpci_find_capability(dev, PCI_CAP_ID_MSIX);
+    addr = qpci_find_capability(dev, PCI_CAP_ID_MSIX, 0);
     g_assert_cmphex(addr, !=, 0);
     val = qpci_config_readw(dev, addr + PCI_MSIX_FLAGS);
     qpci_config_writew(dev, addr + PCI_MSIX_FLAGS,
@@ -203,7 +209,7 @@ bool qpci_msix_masked(QPCIDevice *dev, uint16_t entry)
     uint64_t vector_off = dev->msix_table_off + entry * PCI_MSIX_ENTRY_SIZE;
 
     g_assert(dev->msix_enabled);
-    addr = qpci_find_capability(dev, PCI_CAP_ID_MSIX);
+    addr = qpci_find_capability(dev, PCI_CAP_ID_MSIX, 0);
     g_assert_cmphex(addr, !=, 0);
     val = qpci_config_readw(dev, addr + PCI_MSIX_FLAGS);
 
@@ -221,7 +227,7 @@ uint16_t qpci_msix_table_size(QPCIDevice *dev)
     uint8_t addr;
     uint16_t control;
 
-    addr = qpci_find_capability(dev, PCI_CAP_ID_MSIX);
+    addr = qpci_find_capability(dev, PCI_CAP_ID_MSIX, 0);
     g_assert_cmphex(addr, !=, 0);
 
     control = qpci_config_readw(dev, addr + PCI_MSIX_FLAGS);
-- 
2.21.0

[PATCH 3/7] libqos: pass full QVirtQueue to set_queue_address()

[Stefan Hajnoczi]

Instead of just passing the vring page frame number, pass the full
QVirtQueue.  This will allow the VIRTIO 1.0 transport to program the
fine-grained vring address registers in the future.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 tests/libqos/virtio.h      | 2 +-
 tests/libqos/virtio-mmio.c | 6 ++++--
 tests/libqos/virtio-pci.c  | 6 ++++--
 3 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/tests/libqos/virtio.h b/tests/libqos/virtio.h
index 2cb2448f46..37f55b6ade 100644
--- a/tests/libqos/virtio.h
+++ b/tests/libqos/virtio.h
@@ -79,7 +79,7 @@ struct QVirtioBus {
     uint16_t (*get_queue_size)(QVirtioDevice *d);
 
     /* Set the address of the selected queue */
-    void (*set_queue_address)(QVirtioDevice *d, uint32_t pfn);
+    void (*set_queue_address)(QVirtioDevice *d, QVirtQueue *vq);
 
     /* Setup the virtqueue specified by index */
     QVirtQueue *(*virtqueue_setup)(QVirtioDevice *d, QGuestAllocator *alloc,
diff --git a/tests/libqos/virtio-mmio.c b/tests/libqos/virtio-mmio.c
index d0047876a8..43ca4e49c1 100644
--- a/tests/libqos/virtio-mmio.c
+++ b/tests/libqos/virtio-mmio.c
@@ -127,9 +127,11 @@ static uint16_t qvirtio_mmio_get_queue_size(QVirtioDevice *d)
     return (uint16_t)qtest_readl(dev->qts, dev->addr + QVIRTIO_MMIO_QUEUE_NUM_MAX);
 }
 
-static void qvirtio_mmio_set_queue_address(QVirtioDevice *d, uint32_t pfn)
+static void qvirtio_mmio_set_queue_address(QVirtioDevice *d, QVirtQueue *vq)
 {
     QVirtioMMIODevice *dev = container_of(d, QVirtioMMIODevice, vdev);
+    uint64_t pfn = vq->desc / dev->page_size;
+
     qtest_writel(dev->qts, dev->addr + QVIRTIO_MMIO_QUEUE_PFN, pfn);
 }
 
@@ -162,7 +164,7 @@ static QVirtQueue *qvirtio_mmio_virtqueue_setup(QVirtioDevice *d,
 
     addr = guest_alloc(alloc, qvring_size(vq->size, dev->page_size));
     qvring_init(dev->qts, alloc, vq, addr);
-    qvirtio_mmio_set_queue_address(d, vq->desc / dev->page_size);
+    qvirtio_mmio_set_queue_address(d, vq);
 
     return vq;
 }
diff --git a/tests/libqos/virtio-pci.c b/tests/libqos/virtio-pci.c
index c8d736f4d1..4772239b61 100644
--- a/tests/libqos/virtio-pci.c
+++ b/tests/libqos/virtio-pci.c
@@ -190,9 +190,11 @@ static uint16_t qvirtio_pci_get_queue_size(QVirtioDevice *d)
     return qpci_io_readw(dev->pdev, dev->bar, VIRTIO_PCI_QUEUE_NUM);
 }
 
-static void qvirtio_pci_set_queue_address(QVirtioDevice *d, uint32_t pfn)
+static void qvirtio_pci_set_queue_address(QVirtioDevice *d, QVirtQueue *vq)
 {
     QVirtioPCIDevice *dev = container_of(d, QVirtioPCIDevice, vdev);
+    uint64_t pfn = vq->desc / VIRTIO_PCI_VRING_ALIGN;
+
     qpci_io_writel(dev->pdev, dev->bar, VIRTIO_PCI_QUEUE_PFN, pfn);
 }
 
@@ -229,7 +231,7 @@ static QVirtQueue *qvirtio_pci_virtqueue_setup(QVirtioDevice *d,
     addr = guest_alloc(alloc, qvring_size(vqpci->vq.size,
                                           VIRTIO_PCI_VRING_ALIGN));
     qvring_init(qvpcidev->pdev->bus->qts, alloc, &vqpci->vq, addr);
-    qvirtio_pci_set_queue_address(d, vqpci->vq.desc / VIRTIO_PCI_VRING_ALIGN);
+    qvirtio_pci_set_queue_address(d, &vqpci->vq);
 
     return &vqpci->vq;
 }
-- 
2.21.0

[PATCH 4/7] libqos: add MSI-X callbacks to QVirtioPCIDevice

[Stefan Hajnoczi]

The MSI-X vectors are programmed differently in the VIRTIO 1.0 and
Legacy interfaces.  Introduce callbacks so different implementations can
be used depending on the interface version.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 tests/libqos/virtio-pci.h | 12 ++++++++++++
 tests/libqos/virtio-pci.c | 36 +++++++++++++++++++++++++++---------
 2 files changed, 39 insertions(+), 9 deletions(-)

diff --git a/tests/libqos/virtio-pci.h b/tests/libqos/virtio-pci.h
index 0d105d67b3..443e53affc 100644
--- a/tests/libqos/virtio-pci.h
+++ b/tests/libqos/virtio-pci.h
@@ -14,16 +14,28 @@
 #include "libqos/pci.h"
 #include "libqos/qgraph.h"
 
+typedef struct QVirtioPCIMSIXOps QVirtioPCIMSIXOps;
+
 typedef struct QVirtioPCIDevice {
     QOSGraphObject obj;
     QVirtioDevice vdev;
     QPCIDevice *pdev;
     QPCIBar bar;
+    const QVirtioPCIMSIXOps *msix_ops;
     uint16_t config_msix_entry;
     uint64_t config_msix_addr;
     uint32_t config_msix_data;
 } QVirtioPCIDevice;
 
+struct QVirtioPCIMSIXOps {
+    /* Set the Configuration Vector for MSI-X */
+    void (*set_config_vector)(QVirtioPCIDevice *d, uint16_t entry);
+
+    /* Set the Queue Vector for MSI-X */
+    void (*set_queue_vector)(QVirtioPCIDevice *d, uint16_t vq_idx,
+                             uint16_t entry);
+};
+
 typedef struct QVirtQueuePCI {
     QVirtQueue vq;
     uint16_t msix_entry;
diff --git a/tests/libqos/virtio-pci.c b/tests/libqos/virtio-pci.c
index 4772239b61..a3362c1b54 100644
--- a/tests/libqos/virtio-pci.c
+++ b/tests/libqos/virtio-pci.c
@@ -271,6 +271,30 @@ static const QVirtioBus qvirtio_pci_legacy = {
     .virtqueue_kick = qvirtio_pci_virtqueue_kick,
 };
 
+static void qvirtio_pci_set_config_vector(QVirtioPCIDevice *d, uint16_t entry)
+{
+    uint16_t vector;
+
+    qpci_io_writew(d->pdev, d->bar, VIRTIO_MSI_CONFIG_VECTOR, entry);
+    vector = qpci_io_readw(d->pdev, d->bar, VIRTIO_MSI_CONFIG_VECTOR);
+    g_assert_cmphex(vector, !=, VIRTIO_MSI_NO_VECTOR);
+}
+
+static void qvirtio_pci_set_queue_vector(QVirtioPCIDevice *d, uint16_t vq_idx, uint16_t entry)
+{
+    uint16_t vector;
+
+    qvirtio_pci_queue_select(&d->vdev, vq_idx);
+    qpci_io_writew(d->pdev, d->bar, VIRTIO_MSI_QUEUE_VECTOR, entry);
+    vector = qpci_io_readw(d->pdev, d->bar, VIRTIO_MSI_QUEUE_VECTOR);
+    g_assert_cmphex(vector, !=, VIRTIO_MSI_NO_VECTOR);
+}
+
+static const QVirtioPCIMSIXOps qvirtio_pci_msix_ops_legacy = {
+    .set_config_vector = qvirtio_pci_set_config_vector,
+    .set_queue_vector = qvirtio_pci_set_queue_vector,
+};
+
 void qvirtio_pci_device_enable(QVirtioPCIDevice *d)
 {
     qpci_device_enable(d->pdev);
@@ -285,7 +309,6 @@ void qvirtio_pci_device_disable(QVirtioPCIDevice *d)
 void qvirtqueue_pci_msix_setup(QVirtioPCIDevice *d, QVirtQueuePCI *vqpci,
                                         QGuestAllocator *alloc, uint16_t entry)
 {
-    uint16_t vector;
     uint32_t control;
     uint64_t off;
 
@@ -311,16 +334,12 @@ void qvirtqueue_pci_msix_setup(QVirtioPCIDevice *d, QVirtQueuePCI *vqpci,
                    off + PCI_MSIX_ENTRY_VECTOR_CTRL,
                    control & ~PCI_MSIX_ENTRY_CTRL_MASKBIT);
 
-    qvirtio_pci_queue_select(&d->vdev, vqpci->vq.index);
-    qpci_io_writew(d->pdev, d->bar, VIRTIO_MSI_QUEUE_VECTOR, entry);
-    vector = qpci_io_readw(d->pdev, d->bar, VIRTIO_MSI_QUEUE_VECTOR);
-    g_assert_cmphex(vector, !=, VIRTIO_MSI_NO_VECTOR);
+    d->msix_ops->set_queue_vector(d, vqpci->vq.index, entry);
 }
 
 void qvirtio_pci_set_msix_configuration_vector(QVirtioPCIDevice *d,
                                         QGuestAllocator *alloc, uint16_t entry)
 {
-    uint16_t vector;
     uint32_t control;
     uint64_t off;
 
@@ -348,9 +367,7 @@ void qvirtio_pci_set_msix_configuration_vector(QVirtioPCIDevice *d,
                    off + PCI_MSIX_ENTRY_VECTOR_CTRL,
                    control & ~PCI_MSIX_ENTRY_CTRL_MASKBIT);
 
-    qpci_io_writew(d->pdev, d->bar, VIRTIO_MSI_CONFIG_VECTOR, entry);
-    vector = qpci_io_readw(d->pdev, d->bar, VIRTIO_MSI_CONFIG_VECTOR);
-    g_assert_cmphex(vector, !=, VIRTIO_MSI_NO_VECTOR);
+    d->msix_ops->set_config_vector(d, entry);
 }
 
 void qvirtio_pci_destructor(QOSGraphObject *obj)
@@ -371,6 +388,7 @@ static void qvirtio_pci_init_legacy(QVirtioPCIDevice *dev)
 {
     dev->vdev.device_type = qpci_config_readw(dev->pdev, PCI_SUBSYSTEM_ID);
     dev->vdev.bus = &qvirtio_pci_legacy;
+    dev->msix_ops = &qvirtio_pci_msix_ops_legacy;
     dev->vdev.big_endian = qtest_big_endian(dev->pdev->bus->qts);
 }
 
-- 
2.21.0

[PATCH 5/7] libqos: expose common virtqueue setup/cleanup functions

[Stefan Hajnoczi]

The VIRTIO 1.0 code will need to perform additional steps but it will
reuse the common virtqueue setup/cleanup code.  Make these functions
public.

Make sure to invoke callbacks via QVirtioBus instead of directly calling
the virtio-pci Legacy versions of these functions.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 tests/libqos/virtio-pci.h |  8 ++++++++
 tests/libqos/virtio-pci.c | 19 ++++++++++---------
 2 files changed, 18 insertions(+), 9 deletions(-)

diff --git a/tests/libqos/virtio-pci.h b/tests/libqos/virtio-pci.h
index 443e53affc..b620c30451 100644
--- a/tests/libqos/virtio-pci.h
+++ b/tests/libqos/virtio-pci.h
@@ -63,4 +63,12 @@ void qvirtio_pci_set_msix_configuration_vector(QVirtioPCIDevice *d,
                                         QGuestAllocator *alloc, uint16_t entry);
 void qvirtqueue_pci_msix_setup(QVirtioPCIDevice *d, QVirtQueuePCI *vqpci,
                                         QGuestAllocator *alloc, uint16_t entry);
+
+/* Used by Legacy and Modern virtio-pci code */
+QVirtQueue *qvirtio_pci_virtqueue_setup_common(QVirtioDevice *d,
+                                               QGuestAllocator *alloc,
+                                               uint16_t index);
+void qvirtio_pci_virtqueue_cleanup_common(QVirtQueue *vq,
+                                          QGuestAllocator *alloc);
+
 #endif
diff --git a/tests/libqos/virtio-pci.c b/tests/libqos/virtio-pci.c
index a3362c1b54..9625a262bd 100644
--- a/tests/libqos/virtio-pci.c
+++ b/tests/libqos/virtio-pci.c
@@ -198,8 +198,9 @@ static void qvirtio_pci_set_queue_address(QVirtioDevice *d, QVirtQueue *vq)
     qpci_io_writel(dev->pdev, dev->bar, VIRTIO_PCI_QUEUE_PFN, pfn);
 }
 
-static QVirtQueue *qvirtio_pci_virtqueue_setup(QVirtioDevice *d,
-                                        QGuestAllocator *alloc, uint16_t index)
+QVirtQueue *qvirtio_pci_virtqueue_setup_common(QVirtioDevice *d,
+                                               QGuestAllocator *alloc,
+                                               uint16_t index)
 {
     uint32_t feat;
     uint64_t addr;
@@ -207,11 +208,11 @@ static QVirtQueue *qvirtio_pci_virtqueue_setup(QVirtioDevice *d,
     QVirtioPCIDevice *qvpcidev = container_of(d, QVirtioPCIDevice, vdev);
 
     vqpci = g_malloc0(sizeof(*vqpci));
-    feat = qvirtio_pci_get_guest_features(d);
+    feat = d->bus->get_guest_features(d);
 
-    qvirtio_pci_queue_select(d, index);
+    d->bus->queue_select(d, index);
     vqpci->vq.index = index;
-    vqpci->vq.size = qvirtio_pci_get_queue_size(d);
+    vqpci->vq.size = d->bus->get_queue_size(d);
     vqpci->vq.free_head = 0;
     vqpci->vq.num_free = vqpci->vq.size;
     vqpci->vq.align = VIRTIO_PCI_VRING_ALIGN;
@@ -231,12 +232,12 @@ static QVirtQueue *qvirtio_pci_virtqueue_setup(QVirtioDevice *d,
     addr = guest_alloc(alloc, qvring_size(vqpci->vq.size,
                                           VIRTIO_PCI_VRING_ALIGN));
     qvring_init(qvpcidev->pdev->bus->qts, alloc, &vqpci->vq, addr);
-    qvirtio_pci_set_queue_address(d, &vqpci->vq);
+    d->bus->set_queue_address(d, &vqpci->vq);
 
     return &vqpci->vq;
 }
 
-static void qvirtio_pci_virtqueue_cleanup(QVirtQueue *vq,
+void qvirtio_pci_virtqueue_cleanup_common(QVirtQueue *vq,
                                           QGuestAllocator *alloc)
 {
     QVirtQueuePCI *vqpci = container_of(vq, QVirtQueuePCI, vq);
@@ -266,8 +267,8 @@ static const QVirtioBus qvirtio_pci_legacy = {
     .queue_select = qvirtio_pci_queue_select,
     .get_queue_size = qvirtio_pci_get_queue_size,
     .set_queue_address = qvirtio_pci_set_queue_address,
-    .virtqueue_setup = qvirtio_pci_virtqueue_setup,
-    .virtqueue_cleanup = qvirtio_pci_virtqueue_cleanup,
+    .virtqueue_setup = qvirtio_pci_virtqueue_setup_common,
+    .virtqueue_cleanup = qvirtio_pci_virtqueue_cleanup_common,
     .virtqueue_kick = qvirtio_pci_virtqueue_kick,
 };
 
-- 
2.21.0

[PATCH 6/7] libqos: make the virtio-pci BAR index configurable

[Stefan Hajnoczi]

The Legacy virtio-pci interface always uses BAR 0.  VIRTIO 1.0 may need
to use a different BAR index, so make it configurable.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 tests/libqos/virtio-pci.h | 2 ++
 tests/libqos/virtio-pci.c | 3 ++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/tests/libqos/virtio-pci.h b/tests/libqos/virtio-pci.h
index b620c30451..f2d53aa377 100644
--- a/tests/libqos/virtio-pci.h
+++ b/tests/libqos/virtio-pci.h
@@ -25,6 +25,8 @@ typedef struct QVirtioPCIDevice {
     uint16_t config_msix_entry;
     uint64_t config_msix_addr;
     uint32_t config_msix_data;
+
+    uint8_t bar_idx;
 } QVirtioPCIDevice;
 
 struct QVirtioPCIMSIXOps {
diff --git a/tests/libqos/virtio-pci.c b/tests/libqos/virtio-pci.c
index 9625a262bd..08451cb7f7 100644
--- a/tests/libqos/virtio-pci.c
+++ b/tests/libqos/virtio-pci.c
@@ -299,7 +299,7 @@ static const QVirtioPCIMSIXOps qvirtio_pci_msix_ops_legacy = {
 void qvirtio_pci_device_enable(QVirtioPCIDevice *d)
 {
     qpci_device_enable(d->pdev);
-    d->bar = qpci_iomap(d->pdev, 0, NULL);
+    d->bar = qpci_iomap(d->pdev, d->bar_idx, NULL);
 }
 
 void qvirtio_pci_device_disable(QVirtioPCIDevice *d)
@@ -388,6 +388,7 @@ void qvirtio_pci_start_hw(QOSGraphObject *obj)
 static void qvirtio_pci_init_legacy(QVirtioPCIDevice *dev)
 {
     dev->vdev.device_type = qpci_config_readw(dev->pdev, PCI_SUBSYSTEM_ID);
+    dev->bar_idx = 0;
     dev->vdev.bus = &qvirtio_pci_legacy;
     dev->msix_ops = &qvirtio_pci_msix_ops_legacy;
     dev->vdev.big_endian = qtest_big_endian(dev->pdev->bus->qts);
-- 
2.21.0

[PATCH 7/7] libqos: add VIRTIO PCI 1.0 support

[Stefan Hajnoczi]

Implement the VIRTIO 1.0 virtio-pci interface.  The main change here is
that the register layout is no longer a fixed layout in BAR 0.  Instead
we have to iterate of PCI Capabilities to find descriptions of where
various registers are located.  The vring registers are also more
fine-grained, allowing for more flexible vring layouts, but we don't
take advantage of that.

Note that test cases do not negotiate VIRTIO_F_VERSION_1 yet and are
therefore not running in VIRTIO 1.0 mode.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 tests/Makefile.include           |   1 +
 tests/libqos/virtio-pci-modern.h |  17 ++
 tests/libqos/virtio-pci.h        |  10 +
 tests/libqos/virtio-pci-modern.c | 405 +++++++++++++++++++++++++++++++
 tests/libqos/virtio-pci.c        |   6 +-
 5 files changed, 438 insertions(+), 1 deletion(-)
 create mode 100644 tests/libqos/virtio-pci-modern.h
 create mode 100644 tests/libqos/virtio-pci-modern.c

diff --git a/tests/Makefile.include b/tests/Makefile.include
index 3543451ed3..3f633c8313 100644
--- a/tests/Makefile.include
+++ b/tests/Makefile.include
@@ -715,6 +715,7 @@ qos-test-obj-y += tests/libqos/virtio-blk.o
 qos-test-obj-y += tests/libqos/virtio-mmio.o
 qos-test-obj-y += tests/libqos/virtio-net.o
 qos-test-obj-y += tests/libqos/virtio-pci.o
+qos-test-obj-y += tests/libqos/virtio-pci-modern.o
 qos-test-obj-y += tests/libqos/virtio-rng.o
 qos-test-obj-y += tests/libqos/virtio-scsi.o
 qos-test-obj-y += tests/libqos/virtio-serial.o
diff --git a/tests/libqos/virtio-pci-modern.h b/tests/libqos/virtio-pci-modern.h
new file mode 100644
index 0000000000..6bf2b207c3
--- /dev/null
+++ b/tests/libqos/virtio-pci-modern.h
@@ -0,0 +1,17 @@
+/*
+ * libqos virtio PCI VIRTIO 1.0 definitions
+ *
+ * Copyright (c) 2019 Red Hat, Inc
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef LIBQOS_VIRTIO_PCI_MODERN_H
+#define LIBQOS_VIRTIO_PCI_MODERN_H
+
+#include "virtio-pci.h"
+
+bool qvirtio_pci_init_virtio_1(QVirtioPCIDevice *dev);
+
+#endif /* LIBQOS_VIRTIO_PCI_MODERN_H */
diff --git a/tests/libqos/virtio-pci.h b/tests/libqos/virtio-pci.h
index f2d53aa377..29d4e9bf79 100644
--- a/tests/libqos/virtio-pci.h
+++ b/tests/libqos/virtio-pci.h
@@ -27,6 +27,13 @@ typedef struct QVirtioPCIDevice {
     uint32_t config_msix_data;
 
     uint8_t bar_idx;
+
+    /* VIRTIO 1.0 */
+    uint32_t common_cfg_offset;
+    uint32_t notify_cfg_offset;
+    uint32_t notify_off_multiplier;
+    uint32_t isr_cfg_offset;
+    uint32_t device_cfg_offset;
 } QVirtioPCIDevice;
 
 struct QVirtioPCIMSIXOps {
@@ -43,6 +50,9 @@ typedef struct QVirtQueuePCI {
     uint16_t msix_entry;
     uint64_t msix_addr;
     uint32_t msix_data;
+
+    /* VIRTIO 1.0 */
+    uint64_t notify_offset;
 } QVirtQueuePCI;
 
 void virtio_pci_init(QVirtioPCIDevice *dev, QPCIBus *bus, QPCIAddress * addr);
diff --git a/tests/libqos/virtio-pci-modern.c b/tests/libqos/virtio-pci-modern.c
new file mode 100644
index 0000000000..d4f0e22822
--- /dev/null
+++ b/tests/libqos/virtio-pci-modern.c
@@ -0,0 +1,405 @@
+/*
+ * libqos VIRTIO 1.0 PCI driver
+ *
+ * Copyright (c) 2019 Red Hat, Inc
+ *
+ * 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 "qemu/osdep.h"
+#include "standard-headers/linux/pci_regs.h"
+#include "standard-headers/linux/virtio_pci.h"
+#include "virtio-pci-modern.h"
+
+static uint8_t config_readb(QVirtioDevice *d, uint64_t addr)
+{
+    QVirtioPCIDevice *dev = container_of(d, QVirtioPCIDevice, vdev);
+    return qpci_io_readb(dev->pdev, dev->bar, dev->device_cfg_offset + addr);
+}
+
+static uint16_t config_readw(QVirtioDevice *d, uint64_t addr)
+{
+    QVirtioPCIDevice *dev = container_of(d, QVirtioPCIDevice, vdev);
+    return qpci_io_readw(dev->pdev, dev->bar, dev->device_cfg_offset + addr);
+}
+
+static uint32_t config_readl(QVirtioDevice *d, uint64_t addr)
+{
+    QVirtioPCIDevice *dev = container_of(d, QVirtioPCIDevice, vdev);
+    return qpci_io_readl(dev->pdev, dev->bar, dev->device_cfg_offset + addr);
+}
+
+static uint64_t config_readq(QVirtioDevice *d, uint64_t addr)
+{
+    QVirtioPCIDevice *dev = container_of(d, QVirtioPCIDevice, vdev);
+    return qpci_io_readq(dev->pdev, dev->bar, dev->device_cfg_offset + addr);
+}
+
+static uint32_t get_features(QVirtioDevice *d)
+{
+    QVirtioPCIDevice *dev = container_of(d, QVirtioPCIDevice, vdev);
+
+    qpci_io_writel(dev->pdev, dev->bar, dev->common_cfg_offset +
+                   offsetof(struct virtio_pci_common_cfg,
+                            device_feature_select),
+                   0);
+    return qpci_io_readl(dev->pdev, dev->bar, dev->common_cfg_offset +
+                         offsetof(struct virtio_pci_common_cfg,
+                                  device_feature));
+}
+
+static void set_features(QVirtioDevice *d, uint32_t features)
+{
+    QVirtioPCIDevice *dev = container_of(d, QVirtioPCIDevice, vdev);
+
+    qpci_io_writel(dev->pdev, dev->bar, dev->common_cfg_offset +
+                   offsetof(struct virtio_pci_common_cfg,
+                            guest_feature_select),
+                   0);
+    qpci_io_writel(dev->pdev, dev->bar, dev->common_cfg_offset +
+                   offsetof(struct virtio_pci_common_cfg,
+                            guest_feature),
+                   features);
+}
+
+static uint32_t get_guest_features(QVirtioDevice *d)
+{
+    QVirtioPCIDevice *dev = container_of(d, QVirtioPCIDevice, vdev);
+
+    qpci_io_writel(dev->pdev, dev->bar, dev->common_cfg_offset +
+                   offsetof(struct virtio_pci_common_cfg,
+                            guest_feature_select),
+                   0);
+    return qpci_io_readl(dev->pdev, dev->bar, dev->common_cfg_offset +
+                         offsetof(struct virtio_pci_common_cfg,
+                                  guest_feature));
+}
+
+static uint8_t get_status(QVirtioDevice *d)
+{
+    QVirtioPCIDevice *dev = container_of(d, QVirtioPCIDevice, vdev);
+
+    return qpci_io_readb(dev->pdev, dev->bar, dev->common_cfg_offset +
+                         offsetof(struct virtio_pci_common_cfg,
+                                  device_status));
+}
+
+static void set_status(QVirtioDevice *d, uint8_t status)
+{
+    QVirtioPCIDevice *dev = container_of(d, QVirtioPCIDevice, vdev);
+
+    return qpci_io_writeb(dev->pdev, dev->bar, dev->common_cfg_offset +
+                          offsetof(struct virtio_pci_common_cfg,
+                                   device_status),
+                          status);
+}
+
+static bool get_msix_status(QVirtioPCIDevice *dev, uint32_t msix_entry,
+                            uint32_t msix_addr, uint32_t msix_data)
+{
+    uint32_t data;
+
+    g_assert_cmpint(msix_entry, !=, -1);
+    if (qpci_msix_masked(dev->pdev, msix_entry)) {
+        /* No ISR checking should be done if masked, but read anyway */
+        return qpci_msix_pending(dev->pdev, msix_entry);
+    }
+
+    data = qtest_readl(dev->pdev->bus->qts, msix_addr);
+    if (data == msix_data) {
+        qtest_writel(dev->pdev->bus->qts, msix_addr, 0);
+        return true;
+    } else {
+        return false;
+    }
+}
+
+static bool get_queue_isr_status(QVirtioDevice *d, QVirtQueue *vq)
+{
+    QVirtioPCIDevice *dev = container_of(d, QVirtioPCIDevice, vdev);
+
+    if (dev->pdev->msix_enabled) {
+        QVirtQueuePCI *vqpci = container_of(vq, QVirtQueuePCI, vq);
+
+        return get_msix_status(dev, vqpci->msix_entry, vqpci->msix_addr,
+                               vqpci->msix_data);
+    }
+
+    return qpci_io_readb(dev->pdev, dev->bar, dev->isr_cfg_offset) & 1;
+}
+
+static bool get_config_isr_status(QVirtioDevice *d)
+{
+    QVirtioPCIDevice *dev = container_of(d, QVirtioPCIDevice, vdev);
+
+    if (dev->pdev->msix_enabled) {
+        return get_msix_status(dev, dev->config_msix_entry,
+                               dev->config_msix_addr, dev->config_msix_data);
+    }
+
+    return qpci_io_readb(dev->pdev, dev->bar, dev->isr_cfg_offset) & 2;
+}
+
+static void wait_config_isr_status(QVirtioDevice *d, gint64 timeout_us)
+{
+    QVirtioPCIDevice *dev = container_of(d, QVirtioPCIDevice, vdev);
+    gint64 start_time = g_get_monotonic_time();
+
+    do {
+        g_assert(g_get_monotonic_time() - start_time <= timeout_us);
+        qtest_clock_step(dev->pdev->bus->qts, 100);
+    } while (!get_config_isr_status(d));
+}
+
+static void queue_select(QVirtioDevice *d, uint16_t index)
+{
+    QVirtioPCIDevice *dev = container_of(d, QVirtioPCIDevice, vdev);
+
+    qpci_io_writew(dev->pdev, dev->bar, dev->common_cfg_offset +
+                   offsetof(struct virtio_pci_common_cfg, queue_select),
+                   index);
+}
+
+static uint16_t get_queue_size(QVirtioDevice *d)
+{
+    QVirtioPCIDevice *dev = container_of(d, QVirtioPCIDevice, vdev);
+
+    return qpci_io_readw(dev->pdev, dev->bar, dev->common_cfg_offset +
+                         offsetof(struct virtio_pci_common_cfg, queue_size));
+}
+
+static void set_queue_address(QVirtioDevice *d, QVirtQueue *vq)
+{
+    QVirtioPCIDevice *dev = container_of(d, QVirtioPCIDevice, vdev);
+
+    qpci_io_writel(dev->pdev, dev->bar, dev->common_cfg_offset +
+                   offsetof(struct virtio_pci_common_cfg, queue_desc_lo),
+                   vq->desc);
+    qpci_io_writel(dev->pdev, dev->bar, dev->common_cfg_offset +
+                   offsetof(struct virtio_pci_common_cfg, queue_desc_hi),
+                   vq->desc >> 32);
+
+    qpci_io_writel(dev->pdev, dev->bar, dev->common_cfg_offset +
+                   offsetof(struct virtio_pci_common_cfg, queue_avail_lo),
+                   vq->avail);
+    qpci_io_writel(dev->pdev, dev->bar, dev->common_cfg_offset +
+                   offsetof(struct virtio_pci_common_cfg, queue_avail_hi),
+                   vq->avail >> 32);
+
+    qpci_io_writel(dev->pdev, dev->bar, dev->common_cfg_offset +
+                   offsetof(struct virtio_pci_common_cfg, queue_used_lo),
+                   vq->used);
+    qpci_io_writel(dev->pdev, dev->bar, dev->common_cfg_offset +
+                   offsetof(struct virtio_pci_common_cfg, queue_used_hi),
+                   vq->used >> 32);
+}
+
+static QVirtQueue *virtqueue_setup(QVirtioDevice *d, QGuestAllocator *alloc, uint16_t index)
+{
+    QVirtioPCIDevice *dev = container_of(d, QVirtioPCIDevice, vdev);
+    QVirtQueue *vq;
+    QVirtQueuePCI *vqpci;
+    uint16_t notify_off;
+
+    vq = qvirtio_pci_virtqueue_setup_common(d, alloc, index);
+    vqpci = container_of(vq, QVirtQueuePCI, vq);
+
+    notify_off = qpci_io_readw(dev->pdev, dev->bar, dev->common_cfg_offset +
+                               offsetof(struct virtio_pci_common_cfg,
+                                        queue_notify_off));
+
+    vqpci->notify_offset = dev->notify_cfg_offset +
+                           notify_off * dev->notify_off_multiplier;
+
+    qpci_io_writew(dev->pdev, dev->bar, dev->common_cfg_offset +
+                   offsetof(struct virtio_pci_common_cfg, queue_enable), 1);
+
+    return vq;
+}
+
+static void virtqueue_kick(QVirtioDevice *d, QVirtQueue *vq)
+{
+    QVirtioPCIDevice *dev = container_of(d, QVirtioPCIDevice, vdev);
+    QVirtQueuePCI *vqpci = container_of(vq, QVirtQueuePCI, vq);
+
+    qpci_io_writew(dev->pdev, dev->bar, vqpci->notify_offset, vq->index);
+}
+
+static const QVirtioBus qvirtio_pci_virtio_1 = {
+    .config_readb = config_readb,
+    .config_readw = config_readw,
+    .config_readl = config_readl,
+    .config_readq = config_readq,
+    .get_features = get_features,
+    .set_features = set_features,
+    .get_guest_features = get_guest_features,
+    .get_status = get_status,
+    .set_status = set_status,
+    .get_queue_isr_status = get_queue_isr_status,
+    .wait_config_isr_status = wait_config_isr_status,
+    .queue_select = queue_select,
+    .get_queue_size = get_queue_size,
+    .set_queue_address = set_queue_address,
+    .virtqueue_setup = virtqueue_setup,
+    .virtqueue_cleanup = qvirtio_pci_virtqueue_cleanup_common,
+    .virtqueue_kick = virtqueue_kick,
+};
+
+static void set_config_vector(QVirtioPCIDevice *d, uint16_t entry)
+{
+    uint16_t vector;
+
+    qpci_io_writew(d->pdev, d->bar, d->common_cfg_offset +
+                   offsetof(struct virtio_pci_common_cfg, msix_config), entry);
+    vector = qpci_io_readw(d->pdev, d->bar, d->common_cfg_offset +
+                           offsetof(struct virtio_pci_common_cfg,
+                                    msix_config));
+    g_assert_cmphex(vector, !=, VIRTIO_MSI_NO_VECTOR);
+}
+
+static void set_queue_vector(QVirtioPCIDevice *d, uint16_t vq_idx, uint16_t entry)
+{
+    uint16_t vector;
+
+    queue_select(&d->vdev, vq_idx);
+    qpci_io_writew(d->pdev, d->bar, d->common_cfg_offset +
+                   offsetof(struct virtio_pci_common_cfg, queue_msix_vector),
+                   entry);
+    vector = qpci_io_readw(d->pdev, d->bar, d->common_cfg_offset +
+                           offsetof(struct virtio_pci_common_cfg,
+                                    queue_msix_vector));
+    g_assert_cmphex(vector, !=, VIRTIO_MSI_NO_VECTOR);
+}
+
+static const QVirtioPCIMSIXOps qvirtio_pci_msix_ops_virtio_1 = {
+    .set_config_vector = set_config_vector,
+    .set_queue_vector = set_queue_vector,
+};
+
+static bool probe_device_type(QVirtioPCIDevice *dev)
+{
+    uint16_t vendor_id;
+    uint16_t device_id;
+
+    /* "Drivers MUST match devices with the PCI Vendor ID 0x1AF4" */
+    vendor_id = qpci_config_readw(dev->pdev, PCI_VENDOR_ID);
+    if (vendor_id != 0x1af4) {
+        return false;
+    }
+
+    /* "Any PCI device with ... PCI Device ID 0x1000 through 0x107F inclusive
+     * is a virtio device"
+     */
+    device_id = qpci_config_readw(dev->pdev, PCI_DEVICE_ID);
+    if (device_id < 0x1000 || device_id > 0x107f) {
+        return false;
+    }
+
+    /* "Devices MAY utilize a Transitional PCI Device ID range, 0x1000 to
+     * 0x103F depending on the device type"
+     */
+    if (device_id < 0x1040) {
+        /* "Transitional devices MUST have the PCI Subsystem Device ID matching
+         * the Virtio Device ID"
+         */
+        dev->vdev.device_type = qpci_config_readw(dev->pdev, PCI_SUBSYSTEM_ID);
+    } else {
+        /* "The PCI Device ID is calculated by adding 0x1040 to the Virtio
+         * Device ID"
+         */
+        dev->vdev.device_type = device_id - 0x1040;
+    }
+
+    return true;
+}
+
+/* Find the first VIRTIO 1.0 PCI structure for a given type */
+static bool find_structure(QVirtioPCIDevice *dev, uint8_t cfg_type,
+                           uint8_t *bar, uint32_t *offset, uint32_t *length,
+                           uint8_t *cfg_addr)
+{
+    uint8_t addr = 0;
+
+    while ((addr = qpci_find_capability(dev->pdev, PCI_CAP_ID_VNDR,
+                                        addr)) != 0) {
+        uint8_t type;
+
+        type = qpci_config_readb(dev->pdev,
+                addr + offsetof(struct virtio_pci_cap, cfg_type));
+        if (type != cfg_type) {
+            continue;
+        }
+
+        *bar = qpci_config_readb(dev->pdev,
+                addr + offsetof(struct virtio_pci_cap, bar));
+        *offset = qpci_config_readl(dev->pdev,
+                addr + offsetof(struct virtio_pci_cap, offset));
+        *length = qpci_config_readl(dev->pdev,
+                addr + offsetof(struct virtio_pci_cap, length));
+        if (cfg_addr) {
+            *cfg_addr = addr;
+        }
+
+        return true;
+    }
+
+    return false;
+}
+
+static bool probe_device_layout(QVirtioPCIDevice *dev)
+{
+    uint8_t bar;
+    uint8_t cfg_addr;
+    uint32_t length;
+
+    /* Due to the qpci_iomap() API we only support devices that put all
+     * structures in the same PCI BAR.  Luckily this is true with QEMU.
+     */
+
+    if (!find_structure(dev, VIRTIO_PCI_CAP_COMMON_CFG, &dev->bar_idx,
+                        &dev->common_cfg_offset, &length, NULL)) {
+        return false;
+    }
+
+    if (!find_structure(dev, VIRTIO_PCI_CAP_NOTIFY_CFG, &bar,
+                        &dev->notify_cfg_offset, &length, &cfg_addr)) {
+        return false;
+    }
+    g_assert_cmphex(bar, ==, dev->bar_idx);
+
+    dev->notify_off_multiplier = qpci_config_readl(dev->pdev,
+            cfg_addr + offsetof(struct virtio_pci_notify_cap,
+                                notify_off_multiplier));
+
+    if (!find_structure(dev, VIRTIO_PCI_CAP_ISR_CFG, &bar,
+                        &dev->isr_cfg_offset, &length, NULL)) {
+        return false;
+    }
+    g_assert_cmphex(bar, ==, dev->bar_idx);
+
+    if (!find_structure(dev, VIRTIO_PCI_CAP_DEVICE_CFG, &bar,
+                        &dev->device_cfg_offset, &length, NULL)) {
+        return false;
+    }
+    g_assert_cmphex(bar, ==, dev->bar_idx);
+
+    return true;
+}
+
+/* Probe a VIRTIO 1.0 device */
+bool qvirtio_pci_init_virtio_1(QVirtioPCIDevice *dev)
+{
+    if (!probe_device_type(dev)) {
+        return false;
+    }
+
+    if (!probe_device_layout(dev)) {
+        return false;
+    }
+
+    dev->vdev.bus = &qvirtio_pci_virtio_1;
+    dev->msix_ops = &qvirtio_pci_msix_ops_virtio_1;
+    dev->vdev.big_endian = false;
+    return true;
+}
diff --git a/tests/libqos/virtio-pci.c b/tests/libqos/virtio-pci.c
index 08451cb7f7..9ab79f19c9 100644
--- a/tests/libqos/virtio-pci.c
+++ b/tests/libqos/virtio-pci.c
@@ -22,6 +22,8 @@
 #include "hw/pci/pci.h"
 #include "hw/pci/pci_regs.h"
 
+#include "virtio-pci-modern.h"
+
 /* virtio-pci is a superclass of all virtio-xxx-pci devices;
  * the relation between virtio-pci and virtio-xxx-pci is implicit,
  * and therefore virtio-pci does not produce virtio and is not
@@ -399,7 +401,9 @@ static void qvirtio_pci_init_from_pcidev(QVirtioPCIDevice *dev, QPCIDevice *pci_
     dev->pdev = pci_dev;
     dev->config_msix_entry = -1;
 
-    qvirtio_pci_init_legacy(dev);
+    if (!qvirtio_pci_init_virtio_1(dev)) {
+        qvirtio_pci_init_legacy(dev);
+    }
 
     /* each virtio-xxx-pci device should override at least this function */
     dev->obj.get_driver = NULL;
-- 
2.21.0

Re: [PATCH 0/7] libqos: add VIRTIO PCI 1.0 support

[no-reply]

Patchew URL: https://patchew.org/QEMU/20191010155853.4325-1-stefanha@redhat.com/



Hi,

This series seems to have some coding style problems. See output below for
more information:

Subject: [PATCH 0/7] libqos: add VIRTIO PCI 1.0 support
Type: series
Message-id: 20191010155853.4325-1-stefanha@redhat.com

=== TEST SCRIPT BEGIN ===
#!/bin/bash
git rev-parse base > /dev/null || exit 0
git config --local diff.renamelimit 0
git config --local diff.renames True
git config --local diff.algorithm histogram
./scripts/checkpatch.pl --mailback base..
=== TEST SCRIPT END ===

Switched to a new branch 'test'
f7c9309 libqos: add VIRTIO PCI 1.0 support
f382525 libqos: make the virtio-pci BAR index configurable
e0aeef1 libqos: expose common virtqueue setup/cleanup functions
e3477ab libqos: add MSI-X callbacks to QVirtioPCIDevice
0042dff libqos: pass full QVirtQueue to set_queue_address()
631d620 libqos: add iteration support to qpci_find_capability()
29a23f9 libqos: extract Legacy virtio-pci.c code

=== OUTPUT BEGIN ===
1/7 Checking commit 29a23f95d7cf (libqos: extract Legacy virtio-pci.c code)
2/7 Checking commit 631d6200075a (libqos: add iteration support to qpci_find_capability())
3/7 Checking commit 0042dff221ea (libqos: pass full QVirtQueue to set_queue_address())
4/7 Checking commit e3477ab2dc8e (libqos: add MSI-X callbacks to QVirtioPCIDevice)
ERROR: line over 90 characters
#31: FILE: tests/libqos/virtio-pci.c:283:
+static void qvirtio_pci_set_queue_vector(QVirtioPCIDevice *d, uint16_t vq_idx, uint16_t entry)

total: 1 errors, 0 warnings, 99 lines checked

Patch 4/7 has style problems, please review.  If any of these errors
are false positives report them to the maintainer, see
CHECKPATCH in MAINTAINERS.

5/7 Checking commit e0aeef123dc1 (libqos: expose common virtqueue setup/cleanup functions)
6/7 Checking commit f382525d6da2 (libqos: make the virtio-pci BAR index configurable)
7/7 Checking commit f7c93099d7df (libqos: add VIRTIO PCI 1.0 support)
WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#33: 
new file mode 100644

ERROR: line over 90 characters
#235: FILE: tests/libqos/virtio-pci-modern.c:198:
+static QVirtQueue *virtqueue_setup(QVirtioDevice *d, QGuestAllocator *alloc, uint16_t index)

WARNING: line over 80 characters
#298: FILE: tests/libqos/virtio-pci-modern.c:261:
+static void set_queue_vector(QVirtioPCIDevice *d, uint16_t vq_idx, uint16_t entry)

WARNING: Block comments use a leading /* on a separate line
#328: FILE: tests/libqos/virtio-pci-modern.c:291:
+    /* "Any PCI device with ... PCI Device ID 0x1000 through 0x107F inclusive

WARNING: Block comments use a leading /* on a separate line
#336: FILE: tests/libqos/virtio-pci-modern.c:299:
+    /* "Devices MAY utilize a Transitional PCI Device ID range, 0x1000 to

WARNING: Block comments use a leading /* on a separate line
#340: FILE: tests/libqos/virtio-pci-modern.c:303:
+        /* "Transitional devices MUST have the PCI Subsystem Device ID matching

WARNING: Block comments use a leading /* on a separate line
#345: FILE: tests/libqos/virtio-pci-modern.c:308:
+        /* "The PCI Device ID is calculated by adding 0x1040 to the Virtio

WARNING: Block comments use a leading /* on a separate line
#393: FILE: tests/libqos/virtio-pci-modern.c:356:
+    /* Due to the qpci_iomap() API we only support devices that put all

total: 1 errors, 7 warnings, 469 lines checked

Patch 7/7 has style problems, please review.  If any of these errors
are false positives report them to the maintainer, see
CHECKPATCH in MAINTAINERS.

=== OUTPUT END ===

Test command exited with code: 1


The full log is available at
http://patchew.org/logs/20191010155853.4325-1-stefanha@redhat.com/testing.checkpatch/?type=message.
---
Email generated automatically by Patchew [https://patchew.org/].
Please send your feedback to patchew-devel@redhat.com

Re: [PATCH 0/7] libqos: add VIRTIO PCI 1.0 support

[Stefan Hajnoczi]

[-- Attachment #1: Type: text/plain, Size: 1887 bytes --]

On Thu, Oct 10, 2019 at 02:12:00PM -0700, no-reply@patchew.org wrote:
> 4/7 Checking commit e3477ab2dc8e (libqos: add MSI-X callbacks to QVirtioPCIDevice)
> ERROR: line over 90 characters
> #31: FILE: tests/libqos/virtio-pci.c:283:
> +static void qvirtio_pci_set_queue_vector(QVirtioPCIDevice *d, uint16_t vq_idx, uint16_t entry)
[...]
> 7/7 Checking commit f7c93099d7df (libqos: add VIRTIO PCI 1.0 support)
> WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
[...]
> ERROR: line over 90 characters
> #235: FILE: tests/libqos/virtio-pci-modern.c:198:
> +static QVirtQueue *virtqueue_setup(QVirtioDevice *d, QGuestAllocator *alloc, uint16_t index)
> 
> WARNING: line over 80 characters
> #298: FILE: tests/libqos/virtio-pci-modern.c:261:
> +static void set_queue_vector(QVirtioPCIDevice *d, uint16_t vq_idx, uint16_t entry)
> 
> WARNING: Block comments use a leading /* on a separate line
> #328: FILE: tests/libqos/virtio-pci-modern.c:291:
> +    /* "Any PCI device with ... PCI Device ID 0x1000 through 0x107F inclusive
> 
> WARNING: Block comments use a leading /* on a separate line
> #336: FILE: tests/libqos/virtio-pci-modern.c:299:
> +    /* "Devices MAY utilize a Transitional PCI Device ID range, 0x1000 to
> 
> WARNING: Block comments use a leading /* on a separate line
> #340: FILE: tests/libqos/virtio-pci-modern.c:303:
> +        /* "Transitional devices MUST have the PCI Subsystem Device ID matching
> 
> WARNING: Block comments use a leading /* on a separate line
> #345: FILE: tests/libqos/virtio-pci-modern.c:308:
> +        /* "The PCI Device ID is calculated by adding 0x1040 to the Virtio
> 
> WARNING: Block comments use a leading /* on a separate line
> #393: FILE: tests/libqos/virtio-pci-modern.c:356:
> +    /* Due to the qpci_iomap() API we only support devices that put all

Will fix these in v2.

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