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[PATCH 1/7] libqos: extract Legacy virtio-pci.c code
From: |
Stefan Hajnoczi |
Subject: |
[PATCH 1/7] libqos: extract Legacy virtio-pci.c code |
Date: |
Thu, 10 Oct 2019 16:58:47 +0100 |
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 <address@hidden>
---
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 0/7] libqos: add VIRTIO PCI 1.0 support, Stefan Hajnoczi, 2019/10/10
- [PATCH 1/7] libqos: extract Legacy virtio-pci.c code,
Stefan Hajnoczi <=
- [PATCH 2/7] libqos: add iteration support to qpci_find_capability(), Stefan Hajnoczi, 2019/10/10
- [PATCH 3/7] libqos: pass full QVirtQueue to set_queue_address(), Stefan Hajnoczi, 2019/10/10
- [PATCH 4/7] libqos: add MSI-X callbacks to QVirtioPCIDevice, Stefan Hajnoczi, 2019/10/10
- [PATCH 5/7] libqos: expose common virtqueue setup/cleanup functions, Stefan Hajnoczi, 2019/10/10
- [PATCH 6/7] libqos: make the virtio-pci BAR index configurable, Stefan Hajnoczi, 2019/10/10
- [PATCH 7/7] libqos: add VIRTIO PCI 1.0 support, Stefan Hajnoczi, 2019/10/10
- Re: [PATCH 0/7] libqos: add VIRTIO PCI 1.0 support, no-reply, 2019/10/10