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Subject: [PATCH v8 09/28] vfio: split out VFIOKernelPCIDevice
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From: Jagannathan Raman <jag.raman@oracle.com>
Split out code specific to the kernel-side vfio implementation from the
VFIOPCIDevice class into a VFIOKernelPCIDevice. The forthcoming
VFIOUserPCIDevice will share the base VFIOPCIDevice class.
Originally-by: John Johnson <john.g.johnson@oracle.com>
Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com>
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Signed-off-by: John Levon <john.levon@nutanix.com>
---
hw/vfio/helpers.c | 2 +-
hw/vfio/pci.c | 107 ++++++++++++++++++++++++++++------------------
hw/vfio/pci.h | 16 ++++++-
3 files changed, 80 insertions(+), 45 deletions(-)
diff --git a/hw/vfio/helpers.c b/hw/vfio/helpers.c
index 3c923d23b9..94bbc5747c 100644
--- a/hw/vfio/helpers.c
+++ b/hw/vfio/helpers.c
@@ -744,7 +744,7 @@ bool vfio_device_hiod_realize(VFIODevice *vbasedev, Err=
or **errp)
VFIODevice *vfio_get_vfio_device(Object *obj)
{
if (object_dynamic_cast(obj, TYPE_VFIO_PCI)) {
- return &VFIO_PCI(obj)->vbasedev;
+ return &VFIO_PCI(obj)->device.vbasedev;
} else {
return NULL;
}
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index a4f99fc5e0..812743e9dd 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -239,7 +239,7 @@ static void vfio_intx_update(VFIOPCIDevice *vdev, PCIIN=
TxRoute *route)
=20
static void vfio_intx_routing_notifier(PCIDevice *pdev)
{
- VFIOPCIDevice *vdev =3D VFIO_PCI(pdev);
+ VFIOPCIDevice *vdev =3D VFIO_PCI_BASE(pdev);
PCIINTxRoute route;
=20
if (vdev->interrupt !=3D VFIO_INT_INTx) {
@@ -514,7 +514,7 @@ static void vfio_update_kvm_msi_virq(VFIOMSIVector *vec=
tor, MSIMessage msg,
static int vfio_msix_vector_do_use(PCIDevice *pdev, unsigned int nr,
MSIMessage *msg, IOHandler *handler)
{
- VFIOPCIDevice *vdev =3D VFIO_PCI(pdev);
+ VFIOPCIDevice *vdev =3D VFIO_PCI_BASE(pdev);
VFIOMSIVector *vector;
int ret;
bool resizing =3D !!(vdev->nr_vectors < nr + 1);
@@ -619,7 +619,7 @@ static int vfio_msix_vector_use(PCIDevice *pdev,
=20
static void vfio_msix_vector_release(PCIDevice *pdev, unsigned int nr)
{
- VFIOPCIDevice *vdev =3D VFIO_PCI(pdev);
+ VFIOPCIDevice *vdev =3D VFIO_PCI_BASE(pdev);
VFIOMSIVector *vector =3D &vdev->msi_vectors[nr];
=20
trace_vfio_msix_vector_release(vdev->vbasedev.name, nr);
@@ -1167,7 +1167,7 @@ static const MemoryRegionOps vfio_vga_ops =3D {
*/
static void vfio_sub_page_bar_update_mapping(PCIDevice *pdev, int bar)
{
- VFIOPCIDevice *vdev =3D VFIO_PCI(pdev);
+ VFIOPCIDevice *vdev =3D VFIO_PCI_BASE(pdev);
VFIORegion *region =3D &vdev->bars[bar].region;
MemoryRegion *mmap_mr, *region_mr, *base_mr;
PCIIORegion *r;
@@ -1213,7 +1213,7 @@ static void vfio_sub_page_bar_update_mapping(PCIDevic=
e *pdev, int bar)
*/
uint32_t vfio_pci_read_config(PCIDevice *pdev, uint32_t addr, int len)
{
- VFIOPCIDevice *vdev =3D VFIO_PCI(pdev);
+ VFIOPCIDevice *vdev =3D VFIO_PCI_BASE(pdev);
uint32_t emu_bits =3D 0, emu_val =3D 0, phys_val =3D 0, val;
=20
memcpy(&emu_bits, vdev->emulated_config_bits + addr, len);
@@ -1246,7 +1246,7 @@ uint32_t vfio_pci_read_config(PCIDevice *pdev, uint32=
_t addr, int len)
void vfio_pci_write_config(PCIDevice *pdev,
uint32_t addr, uint32_t val, int len)
{
- VFIOPCIDevice *vdev =3D VFIO_PCI(pdev);
+ VFIOPCIDevice *vdev =3D VFIO_PCI_BASE(pdev);
uint32_t val_le =3D cpu_to_le32(val);
=20
trace_vfio_pci_write_config(vdev->vbasedev.name, addr, val, len);
@@ -3084,7 +3084,7 @@ static bool vfio_interrupt_setup(VFIOPCIDevice *vdev,=
Error **errp)
static void vfio_realize(PCIDevice *pdev, Error **errp)
{
ERRP_GUARD();
- VFIOPCIDevice *vdev =3D VFIO_PCI(pdev);
+ VFIOPCIDevice *vdev =3D VFIO_PCI_BASE(pdev);
VFIODevice *vbasedev =3D &vdev->vbasedev;
int i, ret;
char uuid[UUID_STR_LEN];
@@ -3274,7 +3274,7 @@ error:
=20
static void vfio_instance_finalize(Object *obj)
{
- VFIOPCIDevice *vdev =3D VFIO_PCI(obj);
+ VFIOPCIDevice *vdev =3D VFIO_PCI_BASE(obj);
=20
vfio_display_finalize(vdev);
vfio_bars_finalize(vdev);
@@ -3292,7 +3292,7 @@ static void vfio_instance_finalize(Object *obj)
=20
static void vfio_exitfn(PCIDevice *pdev)
{
- VFIOPCIDevice *vdev =3D VFIO_PCI(pdev);
+ VFIOPCIDevice *vdev =3D VFIO_PCI_BASE(pdev);
VFIODevice *vbasedev =3D &vdev->vbasedev;
=20
vfio_unregister_req_notifier(vdev);
@@ -3316,7 +3316,7 @@ static void vfio_exitfn(PCIDevice *pdev)
=20
static void vfio_pci_reset(DeviceState *dev)
{
- VFIOPCIDevice *vdev =3D VFIO_PCI(dev);
+ VFIOPCIDevice *vdev =3D VFIO_PCI_BASE(dev);
=20
trace_vfio_pci_reset(vdev->vbasedev.name);
=20
@@ -3356,7 +3356,7 @@ post_reset:
static void vfio_instance_init(Object *obj)
{
PCIDevice *pci_dev =3D PCI_DEVICE(obj);
- VFIOPCIDevice *vdev =3D VFIO_PCI(obj);
+ VFIOPCIDevice *vdev =3D VFIO_PCI_BASE(obj);
VFIODevice *vbasedev =3D &vdev->vbasedev;
=20
device_add_bootindex_property(obj, &vdev->bootindex,
@@ -3377,28 +3377,15 @@ static void vfio_instance_init(Object *obj)
pci_dev->cap_present |=3D QEMU_PCI_CAP_EXPRESS;
}
=20
-static const Property vfio_pci_dev_properties[] =3D {
- DEFINE_PROP_PCI_HOST_DEVADDR("host", VFIOPCIDevice, host),
- DEFINE_PROP_UUID_NODEFAULT("vf-token", VFIOPCIDevice, vf_token),
- DEFINE_PROP_STRING("sysfsdev", VFIOPCIDevice, vbasedev.sysfsdev),
+static const Property vfio_pci_base_dev_properties[] =3D {
DEFINE_PROP_ON_OFF_AUTO("x-pre-copy-dirty-page-tracking", VFIOPCIDevic=
e,
vbasedev.pre_copy_dirty_page_tracking,
ON_OFF_AUTO_ON),
DEFINE_PROP_ON_OFF_AUTO("x-device-dirty-page-tracking", VFIOPCIDevice,
vbasedev.device_dirty_page_tracking,
ON_OFF_AUTO_ON),
- DEFINE_PROP_ON_OFF_AUTO("display", VFIOPCIDevice,
- display, ON_OFF_AUTO_OFF),
- DEFINE_PROP_UINT32("xres", VFIOPCIDevice, display_xres, 0),
- DEFINE_PROP_UINT32("yres", VFIOPCIDevice, display_yres, 0),
DEFINE_PROP_UINT32("x-intx-mmap-timeout-ms", VFIOPCIDevice,
intx.mmap_timeout, 1100),
- DEFINE_PROP_BIT("x-vga", VFIOPCIDevice, features,
- VFIO_FEATURE_ENABLE_VGA_BIT, false),
- DEFINE_PROP_BIT("x-req", VFIOPCIDevice, features,
- VFIO_FEATURE_ENABLE_REQ_BIT, true),
- DEFINE_PROP_BIT("x-igd-opregion", VFIOPCIDevice, features,
- VFIO_FEATURE_ENABLE_IGD_OPREGION_BIT, false),
DEFINE_PROP_ON_OFF_AUTO("enable-migration", VFIOPCIDevice,
vbasedev.enable_migration, ON_OFF_AUTO_AUTO),
DEFINE_PROP_BOOL("migration-events", VFIOPCIDevice,
@@ -3409,8 +3396,6 @@ static const Property vfio_pci_dev_properties[] =3D {
DEFINE_PROP_BOOL("x-no-kvm-intx", VFIOPCIDevice, no_kvm_intx, false),
DEFINE_PROP_BOOL("x-no-kvm-msi", VFIOPCIDevice, no_kvm_msi, false),
DEFINE_PROP_BOOL("x-no-kvm-msix", VFIOPCIDevice, no_kvm_msix, false),
- DEFINE_PROP_BOOL("x-no-geforce-quirks", VFIOPCIDevice,
- no_geforce_quirks, false),
DEFINE_PROP_BOOL("x-no-kvm-ioeventfd", VFIOPCIDevice, no_kvm_ioeventfd,
false),
DEFINE_PROP_BOOL("x-no-vfio-ioeventfd", VFIOPCIDevice, no_vfio_ioevent=
fd,
@@ -3421,12 +3406,57 @@ static const Property vfio_pci_dev_properties[] =3D=
{
sub_vendor_id, PCI_ANY_ID),
DEFINE_PROP_UINT32("x-pci-sub-device-id", VFIOPCIDevice,
sub_device_id, PCI_ANY_ID),
+ DEFINE_PROP_OFF_AUTO_PCIBAR("x-msix-relocation", VFIOPCIDevice, msix_r=
elo,
+ OFF_AUTO_PCIBAR_OFF),
+};
+
+
+static void vfio_pci_base_dev_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc =3D DEVICE_CLASS(klass);
+ PCIDeviceClass *pdc =3D PCI_DEVICE_CLASS(klass);
+
+ device_class_set_props(dc, vfio_pci_base_dev_properties);
+ dc->desc =3D "VFIO PCI base device";
+ set_bit(DEVICE_CATEGORY_MISC, dc->categories);
+ pdc->exit =3D vfio_exitfn;
+ pdc->config_read =3D vfio_pci_read_config;
+ pdc->config_write =3D vfio_pci_write_config;
+}
+
+static const TypeInfo vfio_pci_base_dev_info =3D {
+ .name =3D TYPE_VFIO_PCI_BASE,
+ .parent =3D TYPE_PCI_DEVICE,
+ .instance_size =3D 0,
+ .abstract =3D true,
+ .class_init =3D vfio_pci_base_dev_class_init,
+ .interfaces =3D (InterfaceInfo[]) {
+ { INTERFACE_PCIE_DEVICE },
+ { INTERFACE_CONVENTIONAL_PCI_DEVICE },
+ { }
+ },
+};
+
+static const Property vfio_pci_dev_properties[] =3D {
+ DEFINE_PROP_PCI_HOST_DEVADDR("host", VFIOPCIDevice, host),
+ DEFINE_PROP_UUID_NODEFAULT("vf-token", VFIOPCIDevice, vf_token),
+ DEFINE_PROP_STRING("sysfsdev", VFIOPCIDevice, vbasedev.sysfsdev),
+ DEFINE_PROP_ON_OFF_AUTO("display", VFIOPCIDevice,
+ display, ON_OFF_AUTO_OFF),
+ DEFINE_PROP_UINT32("xres", VFIOPCIDevice, display_xres, 0),
+ DEFINE_PROP_UINT32("yres", VFIOPCIDevice, display_yres, 0),
+ DEFINE_PROP_BIT("x-vga", VFIOPCIDevice, features,
+ VFIO_FEATURE_ENABLE_VGA_BIT, false),
+ DEFINE_PROP_BIT("x-req", VFIOPCIDevice, features,
+ VFIO_FEATURE_ENABLE_REQ_BIT, true),
+ DEFINE_PROP_BIT("x-igd-opregion", VFIOPCIDevice, features,
+ VFIO_FEATURE_ENABLE_IGD_OPREGION_BIT, false),
+ DEFINE_PROP_BOOL("x-no-geforce-quirks", VFIOPCIDevice,
+ no_geforce_quirks, false),
DEFINE_PROP_UINT32("x-igd-gms", VFIOPCIDevice, igd_gms, 0),
DEFINE_PROP_UNSIGNED_NODEFAULT("x-nv-gpudirect-clique", VFIOPCIDevice,
nv_gpudirect_clique,
qdev_prop_nv_gpudirect_clique, uint8_t),
- DEFINE_PROP_OFF_AUTO_PCIBAR("x-msix-relocation", VFIOPCIDevice, msix_r=
elo,
- OFF_AUTO_PCIBAR_OFF),
#ifdef CONFIG_IOMMUFD
DEFINE_PROP_LINK("iommufd", VFIOPCIDevice, vbasedev.iommufd,
TYPE_IOMMUFD_BACKEND, IOMMUFDBackend *),
@@ -3437,7 +3467,8 @@ static const Property vfio_pci_dev_properties[] =3D {
#ifdef CONFIG_IOMMUFD
static void vfio_pci_set_fd(Object *obj, const char *str, Error **errp)
{
- vfio_device_set_fd(&VFIO_PCI(obj)->vbasedev, str, errp);
+ VFIOPCIDevice *vdev =3D VFIO_PCI_BASE(obj);
+ vfio_device_set_fd(&vdev->vbasedev, str, errp);
}
#endif
=20
@@ -3452,25 +3483,16 @@ static void vfio_pci_dev_class_init(ObjectClass *kl=
ass, void *data)
object_class_property_add_str(klass, "fd", NULL, vfio_pci_set_fd);
#endif
dc->desc =3D "VFIO-based PCI device assignment";
- set_bit(DEVICE_CATEGORY_MISC, dc->categories);
pdc->realize =3D vfio_realize;
- pdc->exit =3D vfio_exitfn;
- pdc->config_read =3D vfio_pci_read_config;
- pdc->config_write =3D vfio_pci_write_config;
}
=20
static const TypeInfo vfio_pci_dev_info =3D {
.name =3D TYPE_VFIO_PCI,
- .parent =3D TYPE_PCI_DEVICE,
- .instance_size =3D sizeof(VFIOPCIDevice),
+ .parent =3D TYPE_VFIO_PCI_BASE,
+ .instance_size =3D sizeof(VFIOKernelPCIDevice),
.class_init =3D vfio_pci_dev_class_init,
.instance_init =3D vfio_instance_init,
.instance_finalize =3D vfio_instance_finalize,
- .interfaces =3D (InterfaceInfo[]) {
- { INTERFACE_PCIE_DEVICE },
- { INTERFACE_CONVENTIONAL_PCI_DEVICE },
- { }
- },
};
=20
static const Property vfio_pci_dev_nohotplug_properties[] =3D {
@@ -3490,12 +3512,13 @@ static void vfio_pci_nohotplug_dev_class_init(Objec=
tClass *klass, void *data)
static const TypeInfo vfio_pci_nohotplug_dev_info =3D {
.name =3D TYPE_VFIO_PCI_NOHOTPLUG,
.parent =3D TYPE_VFIO_PCI,
- .instance_size =3D sizeof(VFIOPCIDevice),
+ .instance_size =3D sizeof(VFIOKernelPCIDevice),
.class_init =3D vfio_pci_nohotplug_dev_class_init,
};
=20
static void register_vfio_pci_dev_type(void)
{
+ type_register_static(&vfio_pci_base_dev_info);
type_register_static(&vfio_pci_dev_info);
type_register_static(&vfio_pci_nohotplug_dev_info);
}
diff --git a/hw/vfio/pci.h b/hw/vfio/pci.h
index 43c166680a..8e79740ddb 100644
--- a/hw/vfio/pci.h
+++ b/hw/vfio/pci.h
@@ -116,8 +116,13 @@ typedef struct VFIOMSIXInfo {
bool noresize;
} VFIOMSIXInfo;
=20
-#define TYPE_VFIO_PCI "vfio-pci"
-OBJECT_DECLARE_SIMPLE_TYPE(VFIOPCIDevice, VFIO_PCI)
+/*
+ * TYPE_VFIO_PCI_BASE is an abstract type used to share code
+ * between VFIO implementations that use a kernel driver
+ * with those that use user sockets.
+ */
+#define TYPE_VFIO_PCI_BASE "vfio-pci-base"
+OBJECT_DECLARE_SIMPLE_TYPE(VFIOPCIDevice, VFIO_PCI_BASE)
=20
struct VFIOPCIDevice {
PCIDevice pdev;
@@ -182,6 +187,13 @@ struct VFIOPCIDevice {
Notifier irqchip_change_notifier;
};
=20
+#define TYPE_VFIO_PCI "vfio-pci"
+OBJECT_DECLARE_SIMPLE_TYPE(VFIOKernelPCIDevice, VFIO_PCI)
+
+struct VFIOKernelPCIDevice {
+ VFIOPCIDevice device;
+};
+
/* Use uin32_t for vendor & device so PCI_ANY_ID expands and cannot match =
hw */
static inline bool vfio_pci_is(VFIOPCIDevice *vdev, uint32_t vendor, uint3=
2_t device)
{
--=20
2.34.1