This patch converts VFIO PCI to realize function.
Also original initfn errors now are propagated using QEMU
error objects. All errors are formatted with the same pattern:
"vfio: %s: the error description"
Signed-off-by: Eric Auger <eric.au...@redhat.com>
---
v1 -> v2:
- correct error_setg_errno with positive error values
---
hw/vfio/pci.c | 52 ++++++++++++++++++++++------------------------------
hw/vfio/trace-events | 2 +-
2 files changed, 23 insertions(+), 31 deletions(-)
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index 3d43718..857d89f 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -2511,7 +2511,7 @@ static void vfio_unregister_req_notifier(VFIOPCIDevice
*vdev)
vdev->req_enabled = false;
}
-static int vfio_initfn(PCIDevice *pdev)
+static void vfio_realize(PCIDevice *pdev, Error **errp)
{
VFIOPCIDevice *vdev = DO_UPCAST(VFIOPCIDevice, pdev, pdev);
VFIODevice *vbasedev_iter;
@@ -2531,9 +2531,9 @@ static int vfio_initfn(PCIDevice *pdev)
}
if (stat(vdev->vbasedev.sysfsdev, &st) < 0) {
- error_setg(&err, "no such host device");
- ret = -errno;
- goto error;
+ error_setg(errp, "no such host device");
+ error_prepend(errp, ERR_PREFIX, vdev->vbasedev.sysfsdev);
+ return;
}
vdev->vbasedev.name = g_strdup(basename(vdev->vbasedev.sysfsdev));
@@ -2545,9 +2545,8 @@ static int vfio_initfn(PCIDevice *pdev)
g_free(tmp);
if (len <= 0 || len >= sizeof(group_path)) {
- error_setg_errno(&err, len < 0 ? errno : ENAMETOOLONG,
+ error_setg_errno(errp, len < 0 ? errno : ENAMETOOLONG,
"no iommu_group found");
- ret = len < 0 ? -errno : -ENAMETOOLONG;
goto error;
}
@@ -2555,24 +2554,21 @@ static int vfio_initfn(PCIDevice *pdev)
group_name = basename(group_path);
if (sscanf(group_name, "%d", &groupid) != 1) {
- error_setg_errno(&err, errno, "failed to read %s", group_path);
- ret = -errno;
+ error_setg_errno(errp, errno, "failed to read %s", group_path);
goto error;
}
- trace_vfio_initfn(vdev->vbasedev.name, groupid);
+ trace_vfio_realize(vdev->vbasedev.name, groupid);
group = vfio_get_group(groupid, pci_device_iommu_address_space(pdev),
&err);
if (!group) {
- ret = -ENOENT;
goto error;
}
QLIST_FOREACH(vbasedev_iter, &group->device_list, next) {
if (strcmp(vbasedev_iter->name, vdev->vbasedev.name) == 0) {
- error_setg(&err, "device is already attached");
+ error_setg(errp, "device is already attached");
vfio_put_group(group);
- ret = -EBUSY;
goto error;
}
}
@@ -2594,7 +2590,7 @@ static int vfio_initfn(PCIDevice *pdev)
vdev->config_offset);
if (ret < (int)MIN(pci_config_size(&vdev->pdev), vdev->config_size)) {
ret = ret < 0 ? -errno : -EFAULT;
- error_setg_errno(&err, -ret, "failed to read device config space");
+ error_setg_errno(errp, -ret, "failed to read device config space");
goto error;
}
@@ -2611,8 +2607,7 @@ static int vfio_initfn(PCIDevice *pdev)
*/
if (vdev->vendor_id != PCI_ANY_ID) {
if (vdev->vendor_id >= 0xffff) {
- error_setg(&err, "invalid PCI vendor ID provided");
- ret = -EINVAL;
+ error_setg(errp, "invalid PCI vendor ID provided");
goto error;
}
vfio_add_emulated_word(vdev, PCI_VENDOR_ID, vdev->vendor_id, ~0);
@@ -2623,8 +2618,7 @@ static int vfio_initfn(PCIDevice *pdev)
if (vdev->device_id != PCI_ANY_ID) {
if (vdev->device_id > 0xffff) {
- error_setg(&err, "invalid PCI device ID provided");
- ret = -EINVAL;
+ error_setg(errp, "invalid PCI device ID provided");
goto error;
}
vfio_add_emulated_word(vdev, PCI_DEVICE_ID, vdev->device_id, ~0);
@@ -2635,8 +2629,7 @@ static int vfio_initfn(PCIDevice *pdev)
if (vdev->sub_vendor_id != PCI_ANY_ID) {
if (vdev->sub_vendor_id > 0xffff) {
- error_setg(&err, "invalid PCI subsystem vendor ID provided");
- ret = -EINVAL;
+ error_setg(errp, "invalid PCI subsystem vendor ID provided");
goto error;
}
vfio_add_emulated_word(vdev, PCI_SUBSYSTEM_VENDOR_ID,
@@ -2647,8 +2640,7 @@ static int vfio_initfn(PCIDevice *pdev)
if (vdev->sub_device_id != PCI_ANY_ID) {
if (vdev->sub_device_id > 0xffff) {
- error_setg(&err, "invalid PCI subsystem device ID provided");
- ret = -EINVAL;
+ error_setg(errp, "invalid PCI subsystem device ID provided");
goto error;
}
vfio_add_emulated_word(vdev, PCI_SUBSYSTEM_ID, vdev->sub_device_id,
~0);
@@ -2702,10 +2694,9 @@ static int vfio_initfn(PCIDevice *pdev)
struct vfio_region_info *opregion;
if (vdev->pdev.qdev.hotplugged) {
- error_setg(&err,
+ error_setg(errp,
"cannot support IGD OpRegion feature on hotplugged "
"device");
- ret = -EINVAL;
goto out_teardown;
}
@@ -2713,7 +2704,7 @@ static int vfio_initfn(PCIDevice *pdev)
VFIO_REGION_TYPE_PCI_VENDOR_TYPE | PCI_VENDOR_ID_INTEL,
VFIO_REGION_SUBTYPE_INTEL_IGD_OPREGION, &opregion);
if (ret) {
- error_setg_errno(&err, -ret,
+ error_setg_errno(errp, -ret,
"does not support requested IGD OpRegion
feature");
goto out_teardown;
}
@@ -2721,7 +2712,6 @@ static int vfio_initfn(PCIDevice *pdev)
vfio_pci_igd_opregion_init(vdev, opregion, &err);
g_free(opregion);
if (err) {
- ret = -EINVAL;
goto out_teardown;
}
}
@@ -2743,6 +2733,7 @@ static int vfio_initfn(PCIDevice *pdev)
pci_device_set_intx_routing_notifier(&vdev->pdev, vfio_intx_update);
ret = vfio_intx_enable(vdev, &err);
if (ret) {
+ error_setg_errno(errp, -ret, "failed to enable intx");
goto out_teardown;
}
}
@@ -2751,17 +2742,18 @@ static int vfio_initfn(PCIDevice *pdev)
vfio_register_req_notifier(vdev);
vfio_setup_resetfn_quirk(vdev);
- return 0;
+ return;
out_teardown:
pci_device_set_intx_routing_notifier(&vdev->pdev, NULL);
vfio_teardown_msi(vdev);
vfio_bars_exit(vdev);
error:
- if (err) {
- error_reportf_err(err, ERR_PREFIX, vdev->vbasedev.name);
+ error_propagate(errp, err);
+
+ if (*errp) {
+ error_prepend(errp, ERR_PREFIX, vdev->vbasedev.name);
}
- return ret;
}
static void vfio_instance_finalize(Object *obj)
@@ -2890,7 +2882,7 @@ static void vfio_pci_dev_class_init(ObjectClass *klass,
void *data)
dc->vmsd = &vfio_pci_vmstate;
dc->desc = "VFIO-based PCI device assignment";
set_bit(DEVICE_CATEGORY_MISC, dc->categories);
- pdc->init = vfio_initfn;
+ pdc->realize = vfio_realize;
pdc->exit = vfio_exitfn;
pdc->config_read = vfio_pci_read_config;
pdc->config_write = vfio_pci_write_config;
diff --git a/hw/vfio/trace-events b/hw/vfio/trace-events
index da13322..ef81609 100644
--- a/hw/vfio/trace-events
+++ b/hw/vfio/trace-events
@@ -36,7 +36,7 @@ vfio_pci_hot_reset_dep_devices(int domain, int bus, int slot,
int function, int
vfio_pci_hot_reset_result(const char *name, const char *result) "%s hot reset:
%s"
vfio_populate_device_config(const char *name, unsigned long size, unsigned
long offset, unsigned long flags) "Device %s config:\n size: 0x%lx, offset:
0x%lx, flags: 0x%lx"
vfio_populate_device_get_irq_info_failure(void) "VFIO_DEVICE_GET_IRQ_INFO
failure: %m"
-vfio_initfn(const char *name, int group_id) " (%s) group %d"
+vfio_realize(const char *name, int group_id) " (%s) group %d"
vfio_add_ext_cap_dropped(const char *name, uint16_t cap, uint16_t offset) "%s
%x@%x"
vfio_pci_reset(const char *name) " (%s)"
vfio_pci_reset_flr(const char *name) "%s FLR/VFIO_DEVICE_RESET"
--
1.9.1
