OpenE2K/qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity

vfio/pci: Conversion to realize

Browse Source 
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.auger@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Eric Auger 2016-10-17 10:58:01 -06:00 committed by Alex Williamson
parent 9bdbfbd50d
commit 1a22aca1d0
2 changed files with 27 additions and 39 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

64
hw/vfio/pci.c
View File

@ -2513,13 +2513,12 @@ 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;
VFIOGroup *group;
char *tmp, group_path[PATH_MAX], *group_name;
Error *err = NULL;
ssize_t len;
struct stat st;
int groupid;
@ -2533,9 +2532,9 @@ static int vfio_initfn(PCIDevice *pdev)
}
if (stat(vdev->vbasedev.sysfsdev, &st) < 0) {
error_setg_errno(&err, errno, "no such host device");
ret = -errno;
goto error;
error_setg_errno(errp, errno, "no such host device");
error_prepend(errp, ERR_PREFIX, vdev->vbasedev.sysfsdev);
return;
}
vdev->vbasedev.name = g_strdup(basename(vdev->vbasedev.sysfsdev));
@ -2547,8 +2546,8 @@ static int vfio_initfn(PCIDevice *pdev)
g_free(tmp);
if (len <= 0 || len >= sizeof(group_path)) {
ret = len < 0 ? -errno : -ENAMETOOLONG;
error_setg_errno(&err, -ret, "no iommu_group found");
error_setg_errno(errp, len < 0 ? errno : ENAMETOOLONG,
"no iommu_group found");
goto error;
}
@ -2556,35 +2555,32 @@ 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);
group = vfio_get_group(groupid, pci_device_iommu_address_space(pdev), errp);
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;
}
}
ret = vfio_get_device(group, vdev->vbasedev.name, &vdev->vbasedev, &err);
ret = vfio_get_device(group, vdev->vbasedev.name, &vdev->vbasedev, errp);
if (ret) {
vfio_put_group(group);
goto error;
}
ret = vfio_populate_device(vdev, &err);
ret = vfio_populate_device(vdev, errp);
if (ret) {
goto error;
}
@ -2595,7 +2591,7 @@ 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;
}
@ -2612,8 +2608,7 @@ 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);
@ -2624,8 +2619,7 @@ 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);
@ -2636,8 +2630,7 @@ 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,
@ -2648,8 +2641,7 @@ 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);
@ -2678,14 +2670,14 @@ static int vfio_initfn(PCIDevice *pdev)
vfio_pci_size_rom(vdev);
ret = vfio_msix_early_setup(vdev, &err);
ret = vfio_msix_early_setup(vdev, errp);
if (ret) {
goto error;
}
vfio_bars_setup(vdev);
ret = vfio_add_capabilities(vdev, &err);
ret = vfio_add_capabilities(vdev, errp);
if (ret) {
goto out_teardown;
}
@ -2703,10 +2695,9 @@ 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;
}
@ -2714,12 +2705,12 @@ 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;
}
ret = vfio_pci_igd_opregion_init(vdev, opregion, &err);
ret = vfio_pci_igd_opregion_init(vdev, opregion, errp);
g_free(opregion);
if (ret) {
goto out_teardown;
@ -2741,7 +2732,7 @@ static int vfio_initfn(PCIDevice *pdev)
vdev->intx.mmap_timer = timer_new_ms(QEMU_CLOCK_VIRTUAL,
vfio_intx_mmap_enable, vdev);
pci_device_set_intx_routing_notifier(&vdev->pdev, vfio_intx_update);
ret = vfio_intx_enable(vdev, &err);
ret = vfio_intx_enable(vdev, errp);
if (ret) {
goto out_teardown;
}
@ -2751,17 +2742,14 @@ 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);
}
return ret;
error_prepend(errp, ERR_PREFIX, vdev->vbasedev.name);
}
static void vfio_instance_finalize(Object *obj)
@ -2890,7 +2878,7 @@ 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;

2
hw/vfio/trace-events
View File

@ -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"