@@ -52,9 +52,11 @@ setting up a BAR for a VF.
...
/* Add and initialize the SR/IOV capability */
- pcie_sriov_pf_init(d, 0x200, "your_virtual_dev",
- vf_devid, initial_vfs, total_vfs,
- fun_offset, stride);
+ if (!pcie_sriov_pf_init(d, 0x200, "your_virtual_dev",
+ vf_devid, initial_vfs, total_vfs,
+ fun_offset, stride, errp)) {
+ return;
+ }
/* Set up individual VF BARs (parameters as for normal BARs) */
pcie_sriov_pf_init_vf_bar( ... )
@@ -27,10 +27,11 @@ struct PCIESriovVF {
uint16_t vf_number; /* Logical VF number of this function */
};
-void pcie_sriov_pf_init(PCIDevice *dev, uint16_t offset,
+bool pcie_sriov_pf_init(PCIDevice *dev, uint16_t offset,
const char *vfname, uint16_t vf_dev_id,
uint16_t init_vfs, uint16_t total_vfs,
- uint16_t vf_offset, uint16_t vf_stride);
+ uint16_t vf_offset, uint16_t vf_stride,
+ Error **errp);
void pcie_sriov_pf_exit(PCIDevice *dev);
/* Set up a VF bar in the SR/IOV bar area */
@@ -447,9 +447,16 @@ static void igb_pci_realize(PCIDevice *pci_dev, Error **errp)
pcie_ari_init(pci_dev, 0x150);
- pcie_sriov_pf_init(pci_dev, IGB_CAP_SRIOV_OFFSET, TYPE_IGBVF,
- IGB_82576_VF_DEV_ID, IGB_MAX_VF_FUNCTIONS, IGB_MAX_VF_FUNCTIONS,
- IGB_VF_OFFSET, IGB_VF_STRIDE);
+ if (!pcie_sriov_pf_init(pci_dev, IGB_CAP_SRIOV_OFFSET,
+ TYPE_IGBVF, IGB_82576_VF_DEV_ID,
+ IGB_MAX_VF_FUNCTIONS, IGB_MAX_VF_FUNCTIONS,
+ IGB_VF_OFFSET, IGB_VF_STRIDE,
+ errp)) {
+ pcie_cap_exit(pci_dev);
+ igb_cleanup_msix(s);
+ msi_uninit(pci_dev);
+ return;
+ }
pcie_sriov_pf_init_vf_bar(pci_dev, IGBVF_MMIO_BAR_IDX,
PCI_BASE_ADDRESS_MEM_TYPE_64 | PCI_BASE_ADDRESS_MEM_PREFETCH,
@@ -8048,7 +8048,8 @@ out:
return pow2ceil(bar_size);
}
-static void nvme_init_sriov(NvmeCtrl *n, PCIDevice *pci_dev, uint16_t offset)
+static bool nvme_init_sriov(NvmeCtrl *n, PCIDevice *pci_dev, uint16_t offset,
+ Error **errp)
{
uint16_t vf_dev_id = n->params.use_intel_id ?
PCI_DEVICE_ID_INTEL_NVME : PCI_DEVICE_ID_REDHAT_NVME;
@@ -8057,12 +8058,17 @@ static void nvme_init_sriov(NvmeCtrl *n, PCIDevice *pci_dev, uint16_t offset)
le16_to_cpu(cap->vifrsm),
NULL, NULL);
- pcie_sriov_pf_init(pci_dev, offset, "nvme", vf_dev_id,
- n->params.sriov_max_vfs, n->params.sriov_max_vfs,
- NVME_VF_OFFSET, NVME_VF_STRIDE);
+ if (!pcie_sriov_pf_init(pci_dev, offset, "nvme", vf_dev_id,
+ n->params.sriov_max_vfs, n->params.sriov_max_vfs,
+ NVME_VF_OFFSET, NVME_VF_STRIDE,
+ errp)) {
+ return false;
+ }
pcie_sriov_pf_init_vf_bar(pci_dev, 0, PCI_BASE_ADDRESS_SPACE_MEMORY |
PCI_BASE_ADDRESS_MEM_TYPE_64, bar_size);
+
+ return true;
}
static int nvme_add_pm_capability(PCIDevice *pci_dev, uint8_t offset)
@@ -8155,6 +8161,12 @@ static bool nvme_init_pci(NvmeCtrl *n, PCIDevice *pci_dev, Error **errp)
return false;
}
+ if (!pci_is_vf(pci_dev) && n->params.sriov_max_vfs &&
+ !nvme_init_sriov(n, pci_dev, 0x120, errp)) {
+ msix_uninit(pci_dev, &n->bar0, &n->bar0);
+ return false;
+ }
+
nvme_update_msixcap_ts(pci_dev, n->conf_msix_qsize);
if (n->params.cmb_size_mb) {
@@ -8165,10 +8177,6 @@ static bool nvme_init_pci(NvmeCtrl *n, PCIDevice *pci_dev, Error **errp)
nvme_init_pmr(n, pci_dev);
}
- if (!pci_is_vf(pci_dev) && n->params.sriov_max_vfs) {
- nvme_init_sriov(n, pci_dev, 0x120);
- }
-
return true;
}
@@ -24,14 +24,27 @@ static PCIDevice *register_vf(PCIDevice *pf, int devfn,
const char *name, uint16_t vf_num);
static void unregister_vfs(PCIDevice *dev);
-void pcie_sriov_pf_init(PCIDevice *dev, uint16_t offset,
+bool pcie_sriov_pf_init(PCIDevice *dev, uint16_t offset,
const char *vfname, uint16_t vf_dev_id,
uint16_t init_vfs, uint16_t total_vfs,
- uint16_t vf_offset, uint16_t vf_stride)
+ uint16_t vf_offset, uint16_t vf_stride,
+ Error **errp)
{
uint8_t *cfg = dev->config + offset;
uint8_t *wmask;
+ if (total_vfs) {
+ uint16_t ari_cap = pcie_find_capability(dev, PCI_EXT_CAP_ID_ARI);
+ uint16_t first_vf_devfn = dev->devfn + vf_offset;
+ uint16_t last_vf_devfn = first_vf_devfn + vf_stride * (total_vfs - 1);
+
+ if ((!ari_cap && PCI_SLOT(dev->devfn) != PCI_SLOT(last_vf_devfn)) ||
+ last_vf_devfn >= PCI_DEVFN_MAX) {
+ error_setg(errp, "VF function number overflows");
+ return false;
+ }
+ }
+
pcie_add_capability(dev, PCI_EXT_CAP_ID_SRIOV, 1,
offset, PCI_EXT_CAP_SRIOV_SIZEOF);
dev->exp.sriov_cap = offset;
@@ -69,6 +82,8 @@ void pcie_sriov_pf_init(PCIDevice *dev, uint16_t offset,
pci_set_word(wmask + PCI_SRIOV_SYS_PGSIZE, 0x553);
qdev_prop_set_bit(&dev->qdev, "multifunction", true);
+
+ return true;
}
void pcie_sriov_pf_exit(PCIDevice *dev)
pci_new() aborts when creating a VF with a function number equals to or is greater than PCI_DEVFN_MAX. Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> --- docs/pcie_sriov.txt | 8 +++++--- include/hw/pci/pcie_sriov.h | 5 +++-- hw/net/igb.c | 13 ++++++++++--- hw/nvme/ctrl.c | 24 ++++++++++++++++-------- hw/pci/pcie_sriov.c | 19 +++++++++++++++++-- 5 files changed, 51 insertions(+), 18 deletions(-)