diff options
Diffstat (limited to 'drivers/pci/iov.c')
| -rw-r--r-- | drivers/pci/iov.c | 64 |
1 files changed, 45 insertions, 19 deletions
diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c index aaa33e8dc4c9..10693b5d7eb6 100644 --- a/drivers/pci/iov.c +++ b/drivers/pci/iov.c @@ -285,23 +285,16 @@ const struct attribute_group sriov_vf_dev_attr_group = { .is_visible = sriov_vf_attrs_are_visible, }; -int pci_iov_add_virtfn(struct pci_dev *dev, int id) +static struct pci_dev *pci_iov_scan_device(struct pci_dev *dev, int id, + struct pci_bus *bus) { - int i; - int rc = -ENOMEM; - u64 size; - struct pci_dev *virtfn; - struct resource *res; struct pci_sriov *iov = dev->sriov; - struct pci_bus *bus; - - bus = virtfn_add_bus(dev->bus, pci_iov_virtfn_bus(dev, id)); - if (!bus) - goto failed; + struct pci_dev *virtfn; + int rc; virtfn = pci_alloc_dev(bus); if (!virtfn) - goto failed0; + return ERR_PTR(-ENOMEM); virtfn->devfn = pci_iov_virtfn_devfn(dev, id); virtfn->vendor = dev->vendor; @@ -314,8 +307,35 @@ int pci_iov_add_virtfn(struct pci_dev *dev, int id) pci_read_vf_config_common(virtfn); rc = pci_setup_device(virtfn); - if (rc) - goto failed1; + if (rc) { + pci_dev_put(dev); + pci_bus_put(virtfn->bus); + kfree(virtfn); + return ERR_PTR(rc); + } + + return virtfn; +} + +int pci_iov_add_virtfn(struct pci_dev *dev, int id) +{ + struct pci_bus *bus; + struct pci_dev *virtfn; + struct resource *res; + int rc, i; + u64 size; + + bus = virtfn_add_bus(dev->bus, pci_iov_virtfn_bus(dev, id)); + if (!bus) { + rc = -ENOMEM; + goto failed; + } + + virtfn = pci_iov_scan_device(dev, id, bus); + if (IS_ERR(virtfn)) { + rc = PTR_ERR(virtfn); + goto failed0; + } virtfn->dev.parent = dev->dev.parent; virtfn->multifunction = 0; @@ -327,8 +347,8 @@ int pci_iov_add_virtfn(struct pci_dev *dev, int id) virtfn->resource[i].name = pci_name(virtfn); virtfn->resource[i].flags = res->flags; size = pci_iov_resource_size(dev, i + PCI_IOV_RESOURCES); - virtfn->resource[i].start = res->start + size * id; - virtfn->resource[i].end = virtfn->resource[i].start + size - 1; + resource_set_range(&virtfn->resource[i], + res->start + size * id, size); rc = request_resource(res, &virtfn->resource[i]); BUG_ON(rc); } @@ -747,6 +767,7 @@ static int sriov_init(struct pci_dev *dev, int pos) struct resource *res; const char *res_name; struct pci_dev *pdev; + u32 sriovbars[PCI_SRIOV_NUM_BARS]; pci_read_config_word(dev, pos + PCI_SRIOV_CTRL, &ctrl); if (ctrl & PCI_SRIOV_CTRL_VFE) { @@ -783,6 +804,10 @@ found: if (!iov) return -ENOMEM; + /* Sizing SR-IOV BARs with VF Enable cleared - no decode */ + __pci_size_stdbars(dev, PCI_SRIOV_NUM_BARS, + pos + PCI_SRIOV_BAR, sriovbars); + nres = 0; for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) { res = &dev->resource[i + PCI_IOV_RESOURCES]; @@ -796,7 +821,8 @@ found: bar64 = (res->flags & IORESOURCE_MEM_64) ? 1 : 0; else bar64 = __pci_read_base(dev, pci_bar_unknown, res, - pos + PCI_SRIOV_BAR + i * 4); + pos + PCI_SRIOV_BAR + i * 4, + &sriovbars[i]); if (!res->flags) continue; if (resource_size(res) & (PAGE_SIZE - 1)) { @@ -804,7 +830,7 @@ found: goto failed; } iov->barsz[i] = resource_size(res); - res->end = res->start + resource_size(res) * total - 1; + resource_set_size(res, resource_size(res) * total); pci_info(dev, "%s %pR: contains BAR %d for %d VFs\n", res_name, res, i, total); i += bar64; @@ -946,7 +972,7 @@ void pci_iov_remove(struct pci_dev *dev) void pci_iov_update_resource(struct pci_dev *dev, int resno) { struct pci_sriov *iov = dev->is_physfn ? dev->sriov : NULL; - struct resource *res = dev->resource + resno; + struct resource *res = pci_resource_n(dev, resno); int vf_bar = resno - PCI_IOV_RESOURCES; struct pci_bus_region region; u16 cmd; |