Commit 008d0e2d authored by Eric Auger's avatar Eric Auger Committed by Alex Williamson
Browse files

vfio/pci: Pass an error object to vfio_msix_early_setup



Pass an error object to prepare for migration to VFIO-PCI realize.
The returned value will be removed later on.

We now format an error in case of reading failure for
- the MSIX flags
- the MSIX table,
- the MSIX PBA.

Signed-off-by: default avatarEric Auger <eric.auger@redhat.com>
Reviewed-by: default avatarMarkus Armbruster <armbru@redhat.com>
Signed-off-by: default avatarAlex Williamson <alex.williamson@redhat.com>
parent 2312d907
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+8 −5
Original line number Diff line number Diff line
@@ -1277,7 +1277,7 @@ static void vfio_pci_fixup_msix_region(VFIOPCIDevice *vdev)
 * need to first look for where the MSI-X table lives.  So we
 * unfortunately split MSI-X setup across two functions.
 */
static int vfio_msix_early_setup(VFIOPCIDevice *vdev)
static int vfio_msix_early_setup(VFIOPCIDevice *vdev, Error **errp)
{
    uint8_t pos;
    uint16_t ctrl;
@@ -1292,16 +1292,19 @@ static int vfio_msix_early_setup(VFIOPCIDevice *vdev)

    if (pread(fd, &ctrl, sizeof(ctrl),
              vdev->config_offset + pos + PCI_MSIX_FLAGS) != sizeof(ctrl)) {
        error_setg_errno(errp, errno, "failed to read PCI MSIX FLAGS");
        return -errno;
    }

    if (pread(fd, &table, sizeof(table),
              vdev->config_offset + pos + PCI_MSIX_TABLE) != sizeof(table)) {
        error_setg_errno(errp, errno, "failed to read PCI MSIX TABLE");
        return -errno;
    }

    if (pread(fd, &pba, sizeof(pba),
              vdev->config_offset + pos + PCI_MSIX_PBA) != sizeof(pba)) {
        error_setg_errno(errp, errno, "failed to read PCI MSIX PBA");
        return -errno;
    }

@@ -1332,7 +1335,7 @@ static int vfio_msix_early_setup(VFIOPCIDevice *vdev)
            (vdev->device_id & 0xff00) == 0x5800) {
            msix->pba_offset = 0x1000;
        } else {
            error_report("vfio: Hardware reports invalid configuration, "
            error_setg(errp, "hardware reports invalid configuration, "
                       "MSIX PBA outside of specified BAR");
            g_free(msix);
            return -EINVAL;
@@ -2657,9 +2660,9 @@ static int vfio_initfn(PCIDevice *pdev)

    vfio_pci_size_rom(vdev);

    ret = vfio_msix_early_setup(vdev);
    ret = vfio_msix_early_setup(vdev, &err);
    if (ret) {
        return ret;
        goto error;
    }

    vfio_bars_setup(vdev);