On Wed, Jan 04, 2017 at 09:57:17PM +0200, Marcel Apfelbaum wrote:
> Make several Link Control Register flags writable to conform
> with the PCI Express spec.
>
> Signed-off-by: Marcel Apfelbaum <mar...@redhat.com>
Same comment as 2.
> ---
> hw/pci/pcie.c | 14 ++++++++++++++
> hw/virtio/virtio-pci.c | 3 +++
> include/hw/pci/pcie.h | 3 +++
> 3 files changed, 20 insertions(+)
>
> diff --git a/hw/pci/pcie.c b/hw/pci/pcie.c
> index 62c1def..a596400 100644
> --- a/hw/pci/pcie.c
> +++ b/hw/pci/pcie.c
> @@ -220,6 +220,20 @@ void pcie_cap_deverr_reset(PCIDevice *dev)
> PCI_EXP_DEVCTL_FERE | PCI_EXP_DEVCTL_URRE);
> }
>
> +void pcie_cap_lnkctl_init(PCIDevice *dev)
> +{
> + uint32_t pos = dev->exp.exp_cap;
> + pci_long_test_and_set_mask(dev->wmask + pos + PCI_EXP_LNKCTL,
> + PCI_EXP_LNKCTL_CCC | PCI_EXP_LNKCTL_ES);
> +}
> +
> +void pcie_cap_lnkctl_reset(PCIDevice *dev)
> +{
> + uint8_t *lnkctl = dev->config + dev->exp.exp_cap + PCI_EXP_LNKCTL;
> + pci_long_test_and_clear_mask(lnkctl,
> + PCI_EXP_LNKCTL_CCC | PCI_EXP_LNKCTL_ES);
> +}
> +
> static void hotplug_event_update_event_status(PCIDevice *dev)
> {
> uint32_t pos = dev->exp.exp_cap;
> diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
> index da2124f..66a5bf3 100644
> --- a/hw/virtio/virtio-pci.c
> +++ b/hw/virtio/virtio-pci.c
> @@ -1804,6 +1804,8 @@ static void virtio_pci_realize(PCIDevice *pci_dev,
> Error **errp)
> pci_set_word(pci_dev->config + pos + PCI_PM_PMC, 0x3);
> /* Init error enabling flags */
> pcie_cap_deverr_init(pci_dev);
> + /* Init Link Control Register */
> + pcie_cap_lnkctl_init(pci_dev);
> } else {
> /*
> * make future invocations of pci_is_express() return false
> @@ -1843,6 +1845,7 @@ static void virtio_pci_reset(DeviceState *qdev)
>
> if (pci_is_express(dev)) {
> pcie_cap_deverr_reset(dev);
> + pcie_cap_lnkctl_reset(dev);
> }
> }
>
> diff --git a/include/hw/pci/pcie.h b/include/hw/pci/pcie.h
> index 056d25e..7d6611a 100644
> --- a/include/hw/pci/pcie.h
> +++ b/include/hw/pci/pcie.h
> @@ -93,6 +93,9 @@ uint8_t pcie_cap_flags_get_vector(PCIDevice *dev);
> void pcie_cap_deverr_init(PCIDevice *dev);
> void pcie_cap_deverr_reset(PCIDevice *dev);
>
> +void pcie_cap_lnkctl_init(PCIDevice *dev);
> +void pcie_cap_lnkctl_reset(PCIDevice *dev);
> +
> void pcie_cap_slot_init(PCIDevice *dev, uint16_t slot);
> void pcie_cap_slot_reset(PCIDevice *dev);
> void pcie_cap_slot_write_config(PCIDevice *dev,
> --
> 2.5.5
