[Qemu-devel] [PULL V4 09/31] pcie: Introduce function for DSN capability creation

[Jason Wang <jasowang@redhat.com>]

From: Dmitry Fleytman <dmitry.fleytman@ravellosystems.com>

Signed-off-by: Dmitry Fleytman <dmitry.fleytman@ravellosystems.com>
Signed-off-by: Leonid Bloch <leonid.bloch@ravellosystems.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
 hw/pci/pcie.c         | 10 ++++++++++
 include/hw/pci/pcie.h |  1 +
 2 files changed, 11 insertions(+)

diff --git a/hw/pci/pcie.c b/hw/pci/pcie.c
index 24cfc3b..9599fde 100644
--- a/hw/pci/pcie.c
+++ b/hw/pci/pcie.c
@@ -695,3 +695,13 @@ void pcie_ari_init(PCIDevice *dev, uint16_t offset, uint16_t nextfn)
                         offset, PCI_ARI_SIZEOF);
     pci_set_long(dev->config + offset + PCI_ARI_CAP, (nextfn & 0xff) << 8);
 }
+
+void pcie_dev_ser_num_init(PCIDevice *dev, uint16_t offset, uint64_t ser_num)
+{
+    static const int pci_dsn_ver = 1;
+    static const int pci_dsn_cap = 4;
+
+    pcie_add_capability(dev, PCI_EXT_CAP_ID_DSN, pci_dsn_ver, offset,
+                        PCI_EXT_CAP_DSN_SIZEOF);
+    pci_set_quad(dev->config + offset + pci_dsn_cap, ser_num);
+}
diff --git a/include/hw/pci/pcie.h b/include/hw/pci/pcie.h
index cbbf0c5..056d25e 100644
--- a/include/hw/pci/pcie.h
+++ b/include/hw/pci/pcie.h
@@ -119,6 +119,7 @@ void pcie_add_capability(PCIDevice *dev,
                          uint16_t offset, uint16_t size);
 
 void pcie_ari_init(PCIDevice *dev, uint16_t offset, uint16_t nextfn);
+void pcie_dev_ser_num_init(PCIDevice *dev, uint16_t offset, uint64_t ser_num);
 
 extern const VMStateDescription vmstate_pcie_device;
 
-- 
2.7.4