[Qemu-devel] [RFC PATCH v2 04/10] pcie: Introduce function for DSN capability creation

[Leonid Bloch]

From: Dmitry Fleytman <address@hidden>

Signed-off-by: Dmitry Fleytman <address@hidden>
Signed-off-by: Leonid Bloch <address@hidden>
---
 hw/pci/pcie.c              | 7 +++++++
 include/hw/pci/pci_regs.h  | 3 +++
 include/hw/pci/pcie.h      | 1 +
 include/hw/pci/pcie_regs.h | 4 ++++
 4 files changed, 15 insertions(+)

diff --git a/hw/pci/pcie.c b/hw/pci/pcie.c
index 7b8ff24..6d55f8f 100644
--- a/hw/pci/pcie.c
+++ b/hw/pci/pcie.c
@@ -678,3 +678,10 @@ 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_dsn_init(PCIDevice *dev, uint16_t offset, uint64_t val)
+{
+    pcie_add_capability(dev, PCI_EXT_CAP_ID_DSN, PCI_DSN_VER,
+                        offset, PCI_DSN_SIZEOF);
+    pci_set_quad(dev->config + offset + PCI_DSN_CAP, val);
+}
diff --git a/include/hw/pci/pci_regs.h b/include/hw/pci/pci_regs.h
index 2bd3ac9..4a0cc67 100644
--- a/include/hw/pci/pci_regs.h
+++ b/include/hw/pci/pci_regs.h
@@ -657,6 +657,9 @@
 #define  PCI_ARI_CTRL_ACS      0x0002  /* ACS Function Groups Enable */
 #define  PCI_ARI_CTRL_FG(x)    (((x) >> 4) & 7) /* Function Group */
 
+/* Device serial number */
+#define PCI_DSN_CAP     0x04    /* Device Serial Number Register */
+
 /* Address Translation Service */
 #define PCI_ATS_CAP            0x04    /* ATS Capability Register */
 #define  PCI_ATS_CAP_QDEP(x)   ((x) & 0x1f)    /* Invalidate Queue Depth */
diff --git a/include/hw/pci/pcie.h b/include/hw/pci/pcie.h
index cbbf0c5..83a325c 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_dsn_init(PCIDevice *dev, uint16_t offset, uint64_t val);
 
 extern const VMStateDescription vmstate_pcie_device;
 
diff --git a/include/hw/pci/pcie_regs.h b/include/hw/pci/pcie_regs.h
index e3c969e..d06acd1 100644
--- a/include/hw/pci/pcie_regs.h
+++ b/include/hw/pci/pcie_regs.h
@@ -80,6 +80,10 @@
 #define PCI_ARI_VER                     1
 #define PCI_ARI_SIZEOF                  8
 
+/* DSN */
+#define PCI_DSN_VER                     1
+#define PCI_DSN_SIZEOF                  8
+
 /* AER */
 #define PCI_ERR_VER                     2
 #define PCI_ERR_SIZEOF                  0x48
-- 
2.4.3