[Qemu-devel] [PATCH 3/3] ioh3420: Support ARI forwarding

[Knut Omang]

Enable the PCIe capability bit that indicates that this port is able to support
and forward requests to > 8 functions for ARI capable devices.

Signed-off-by: Knut Omang <knut.om...@oracle.com>
---
 hw/pci-bridge/ioh3420.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/hw/pci-bridge/ioh3420.c b/hw/pci-bridge/ioh3420.c
index 8f6c8b0..c14ea6b 100644
--- a/hw/pci-bridge/ioh3420.c
+++ b/hw/pci-bridge/ioh3420.c
@@ -92,8 +92,10 @@ static void ioh3420_reset(DeviceState *qdev)
 
 static int ioh3420_initfn(PCIDevice *d)
 {
+    PCIBridge* br = PCI_BRIDGE(d);
     PCIEPort *p = PCIE_PORT(d);
     PCIESlot *s = PCIE_SLOT(d);
+    uint8_t *exp_cap;
     int rc;
     char tmp[100];
     sprintf(tmp, "pcie_port.%d", s->slot);
@@ -121,6 +123,10 @@ static int ioh3420_initfn(PCIDevice *d)
     if (rc < 0) {
         goto err_msi;
     }
+    /* Support ARI forwarding */
+    exp_cap = d->config + d->exp.exp_cap;
+    pci_word_test_and_set_mask(exp_cap + PCI_EXP_DEVCAP2, PCI_EXP_DEVCAP2_ARI);
+
     pcie_cap_deverr_init(d);
     pcie_cap_slot_init(d, s->slot);
     pcie_chassis_create(s->chassis);
@@ -151,6 +157,7 @@ err_bridge:
 static void ioh3420_exitfn(PCIDevice *d)
 {
     PCIESlot *s = PCIE_SLOT(d);
+    PCIBridge* br = PCI_BRIDGE(d);
 
     pcie_aer_exit(d);
     pcie_chassis_del_slot(s);
-- 
1.9.0