[PATCH] xio3130_upstream: Add ACS (Access Control Services) capability

[Paul Schlacter]

If it is a pcie device, check that all devices on the path from

the device to the root complex have ACS enabled, and then the

device will become an iommu_group.

it will have the effect of isolation

Signed-off-by: wlfightup <wlfightup@gmail.com>

---

 hw/pci-bridge/xio3130_upstream.c | 3 +++

 1 file changed, 3 insertions(+)

diff --git a/hw/pci-bridge/xio3130_upstream.c b/hw/pci-bridge/xio3130_upstream.c

index 5ff46ef050..2df952222b 100644

--- a/hw/pci-bridge/xio3130_upstream.c

+++ b/hw/pci-bridge/xio3130_upstream.c

@@ -37,6 +37,8 @@

 #define XIO3130_SSVID_SSID              0

 #define XIO3130_EXP_OFFSET              0x90

 #define XIO3130_AER_OFFSET              0x100

+#define XIO3130_ACS_OFFSET \

+        (XIO3130_AER_OFFSET + PCI_ERR_SIZEOF)

 static void xio3130_upstream_write_config(PCIDevice *d, uint32_t address,

                                           uint32_t val, int len)

@@ -92,6 +94,7 @@ static void xio3130_upstream_realize(PCIDevice *d, Error **errp)

         goto err;

     }

+    pcie_acs_init(d, XIO3130_ACS_OFFSET);

     return;

 err:

--

2.24.3 (Apple Git-128)