[v4,33/42] CXL/cxl_component: Add cxl_get_hb_cstate()

Commit Message

Jonathan Cameron Jan. 24, 2022, 5:16 p.m. UTC

From: Jonathan Cameron <[e-mail]>

Accessor to get hold of the cxl state for a CXL host bridge
without exposing the internals of the implementation.

Signed-off-by: Jonathan Cameron <[e-mail]>
---
 hw/pci-bridge/pci_expander_bridge.c | 7 +++++++
 include/hw/cxl/cxl_component.h      | 2 ++
 2 files changed, 9 insertions(+)

Patch

diff --git a/hw/pci-bridge/pci_expander_bridge.c b/hw/pci-bridge/pci_expander_bridge.c
index 206e5412d3..e87651d13e 100644
--- a/hw/pci-bridge/pci_expander_bridge.c
+++ b/hw/pci-bridge/pci_expander_bridge.c
@@ -81,6 +81,13 @@  static GList *pxb_dev_list;
 #define TYPE_PXB_CXL_HOST "pxb-cxl-host"
 #define PXB_CXL_HOST(obj) OBJECT_CHECK(CXLHost, (obj), TYPE_PXB_CXL_HOST)
 
+CXLComponentState *cxl_get_hb_cstate(PCIHostState *hb)
+{
+    CXLHost *host = PXB_CXL_HOST(hb);
+
+    return &host->cxl_cstate;
+}
+
 static int pxb_bus_num(PCIBus *bus)
 {
     PXBDev *pxb = convert_to_pxb(bus->parent_dev);
diff --git a/include/hw/cxl/cxl_component.h b/include/hw/cxl/cxl_component.h
index d30c3f4716..8ca141afd4 100644
--- a/include/hw/cxl/cxl_component.h
+++ b/include/hw/cxl/cxl_component.h
@@ -201,4 +201,6 @@  static inline hwaddr cxl_decode_ig(int ig)
     return 1 << (ig + 8);
 }
 
+CXLComponentState *cxl_get_hb_cstate(PCIHostState *hb);
+
 #endif