[v6] CXl 2.0 emulation Support

[PATCH v6 31/43] CXL/cxl_component: Add cxl_get_hb_cstate()

Jonathan Cameron via posted 43 patches 3 years, 12 months ago

Diff against v4 v5 v7 v8 v9 v10
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Maintainers: "Michael S. Tsirkin" <mst@redhat.com>, Igor Mammedov <imammedo@redhat.com>, Ani Sinha <ani@anisinha.ca>, Peter Maydell <peter.maydell@linaro.org>, Shannon Zhao <shannon.zhaosl@gmail.com>, Eduardo Habkost <eduardo@habkost.net>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, "Philippe Mathieu-Daudé" <f4bug@amsat.org>, Yanan Wang <wangyanan55@huawei.com>, Ben Widawsky <ben.widawsky@intel.com>, Jonathan Cameron <jonathan.cameron@huawei.com>, Paolo Bonzini <pbonzini@redhat.com>, Richard Henderson <richard.henderson@linaro.org>, Eric Blake <eblake@redhat.com>, Markus Armbruster <armbru@redhat.com>, Peter Xu <peterx@redhat.com>, David Hildenbrand <david@redhat.com>, Thomas Huth <thuth@redhat.com>, Laurent Vivier <lvivier@redhat.com>

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[PATCH v6 31/43] CXL/cxl_component: Add cxl_get_hb_cstate()

Posted by Jonathan Cameron via 3 years, 12 months ago

From: Jonathan Cameron <jonathan.cameron@huawei.com>

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 <jonathan.cameron@huawei.com>
---
 hw/pci-bridge/pci_expander_bridge.c | 7 +++++++
 include/hw/cxl/cxl_component.h      | 2 ++
 2 files changed, 9 insertions(+)

diff --git a/hw/pci-bridge/pci_expander_bridge.c b/hw/pci-bridge/pci_expander_bridge.c
index e11a967916..de534c44ab 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 42cd140f75..29d7268275 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
-- 
2.32.0

Re: [PATCH v6 31/43] CXL/cxl_component: Add cxl_get_hb_cstate()

Posted by Alex Bennée 3 years, 11 months ago

Jonathan Cameron <Jonathan.Cameron@huawei.com> writes:

> From: Jonathan Cameron <jonathan.cameron@huawei.com>
>
> 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 <jonathan.cameron@huawei.com>

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>

-- 
Alex Bennée