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The proposed ABI failed to account for multiple host bridges with the same
stream name. The fix needs to namespace streams or otherwise link back to
the host bridge, but a change like that is too big for a fix. Given this
ABI never saw a released kernel, delete it for now and bring it back later
with this issue addressed.
Reported-by: Xu Yilun <yilun.xu@linux.intel.com>
Reported-by: Yi Lai <yi1.lai@intel.com>
Closes: http://lore.kernel.org/20251223085601.2607455-1-yilun.xu@linux.intel.com
Link: http://patch.msgid.link/6972c872acbb9_1d3310035@dwillia2-mobl4.notmuch
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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Given that the platform TSM owns IDE Stream ID allocation, report the
active streams via the TSM class device. Establish a symlink from the
class device to the PCI endpoint device consuming the stream, named by
the Stream ID.
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Alexey Kardashevskiy <aik@amd.com>
Link: https://patch.msgid.link/20251031212902.2256310-10-dan.j.williams@intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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A "TSM" is a platform component that provides an API for securely
provisioning resources for a confidential guest (TVM) to consume. The
name originates from the PCI specification for platform agent that
carries out operations for PCIe TDISP (TEE Device Interface Security
Protocol).
Instances of this core device are parented by a device representing the
platform security function like CONFIG_CRYPTO_DEV_CCP or
CONFIG_INTEL_TDX_HOST.
This device interface is a frontend to the aspects of a TSM and TEE I/O
that are cross-architecture common. This includes mechanisms like
enumerating available platform TEE I/O capabilities and provisioning
connections between the platform TSM and device DSMs (Device Security
Manager (TDISP)).
For now this is just the scaffolding for registering a TSM device sysfs
interface.
Cc: Xu Yilun <yilun.xu@linux.intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Co-developed-by: Aneesh Kumar K.V (Arm) <aneesh.kumar@kernel.org>
Signed-off-by: Aneesh Kumar K.V (Arm) <aneesh.kumar@kernel.org>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Alexey Kardashevskiy <aik@amd.com>
Link: https://patch.msgid.link/20251031212902.2256310-2-dan.j.williams@intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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