On 27/8/25 13:51, Dan Williams wrote:
[skipped]
diff --git a/include/linux/pci-tsm.h b/include/linux/pci-tsm.h
new file mode 100644
index 000000000000..e4f9ea4a54a9
--- /dev/null
+++ b/include/linux/pci-tsm.h
@@ -0,0 +1,143 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __PCI_TSM_H
+#define __PCI_TSM_H
+#include <linux/mutex.h>
+#include <linux/pci.h>
+
+struct pci_tsm;
+
+/*
+ * struct pci_tsm_ops - manage confidential links and security state
+ * @link_ops: Coordinate PCIe SPDM and IDE establishment via a platform TSM.
+ * Provide a secure session transport for TDISP state management
+ * (typically bare metal physical function operations).
+ * @sec_ops: Lock, unlock, and interrogate the security state of the
+ * function via the platform TSM (typically virtual function
+ * operations).
+ * @owner: Back reference to the TSM device that owns this instance.
+ *
+ * This operations are mutually exclusive either a tsm_dev instance
+ * manages physical link properties or it manages function security
+ * states like TDISP lock/unlock.
+ */
+struct pci_tsm_ops {
+ /*
+ * struct pci_tsm_link_ops - Manage physical link and the TSM/DSM session
+ * @probe: allocate context (wrap 'struct pci_tsm') for follow-on link
+ * operations
+ * @remove: destroy link operations context
+ * @connect: establish / validate a secure connection (e.g. IDE)
+ * with the device
+ * @disconnect: teardown the secure link
+ *
+ * Context: @probe, @remove, @connect, and @disconnect run under
+ * pci_tsm_rwsem held for write to sync with TSM unregistration and
+ * mutual exclusion of @connect and @disconnect. @connect and
+ * @disconnect additionally run under the DSM lock (struct
+ * pci_tsm_pf0::lock) as well as @probe and @remove of the subfunctions.
+ */
+ struct_group_tagged(pci_tsm_link_ops, link_ops,
+ struct pci_tsm *(*probe)(struct pci_dev *pdev);
struct pci_tsm *(*probe)(struct pci_dev *pdev, struct tsm_dev *tsm)
as otherwise there is no way to get from pci_dev to tsm_dev (which is sev_device - that thing with request/response buffers for guest requests, etc).
Or add a simple void* to tsm_register() and pci_tsm_ops::probe(). Or I can add (which way?) and maintain in my tree. Thanks,
--
Alexey
