[PATCH kernel 2/9] pci/tsm: Add tsm_tdi_status

[Alexey Kardashevskiy]

Define a structure with all info about a TDI such as TDISP status,
bind state, used START_INTERFACE options and the report digest.

This will be extended and shared to the userspace.

Signed-off-by: Alexey Kardashevskiy <aik@xxxxxxx>
---

Make it uapi? We might want a sysfs node per a field so probably not.
For now its only user is AMD SEV TIO with a plan to expose this struct
as a whole via sysfs.
---
 include/linux/pci-tsm.h | 26 ++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/include/linux/pci-tsm.h b/include/linux/pci-tsm.h
index 7987ede76914..8086f358c51b 100644
--- a/include/linux/pci-tsm.h
+++ b/include/linux/pci-tsm.h
@@ -355,4 +355,30 @@ struct tdi_report_footer {
 #define TDI_REPORT_FTR(rep)		((struct tdi_report_footer *) &TDI_REPORT_MR((rep), \
 					TDI_REPORT_MR_NUM(rep)))
 
+enum tsm_tdisp_state {
+	TDISP_STATE_CONFIG_UNLOCKED = 0,
+	TDISP_STATE_CONFIG_LOCKED = 1,
+	TDISP_STATE_RUN = 2,
+	TDISP_STATE_ERROR = 3,
+};
+
+enum tsm_tdisp_status {
+	TDISP_STATE_BOUND = 0,
+	TDISP_STATE_INVALID = 1,
+	TDISP_STATE_UNBOUND = 2,
+};
+
+struct tsm_tdi_status {
+	__u8 status; /* enum tsm_tdisp_status */
+	__u8 state; /* enum tsm_tdisp_state */
+	__u8 all_request_redirect;
+	__u8 bind_p2p;
+	__u8 lock_msix;
+	__u8 no_fw_update;
+	__u16 cache_line_size;
+	__u8 interface_report_digest[48];
+	__u64 intf_report_counter;
+	struct tdisp_interface_id id;
+} __packed;
+
 #endif /*__PCI_TSM_H */
-- 
2.52.0