2  *  passthrough TPM driver
33 #include "qapi/qapi-visit-tpm.h"
37 #define TYPE_TPM_PASSTHROUGH "tpm-passthrough"
95                              "transmitting data to TPM");  in tpm_passthrough_unix_tx_bufs()
106                              "reading data from TPM");  in tpm_passthrough_unix_tx_bufs()
112                      "response packet from TPM");  in tpm_passthrough_unix_tx_bufs()
154     /* only a TPM 2.0 will support this */  in tpm_passthrough_reset_tpm_established_flag()
165      * commands on all TPM manufacturers' TPMs.  in tpm_passthrough_cancel_cmd()
174                 error_report("Canceling TPM command failed: %s",  in tpm_passthrough_cancel_cmd()
178             error_report("Cannot cancel TPM command due to missing "  in tpm_passthrough_cancel_cmd()
179                          "TPM sysfs cancel entry");  in tpm_passthrough_cancel_cmd()
207  * in Documentation/ABI/stable/sysfs-class-tpm.
208  * From /dev/tpm0 create /sys/class/tpm/tpm0/device/cancel
220             error_report("tpm_passthrough: Could not open TPM cancel path: %s",  in tpm_passthrough_open_sysfs_cancel()
228         error_report("tpm_passthrough: Bad TPM device path %s",  in tpm_passthrough_open_sysfs_cancel()
234     if (snprintf(path, sizeof(path), "/sys/class/tpm/%s/device/cancel",  in tpm_passthrough_open_sysfs_cancel()
246         error_report("tpm_passthrough: Could not guess TPM cancel path");  in tpm_passthrough_open_sysfs_cancel()
272         error_report("Cannot access TPM device using '%s': %s",  in tpm_passthrough_handle_device_opts()
278         error_report("'%s' is not a TPM device.",  in tpm_passthrough_handle_device_opts()
308         error_report("Requested buffer size of %zu is smaller than host TPM's "  in tpm_passthrough_startup_tpm()
333         .help = "Sysfs file entry for canceling TPM commands",
338         .help = "Path to TPM device on the host",
373     tbc->desc = "Passthrough TPM backend driver";  in tpm_passthrough_class_init()