tpm/tpm_int.h

   1 /*
   2  * TPM configuration
   3  *
   4  * Copyright (C) 2011-2013 IBM Corporation
   5  *
   6  * Authors:
   7  *  Stefan Berger    <stefanb@us.ibm.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  10  * See the COPYING file in the top-level directory.
  11  */
  12 #ifndef TPM_TPM_INT_H
  13 #define TPM_TPM_INT_H
  14
  15 #include "exec/memory.h"
  16 #include "tpm/tpm_tis.h"
  17
  18 /* overall state of the TPM interface */
  19 struct TPMState {
  20     ISADevice busdev;
  21     MemoryRegion mmio;
  22
  23     union {
  24         TPMTISEmuState tis;
  25     } s;
  26
  27     uint8_t     locty_number;
  28     TPMLocality *locty_data;
  29
  30     char *backend;
  31     TPMBackend *be_driver;
  32 };
  33
  34 #define TPM(obj) OBJECT_CHECK(TPMState, (obj), TYPE_TPM_TIS)
  35
  36 struct TPMDriverOps {
  37     enum TpmType type;
  38     /* get a descriptive text of the backend to display to the user */
  39     const char *(*desc)(void);
  40
  41     TPMBackend *(*create)(QemuOpts *opts, const char *id);
  42     void (*destroy)(TPMBackend *t);
  43
  44     /* initialize the backend */
  45     int (*init)(TPMBackend *t, TPMState *s, TPMRecvDataCB *datacb);
  46     /* start up the TPM on the backend */
  47     int (*startup_tpm)(TPMBackend *t);
  48     /* returns true if nothing will ever answer TPM requests */
  49     bool (*had_startup_error)(TPMBackend *t);
  50
  51     size_t (*realloc_buffer)(TPMSizedBuffer *sb);
  52
  53     void (*deliver_request)(TPMBackend *t);
  54
  55     void (*reset)(TPMBackend *t);
  56
  57     void (*cancel_cmd)(TPMBackend *t);
  58
  59     bool (*get_tpm_established_flag)(TPMBackend *t);
  60 };
  61
  62 struct tpm_req_hdr {
  63     uint16_t tag;
  64     uint32_t len;
  65     uint32_t ordinal;
  66 } QEMU_PACKED;
  67
  68 struct tpm_resp_hdr {
  69     uint16_t tag;
  70     uint32_t len;
  71     uint32_t errcode;
  72 } QEMU_PACKED;
  73
  74 #define TPM_TAG_RQU_COMMAND       0xc1
  75 #define TPM_TAG_RQU_AUTH1_COMMAND 0xc2
  76 #define TPM_TAG_RQU_AUTH2_COMMAND 0xc3
  77
  78 #define TPM_TAG_RSP_COMMAND       0xc4
  79 #define TPM_TAG_RSP_AUTH1_COMMAND 0xc5
  80 #define TPM_TAG_RSP_AUTH2_COMMAND 0xc6
  81
  82 #define TPM_FAIL                  9
  83
  84 #define TPM_ORD_GetTicks          0xf1
  85
  86 TPMBackend *qemu_find_tpm(const char *id);
  87 int tpm_register_model(enum TpmModel model);
  88 int tpm_register_driver(const TPMDriverOps *tdo);
  89 void tpm_display_backend_drivers(void);
  90 const TPMDriverOps *tpm_get_backend_driver(const char *type);
  91 void tpm_write_fatal_error_response(uint8_t *out, uint32_t out_len);
  92
  93 extern const TPMDriverOps tpm_passthrough_driver;
  94
  95 #endif /* TPM_TPM_INT_H */