9fdc694635
More recent TIS specs extend the STS register to 32 bit. While we don't store the TIS interface state, yet, we can extend it without sideeffects. Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
70 lines
1.6 KiB
C
70 lines
1.6 KiB
C
/*
|
|
* tpm_tis.h - QEMU's TPM TIS interface emulator
|
|
*
|
|
* Copyright (C) 2006, 2010-2013 IBM Corporation
|
|
*
|
|
* Authors:
|
|
* Stefan Berger <stefanb@us.ibm.com>
|
|
* David Safford <safford@us.ibm.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2 or later.
|
|
* See the COPYING file in the top-level directory.
|
|
*
|
|
* Implementation of the TIS interface according to specs found at
|
|
* http://www.trustedcomputinggroup.org
|
|
*
|
|
*/
|
|
#ifndef TPM_TPM_TIS_H
|
|
#define TPM_TPM_TIS_H
|
|
|
|
#include "hw/isa/isa.h"
|
|
#include "hw/acpi/tpm.h"
|
|
#include "qemu-common.h"
|
|
|
|
#define TPM_TIS_NUM_LOCALITIES 5 /* per spec */
|
|
#define TPM_TIS_LOCALITY_SHIFT 12
|
|
#define TPM_TIS_NO_LOCALITY 0xff
|
|
|
|
#define TPM_TIS_IS_VALID_LOCTY(x) ((x) < TPM_TIS_NUM_LOCALITIES)
|
|
|
|
#define TPM_TIS_BUFFER_MAX 4096
|
|
|
|
typedef enum {
|
|
TPM_TIS_STATE_IDLE = 0,
|
|
TPM_TIS_STATE_READY,
|
|
TPM_TIS_STATE_COMPLETION,
|
|
TPM_TIS_STATE_EXECUTION,
|
|
TPM_TIS_STATE_RECEPTION,
|
|
} TPMTISState;
|
|
|
|
/* locality data -- all fields are persisted */
|
|
typedef struct TPMLocality {
|
|
TPMTISState state;
|
|
uint8_t access;
|
|
uint32_t sts;
|
|
uint32_t inte;
|
|
uint32_t ints;
|
|
|
|
uint16_t w_offset;
|
|
uint16_t r_offset;
|
|
TPMSizedBuffer w_buffer;
|
|
TPMSizedBuffer r_buffer;
|
|
} TPMLocality;
|
|
|
|
typedef struct TPMTISEmuState {
|
|
QEMUBH *bh;
|
|
uint32_t offset;
|
|
uint8_t buf[TPM_TIS_BUFFER_MAX];
|
|
|
|
uint8_t active_locty;
|
|
uint8_t aborting_locty;
|
|
uint8_t next_locty;
|
|
|
|
TPMLocality loc[TPM_TIS_NUM_LOCALITIES];
|
|
|
|
qemu_irq irq;
|
|
uint32_t irq_num;
|
|
} TPMTISEmuState;
|
|
|
|
#endif /* TPM_TPM_TIS_H */
|