diff options
Diffstat (limited to 'drivers/char/tpm/tpm_ibmvtpm.h')
| -rw-r--r-- | drivers/char/tpm/tpm_ibmvtpm.h | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/drivers/char/tpm/tpm_ibmvtpm.h b/drivers/char/tpm/tpm_ibmvtpm.h new file mode 100644 index 0000000000..51198b1374 --- /dev/null +++ b/drivers/char/tpm/tpm_ibmvtpm.h @@ -0,0 +1,73 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2012 IBM Corporation + * + * Author: Ashley Lai <ashleydlai@gmail.com> + * + * Maintained by: <tpmdd-devel@lists.sourceforge.net> + * + * Device driver for TCG/TCPA TPM (trusted platform module). + * Specifications at www.trustedcomputinggroup.org + */ + +#ifndef __TPM_IBMVTPM_H__ +#define __TPM_IBMVTPM_H__ + +/* vTPM Message Format 1 */ +struct ibmvtpm_crq { + u8 valid; + u8 msg; + __be16 len; + __be32 data; + __be64 reserved; +} __attribute__((packed, aligned(8))); + +struct ibmvtpm_crq_queue { + struct ibmvtpm_crq *crq_addr; + u32 index; + u32 num_entry; + wait_queue_head_t wq; +}; + +struct ibmvtpm_dev { + struct device *dev; + struct vio_dev *vdev; + struct ibmvtpm_crq_queue crq_queue; + dma_addr_t crq_dma_handle; + u32 rtce_size; + void __iomem *rtce_buf; + dma_addr_t rtce_dma_handle; + spinlock_t rtce_lock; + wait_queue_head_t wq; + u16 res_len; + u32 vtpm_version; + u8 tpm_processing_cmd; +}; + +#define CRQ_RES_BUF_SIZE PAGE_SIZE + +/* Initialize CRQ */ +#define INIT_CRQ_CMD 0xC001000000000000LL /* Init cmd */ +#define INIT_CRQ_COMP_CMD 0xC002000000000000LL /* Init complete cmd */ +#define INIT_CRQ_RES 0x01 /* Init respond */ +#define INIT_CRQ_COMP_RES 0x02 /* Init complete respond */ +#define VALID_INIT_CRQ 0xC0 /* Valid command for init crq */ + +/* vTPM CRQ response is the message type | 0x80 */ +#define VTPM_MSG_RES 0x80 +#define IBMVTPM_VALID_CMD 0x80 + +/* vTPM CRQ message types */ +#define VTPM_GET_VERSION 0x01 +#define VTPM_GET_VERSION_RES (0x01 | VTPM_MSG_RES) + +#define VTPM_TPM_COMMAND 0x02 +#define VTPM_TPM_COMMAND_RES (0x02 | VTPM_MSG_RES) + +#define VTPM_GET_RTCE_BUFFER_SIZE 0x03 +#define VTPM_GET_RTCE_BUFFER_SIZE_RES (0x03 | VTPM_MSG_RES) + +#define VTPM_PREPARE_TO_SUSPEND 0x04 +#define VTPM_PREPARE_TO_SUSPEND_RES (0x04 | VTPM_MSG_RES) + +#endif |