1*132f7629SAshley Lai /* 2*132f7629SAshley Lai * Copyright (C) 2012 IBM Corporation 3*132f7629SAshley Lai * 4*132f7629SAshley Lai * Author: Ashley Lai <adlai@us.ibm.com> 5*132f7629SAshley Lai * 6*132f7629SAshley Lai * Maintained by: <tpmdd-devel@lists.sourceforge.net> 7*132f7629SAshley Lai * 8*132f7629SAshley Lai * Device driver for TCG/TCPA TPM (trusted platform module). 9*132f7629SAshley Lai * Specifications at www.trustedcomputinggroup.org 10*132f7629SAshley Lai * 11*132f7629SAshley Lai * This program is free software; you can redistribute it and/or 12*132f7629SAshley Lai * modify it under the terms of the GNU General Public License as 13*132f7629SAshley Lai * published by the Free Software Foundation, version 2 of the 14*132f7629SAshley Lai * License. 15*132f7629SAshley Lai * 16*132f7629SAshley Lai */ 17*132f7629SAshley Lai 18*132f7629SAshley Lai #ifndef __TPM_IBMVTPM_H__ 19*132f7629SAshley Lai #define __TPM_IBMVTPM_H__ 20*132f7629SAshley Lai 21*132f7629SAshley Lai /* vTPM Message Format 1 */ 22*132f7629SAshley Lai struct ibmvtpm_crq { 23*132f7629SAshley Lai u8 valid; 24*132f7629SAshley Lai u8 msg; 25*132f7629SAshley Lai u16 len; 26*132f7629SAshley Lai u32 data; 27*132f7629SAshley Lai u64 reserved; 28*132f7629SAshley Lai } __attribute__((packed, aligned(8))); 29*132f7629SAshley Lai 30*132f7629SAshley Lai struct ibmvtpm_crq_queue { 31*132f7629SAshley Lai struct ibmvtpm_crq *crq_addr; 32*132f7629SAshley Lai u32 index; 33*132f7629SAshley Lai u32 num_entry; 34*132f7629SAshley Lai }; 35*132f7629SAshley Lai 36*132f7629SAshley Lai struct ibmvtpm_dev { 37*132f7629SAshley Lai struct device *dev; 38*132f7629SAshley Lai struct vio_dev *vdev; 39*132f7629SAshley Lai struct ibmvtpm_crq_queue crq_queue; 40*132f7629SAshley Lai dma_addr_t crq_dma_handle; 41*132f7629SAshley Lai spinlock_t lock; 42*132f7629SAshley Lai struct tasklet_struct tasklet; 43*132f7629SAshley Lai u32 rtce_size; 44*132f7629SAshley Lai void __iomem *rtce_buf; 45*132f7629SAshley Lai dma_addr_t rtce_dma_handle; 46*132f7629SAshley Lai spinlock_t rtce_lock; 47*132f7629SAshley Lai struct ibmvtpm_crq crq_res; 48*132f7629SAshley Lai u32 vtpm_version; 49*132f7629SAshley Lai }; 50*132f7629SAshley Lai 51*132f7629SAshley Lai #define CRQ_RES_BUF_SIZE PAGE_SIZE 52*132f7629SAshley Lai 53*132f7629SAshley Lai /* Initialize CRQ */ 54*132f7629SAshley Lai #define INIT_CRQ_CMD 0xC001000000000000LL /* Init cmd */ 55*132f7629SAshley Lai #define INIT_CRQ_COMP_CMD 0xC002000000000000LL /* Init complete cmd */ 56*132f7629SAshley Lai #define INIT_CRQ_RES 0x01 /* Init respond */ 57*132f7629SAshley Lai #define INIT_CRQ_COMP_RES 0x02 /* Init complete respond */ 58*132f7629SAshley Lai #define VALID_INIT_CRQ 0xC0 /* Valid command for init crq */ 59*132f7629SAshley Lai 60*132f7629SAshley Lai /* vTPM CRQ response is the message type | 0x80 */ 61*132f7629SAshley Lai #define VTPM_MSG_RES 0x80 62*132f7629SAshley Lai #define IBMVTPM_VALID_CMD 0x80 63*132f7629SAshley Lai 64*132f7629SAshley Lai /* vTPM CRQ message types */ 65*132f7629SAshley Lai #define VTPM_GET_VERSION 0x01 66*132f7629SAshley Lai #define VTPM_GET_VERSION_RES (0x01 | VTPM_MSG_RES) 67*132f7629SAshley Lai 68*132f7629SAshley Lai #define VTPM_TPM_COMMAND 0x02 69*132f7629SAshley Lai #define VTPM_TPM_COMMAND_RES (0x02 | VTPM_MSG_RES) 70*132f7629SAshley Lai 71*132f7629SAshley Lai #define VTPM_GET_RTCE_BUFFER_SIZE 0x03 72*132f7629SAshley Lai #define VTPM_GET_RTCE_BUFFER_SIZE_RES (0x03 | VTPM_MSG_RES) 73*132f7629SAshley Lai 74*132f7629SAshley Lai #define VTPM_PREPARE_TO_SUSPEND 0x04 75*132f7629SAshley Lai #define VTPM_PREPARE_TO_SUSPEND_RES (0x04 | VTPM_MSG_RES) 76*132f7629SAshley Lai 77*132f7629SAshley Lai #endif 78