diff options
Diffstat (limited to 'drivers/scsi/ufs/ufs-qcom-ice.h')
| -rw-r--r-- | drivers/scsi/ufs/ufs-qcom-ice.h | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufs-qcom-ice.h b/drivers/scsi/ufs/ufs-qcom-ice.h new file mode 100644 index 000000000000..eb0291612049 --- /dev/null +++ b/drivers/scsi/ufs/ufs-qcom-ice.h @@ -0,0 +1,132 @@ +/* + * Copyright (c) 2014-2016, The Linux Foundation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef _UFS_QCOM_ICE_H_ +#define _UFS_QCOM_ICE_H_ + +#include <scsi/scsi_cmnd.h> + +#include "ufs-qcom.h" + +/* + * UFS host controller ICE registers. There are n [0..31] + * of each of these registers + */ +enum { + REG_UFS_QCOM_ICE_CFG = 0x2200, + REG_UFS_QCOM_ICE_CTRL_INFO_1_n = 0x2204, + REG_UFS_QCOM_ICE_CTRL_INFO_2_n = 0x2208, + REG_UFS_QCOM_ICE_CTRL_INFO_3_n = 0x220C, +}; +#define NUM_QCOM_ICE_CTRL_INFO_n_REGS 32 + +/* UFS QCOM ICE CTRL Info register offset */ +enum { + OFFSET_UFS_QCOM_ICE_CTRL_INFO_BYPASS = 0, + OFFSET_UFS_QCOM_ICE_CTRL_INFO_KEY_INDEX = 0x1, + OFFSET_UFS_QCOM_ICE_CTRL_INFO_CDU = 0x6, +}; + +/* UFS QCOM ICE CTRL Info register masks */ +enum { + MASK_UFS_QCOM_ICE_CTRL_INFO_BYPASS = 0x1, + MASK_UFS_QCOM_ICE_CTRL_INFO_KEY_INDEX = 0x1F, + MASK_UFS_QCOM_ICE_CTRL_INFO_CDU = 0x8, +}; + +/* UFS QCOM ICE encryption/decryption bypass state */ +enum { + UFS_QCOM_ICE_DISABLE_BYPASS = 0, + UFS_QCOM_ICE_ENABLE_BYPASS = 1, +}; + +/* UFS QCOM ICE Crypto Data Unit of target DUN of Transfer Request */ +enum { + UFS_QCOM_ICE_TR_DATA_UNIT_512_B = 0, + UFS_QCOM_ICE_TR_DATA_UNIT_1_KB = 1, + UFS_QCOM_ICE_TR_DATA_UNIT_2_KB = 2, + UFS_QCOM_ICE_TR_DATA_UNIT_4_KB = 3, + UFS_QCOM_ICE_TR_DATA_UNIT_8_KB = 4, + UFS_QCOM_ICE_TR_DATA_UNIT_16_KB = 5, + UFS_QCOM_ICE_TR_DATA_UNIT_32_KB = 6, +}; + +/* UFS QCOM ICE internal state */ +enum { + UFS_QCOM_ICE_STATE_DISABLED = 0, + UFS_QCOM_ICE_STATE_ACTIVE = 1, + UFS_QCOM_ICE_STATE_SUSPENDED = 2, +}; + +#ifdef CONFIG_SCSI_UFS_QCOM_ICE +int ufs_qcom_ice_get_dev(struct ufs_qcom_host *qcom_host); +int ufs_qcom_ice_init(struct ufs_qcom_host *qcom_host); +int ufs_qcom_ice_req_setup(struct ufs_qcom_host *qcom_host, + struct scsi_cmnd *cmd, u8 *cc_index, bool *enable); +int ufs_qcom_ice_cfg_start(struct ufs_qcom_host *qcom_host, + struct scsi_cmnd *cmd); +int ufs_qcom_ice_cfg_end(struct ufs_qcom_host *qcom_host, + struct request *req); +int ufs_qcom_ice_reset(struct ufs_qcom_host *qcom_host); +int ufs_qcom_ice_resume(struct ufs_qcom_host *qcom_host); +int ufs_qcom_ice_suspend(struct ufs_qcom_host *qcom_host); +int ufs_qcom_ice_get_status(struct ufs_qcom_host *qcom_host, int *ice_status); +void ufs_qcom_ice_print_regs(struct ufs_qcom_host *qcom_host); +#else +inline int ufs_qcom_ice_get_dev(struct ufs_qcom_host *qcom_host) +{ + if (qcom_host) { + qcom_host->ice.pdev = NULL; + qcom_host->ice.vops = NULL; + } + return -ENODEV; +} +inline int ufs_qcom_ice_init(struct ufs_qcom_host *qcom_host) +{ + return 0; +} +inline int ufs_qcom_ice_cfg_start(struct ufs_qcom_host *qcom_host, + struct scsi_cmnd *cmd) +{ + return 0; +} +inline int ufs_qcom_ice_cfg_end(struct ufs_qcom_host *qcom_host, + struct request *req) +{ + return 0; +} +inline int ufs_qcom_ice_reset(struct ufs_qcom_host *qcom_host) +{ + return 0; +} +inline int ufs_qcom_ice_resume(struct ufs_qcom_host *qcom_host) +{ + return 0; +} +inline int ufs_qcom_ice_suspend(struct ufs_qcom_host *qcom_host) +{ + return 0; +} +inline int ufs_qcom_ice_get_status(struct ufs_qcom_host *qcom_host, + int *ice_status) +{ + return 0; +} +inline void ufs_qcom_ice_print_regs(struct ufs_qcom_host *qcom_host) +{ + return; +} +#endif /* CONFIG_SCSI_UFS_QCOM_ICE */ + +#endif /* UFS_QCOM_ICE_H_ */ |