Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1 | /* Qualcomm TrustZone communicator driver |
| 2 | * |
| 3 | * Copyright (c) 2011, Code Aurora Forum. All rights reserved. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License version 2 and |
| 7 | * only version 2 as published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | */ |
| 14 | |
| 15 | #ifndef __TZCOMI_H_ |
| 16 | #define __TZCOMI_H_ |
| 17 | |
| 18 | #include <linux/types.h> |
| 19 | |
| 20 | enum tz_sched_cmd_id { |
| 21 | TZ_SCHED_CMD_ID_INVALID = 0, |
| 22 | TZ_SCHED_CMD_ID_INIT_SB_OUT, /**< Initialize the shared buffer */ |
| 23 | TZ_SCHED_CMD_ID_INIT_SB_LOG, /**< Initialize the logging shared buf */ |
| 24 | TZ_SCHED_CMD_ID_UNKNOWN = 0x7FFFFFFE, |
| 25 | TZ_SCHED_CMD_ID_MAX = 0x7FFFFFFF |
| 26 | }; |
| 27 | |
| 28 | enum tz_sched_cmd_type { |
| 29 | TZ_SCHED_CMD_INVALID = 0, |
| 30 | TZ_SCHED_CMD_NEW, /** New TZ Scheduler Command */ |
| 31 | TZ_SCHED_CMD_PENDING, /** Pending cmd...sched will restore stack */ |
| 32 | TZ_SCHED_CMD_COMPLETE, /** TZ sched command is complete */ |
| 33 | TZ_SCHED_CMD_MAX = 0x7FFFFFFF |
| 34 | }; |
| 35 | |
| 36 | enum tz_sched_cmd_status { |
| 37 | TZ_SCHED_STATUS_INCOMPLETE = 0, |
| 38 | TZ_SCHED_STATUS_COMPLETE, |
| 39 | TZ_SCHED_STATUS_MAX = 0x7FFFFFFF |
| 40 | }; |
| 41 | |
| 42 | /** Command structure for initializing shared buffers (SB_OUT |
| 43 | and SB_LOG) |
| 44 | */ |
| 45 | __packed struct tz_pr_init_sb_req_s { |
| 46 | /** First 4 bytes should always be command id |
| 47 | * from enum tz_sched_cmd_id */ |
| 48 | uint32_t pr_cmd; |
| 49 | /** Pointer to the physical location of sb_out buffer */ |
| 50 | uint32_t sb_ptr; |
| 51 | /** length of shared buffer */ |
| 52 | uint32_t sb_len; |
| 53 | }; |
| 54 | |
| 55 | |
| 56 | __packed struct tz_pr_init_sb_rsp_s { |
| 57 | /** First 4 bytes should always be command id |
| 58 | * from enum tz_sched_cmd_id */ |
| 59 | uint32_t pr_cmd; |
| 60 | /** Return code, 0 for success, Approp error code otherwise */ |
| 61 | int32_t ret; |
| 62 | }; |
| 63 | |
| 64 | |
| 65 | /** |
| 66 | * struct tzcom_command - tzcom command buffer |
| 67 | * @cmd_type: value from enum tz_sched_cmd_type |
| 68 | * @sb_in_cmd_addr: points to physical location of command |
| 69 | * buffer |
| 70 | * @sb_in_cmd_len: length of command buffer |
| 71 | */ |
| 72 | __packed struct tzcom_command { |
| 73 | uint32_t cmd_type; |
| 74 | uint8_t *sb_in_cmd_addr; |
| 75 | uint32_t sb_in_cmd_len; |
| 76 | }; |
| 77 | |
| 78 | /** |
| 79 | * struct tzcom_response - tzcom response buffer |
| 80 | * @cmd_status: value from enum tz_sched_cmd_status |
| 81 | * @sb_in_rsp_addr: points to physical location of response |
| 82 | * buffer |
| 83 | * @sb_in_rsp_len: length of command response |
| 84 | */ |
| 85 | __packed struct tzcom_response { |
| 86 | uint32_t cmd_status; |
| 87 | uint8_t *sb_in_rsp_addr; |
| 88 | uint32_t sb_in_rsp_len; |
| 89 | }; |
| 90 | |
| 91 | /** |
| 92 | * struct tzcom_callback - tzcom callback buffer |
| 93 | * @cmd_id: command to run in registered service |
| 94 | * @sb_out_rsp_addr: points to physical location of response |
| 95 | * buffer |
| 96 | * @sb_in_cmd_len: length of command response |
| 97 | * |
| 98 | * A callback buffer would be laid out in sb_out as follows: |
| 99 | * |
| 100 | * --------------------- <--- struct tzcom_callback |
| 101 | * | callback header | |
| 102 | * --------------------- <--- tzcom_callback.sb_out_cb_data_off |
| 103 | * | callback data | |
| 104 | * --------------------- |
| 105 | */ |
| 106 | __packed struct tzcom_callback { |
| 107 | uint32_t cmd_id; |
| 108 | uint32_t sb_out_cb_data_len; |
| 109 | uint32_t sb_out_cb_data_off; |
| 110 | }; |
| 111 | |
| 112 | #endif /* __TZCOMI_H_ */ |