Caleb Connolly | 90ff581 | 2024-07-15 12:08:02 +0200 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | /* |
| 3 | * Copyright (c) 2016-2019, The Linux Foundation. All rights reserved. |
| 4 | */ |
| 5 | |
| 6 | #ifndef __SOC_QCOM_TCS_H__ |
| 7 | #define __SOC_QCOM_TCS_H__ |
| 8 | |
| 9 | #define MAX_RPMH_PAYLOAD 16 |
| 10 | |
| 11 | /** |
| 12 | * rpmh_state: state for the request |
| 13 | * |
| 14 | * RPMH_SLEEP_STATE: State of the resource when the processor subsystem |
| 15 | * is powered down. There is no client using the |
| 16 | * resource actively. |
| 17 | * RPMH_WAKE_ONLY_STATE: Resume resource state to the value previously |
| 18 | * requested before the processor was powered down. |
| 19 | * RPMH_ACTIVE_ONLY_STATE: Active or AMC mode requests. Resource state |
| 20 | * is aggregated immediately. |
| 21 | */ |
| 22 | enum rpmh_state { |
| 23 | RPMH_SLEEP_STATE, |
| 24 | RPMH_WAKE_ONLY_STATE, |
| 25 | RPMH_ACTIVE_ONLY_STATE, |
| 26 | }; |
| 27 | |
| 28 | /** |
| 29 | * struct tcs_cmd: an individual request to RPMH. |
| 30 | * |
| 31 | * @addr: the address of the resource slv_id:18:16 | offset:0:15 |
| 32 | * @data: the resource state request |
| 33 | * @wait: ensure that this command is complete before returning. |
| 34 | * Setting "wait" here only makes sense during rpmh_write_batch() for |
| 35 | * active-only transfers, this is because: |
| 36 | * rpmh_write() - Always waits. |
| 37 | * (DEFINE_RPMH_MSG_ONSTACK will set .wait_for_compl) |
| 38 | * rpmh_write_async() - Never waits. |
| 39 | * (There's no request completion callback) |
| 40 | */ |
| 41 | struct tcs_cmd { |
| 42 | u32 addr; |
| 43 | u32 data; |
| 44 | u32 wait; |
| 45 | }; |
| 46 | |
| 47 | /** |
| 48 | * struct tcs_request: A set of tcs_cmds sent together in a TCS |
| 49 | * |
| 50 | * @state: state for the request. |
| 51 | * @wait_for_compl: wait until we get a response from the h/w accelerator |
| 52 | * (same as setting cmd->wait for all commands in the request) |
| 53 | * @num_cmds: the number of @cmds in this request |
| 54 | * @cmds: an array of tcs_cmds |
| 55 | */ |
| 56 | struct tcs_request { |
| 57 | enum rpmh_state state; |
| 58 | u32 wait_for_compl; |
| 59 | u32 num_cmds; |
| 60 | struct tcs_cmd *cmds; |
| 61 | }; |
| 62 | |
| 63 | #define BCM_TCS_CMD_COMMIT_SHFT 30 |
| 64 | #define BCM_TCS_CMD_COMMIT_MASK 0x40000000 |
| 65 | #define BCM_TCS_CMD_VALID_SHFT 29 |
| 66 | #define BCM_TCS_CMD_VALID_MASK 0x20000000 |
| 67 | #define BCM_TCS_CMD_VOTE_X_SHFT 14 |
| 68 | #define BCM_TCS_CMD_VOTE_MASK 0x3fff |
| 69 | #define BCM_TCS_CMD_VOTE_Y_SHFT 0 |
| 70 | #define BCM_TCS_CMD_VOTE_Y_MASK 0xfffc000 |
| 71 | |
| 72 | /* Construct a Bus Clock Manager (BCM) specific TCS command */ |
| 73 | #define BCM_TCS_CMD(commit, valid, vote_x, vote_y) \ |
| 74 | (((commit) << BCM_TCS_CMD_COMMIT_SHFT) | \ |
| 75 | ((valid) << BCM_TCS_CMD_VALID_SHFT) | \ |
| 76 | ((cpu_to_le32(vote_x) & \ |
| 77 | BCM_TCS_CMD_VOTE_MASK) << BCM_TCS_CMD_VOTE_X_SHFT) | \ |
| 78 | ((cpu_to_le32(vote_y) & \ |
| 79 | BCM_TCS_CMD_VOTE_MASK) << BCM_TCS_CMD_VOTE_Y_SHFT)) |
| 80 | |
| 81 | #endif /* __SOC_QCOM_TCS_H__ */ |