| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | /* |
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| 3 | * Copyright (c) 2003-2018, Intel Corporation. All rights reserved. |
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| 4 | * Intel Management Engine Interface (Intel MEI) Linux driver |
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| 5 | */ |
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| 6 | |
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| 7 | #ifndef _MEI_HBM_H_ |
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| 8 | #define _MEI_HBM_H_ |
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| 9 | |
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| 10 | struct mei_device; |
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| 11 | struct mei_msg_hdr; |
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| 12 | struct mei_cl; |
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| 13 | struct mei_dma_data; |
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| 14 | |
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| 15 | /** |
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| 16 | * enum mei_hbm_state - host bus message protocol state |
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| 17 | * |
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| 18 | * @MEI_HBM_IDLE : protocol not started |
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| 19 | * @MEI_HBM_STARTING : start request message was sent |
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| 20 | * @MEI_HBM_CAP_SETUP : capabilities request message was sent |
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| 21 | * @MEI_HBM_DR_SETUP : dma ring setup request message was sent |
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| 22 | * @MEI_HBM_ENUM_CLIENTS : enumeration request was sent |
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| 23 | * @MEI_HBM_CLIENT_PROPERTIES : acquiring clients properties |
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| 24 | * @MEI_HBM_STARTED : enumeration was completed |
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| 25 | * @MEI_HBM_STOPPED : stopping exchange |
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| 26 | */ |
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| 27 | enum mei_hbm_state { |
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| 28 | MEI_HBM_IDLE = 0, |
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| 29 | MEI_HBM_STARTING, |
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| 30 | MEI_HBM_CAP_SETUP, |
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| 31 | MEI_HBM_DR_SETUP, |
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| 32 | MEI_HBM_ENUM_CLIENTS, |
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| 33 | MEI_HBM_CLIENT_PROPERTIES, |
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| 34 | MEI_HBM_STARTED, |
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| 35 | MEI_HBM_STOPPED, |
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| 36 | }; |
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| 37 | |
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| 38 | const char *mei_hbm_state_str(enum mei_hbm_state state); |
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| 39 | |
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| 40 | int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr); |
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| 41 | |
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| 42 | void mei_hbm_idle(struct mei_device *dev); |
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| 43 | void mei_hbm_reset(struct mei_device *dev); |
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| 44 | int mei_hbm_start_req(struct mei_device *dev); |
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| 45 | int mei_hbm_start_wait(struct mei_device *dev); |
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| 46 | int mei_hbm_cl_flow_control_req(struct mei_device *dev, struct mei_cl *cl); |
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| 47 | int mei_hbm_cl_disconnect_req(struct mei_device *dev, struct mei_cl *cl); |
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| 48 | int mei_hbm_cl_disconnect_rsp(struct mei_device *dev, struct mei_cl *cl); |
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| 49 | int mei_hbm_cl_connect_req(struct mei_device *dev, struct mei_cl *cl); |
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| 50 | bool mei_hbm_version_is_supported(struct mei_device *dev); |
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| 51 | int mei_hbm_pg(struct mei_device *dev, u8 pg_cmd); |
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| 52 | void mei_hbm_pg_resume(struct mei_device *dev); |
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| 53 | int mei_hbm_cl_notify_req(struct mei_device *dev, |
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| 54 | struct mei_cl *cl, u8 request); |
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| 55 | int mei_hbm_cl_dma_map_req(struct mei_device *dev, struct mei_cl *cl); |
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| 56 | int mei_hbm_cl_dma_unmap_req(struct mei_device *dev, struct mei_cl *cl); |
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| 57 | #endif /* _MEI_HBM_H_ */ |
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| 58 | |
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| 59 | |
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