112 lines
3.6 KiB
C
112 lines
3.6 KiB
C
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/* Copyright (c) 2012, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef SENSORS_ADSP_H
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#define SENSORS_ADSP_H
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#include <linux/types.h>
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/** Maximum number of segments that may be mapped from DDR to OCMEM */
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#define SNS_OCMEM_MAX_NUM_SEG_V01 16
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/** Maximum size of the ocmem_vectors structure */
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#define SNS_OCMEM_MAX_VECTORS_SIZE_V01 512
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/* Sensor OCMEM message id */
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#define SNS_OCMEM_CANCEL_REQ_V01 0x0000
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#define SNS_OCMEM_CANCEL_RESP_V01 0x0000
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#define SNS_OCMEM_VERSION_REQ_V01 0x0001
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#define SNS_OCMEM_VERSION_RESP_V01 0x0001
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#define SNS_OCMEM_PHYS_ADDR_REQ_V01 0x0002
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#define SNS_OCMEM_PHYS_ADDR_RESP_V01 0x0002
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#define SNS_OCMEM_HAS_CLIENT_IND_V01 0x0002
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#define SNS_OCMEM_BW_VOTE_REQ_V01 0x0003
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#define SNS_OCMEM_BW_VOTE_RESP_V01 0x0003
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#define SNS_OCMEM_BW_VOTE_IND_V01 0x0003
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enum {
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SNS_OCMEM_MODULE_KERNEL = 0,
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SNS_OCMEM_MODULE_ADSP
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};
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/**
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* Defines the types of response messages
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*/
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enum {
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SNS_OCMEM_MSG_TYPE_REQ = 0, /* Request */
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SNS_OCMEM_MSG_TYPE_RESP, /* Response to a request */
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SNS_OCMEM_MSG_TYPE_IND /* Asynchronous indication */
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};
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/**
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* The message header. Used in both incoming and outgoing messages
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*/
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struct sns_ocmem_hdr_s {
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int32_t msg_id ; /* Message ID, as defined in the IDL */
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uint16_t msg_size; /* Size of message, in bytes */
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uint8_t dst_module; /* Destination module */
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uint8_t src_module; /* Source module */
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uint8_t msg_type; /* The message type */
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} __packed;
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struct sns_ocmem_common_resp_s_v01 {
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/* This shall be the first element of every response message */
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uint8_t sns_result_t;
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/**< 0 == SUCCESS; 1 == FAILURE
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A result of FAILURE indicates that that any data contained in the
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response should not be used other than sns_err_t, to determine the
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type of error */
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uint8_t sns_err_t;
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/**< See sns_ocmem_error_e in ocmem_sensors.h */
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};
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/* This structure represents a single memory region that must be
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mapped from DDR to OCMEM */
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struct sns_mem_segment_s_v01 {
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uint64_t start_address; /* Physical start address of segment */
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uint32_t size; /* Size (in bytes) of this segment */
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uint16_t type; /* 1 == Read only; 2 == Read/Write Data */
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} __packed;
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struct sns_ocmem_phys_addr_resp_msg_v01 {
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struct sns_ocmem_common_resp_s_v01 resp; /* response */
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uint32_t segments_len; /* number of elements in segments */
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/* Segments mapped from DDR to OCMEM */
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struct sns_mem_segment_s_v01 segments[SNS_OCMEM_MAX_NUM_SEG_V01];
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uint8_t segments_valid; /* true if segments is being passed */
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} __packed ;
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struct sns_ocmem_has_client_ind_msg_v01 {
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uint16_t num_clients; /* Number of active clients on the ADSP */
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} __packed;
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struct sns_ocmem_bw_vote_req_msg_v01 {
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uint8_t is_map; /* True if mapping; false if unmapping */
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uint8_t vectors_valid; /* True if vectors is being passed */
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uint32_t vectors_len; /* Number of elements in vectors */
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uint8_t vectors[SNS_OCMEM_MAX_VECTORS_SIZE_V01]; /* vectors */
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} __packed;
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struct sns_ocmem_bw_vote_resp_msg_v01 {
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struct sns_ocmem_common_resp_s_v01 resp;
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};
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struct sns_ocmem_bw_vote_ind_msg_v01 {
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/* If the ADSP just voted for, or took away its vote for
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OCMEM bandwidth */
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uint8_t is_vote_on;
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} __packed;
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#endif /* SENSORS_ADSP_H */
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