794c02be95
Currently, get_service_location() expects "char *" for client name and service name from clients. Update this to "const char *" as they're not supposed to be changed by service locator. This also helps clients to pass a "const char *" when it reads strings from device tree using of_property_read_string_index(). Change-Id: I98d32524151b2486863e7fd51c56bc8f16262808 Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>
94 lines
2.7 KiB
C
94 lines
2.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2015-2016, 2018-2020, The Linux Foundation. All rights reserved.
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*/
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/*
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* Process Domain Service Locator API header
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*
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*/
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#ifndef _SERVICE_LOCATOR_H
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#define _SERVICE_LOCATOR_H
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#include <linux/types.h>
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#define QMI_SERVREG_LOC_NAME_LENGTH_V01 64
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#define QMI_SERVREG_LOC_LIST_LENGTH_V01 32
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/*
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* @name: The full process domain path for a process domain which provides
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* a particular service
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* @instance_id: The QMI instance id corresponding to the root process
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* domain which is responsible for notifications for this
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* process domain
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* @service_data_valid: Indicates if service_data field has valid data
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* @service_data: Optional service data provided by the service locator
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*/
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struct servreg_loc_entry_v01 {
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char name[QMI_SERVREG_LOC_NAME_LENGTH_V01 + 1];
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uint32_t instance_id;
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uint8_t service_data_valid;
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uint32_t service_data;
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};
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/*
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* @client_name: Name of the client calling the api
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* @service_name: Name of the service for which the list of process domains
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* is requested
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* @total_domains: Length of the process domain list
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* @db_rev_count: Process domain list database revision number
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* @domain_list: List of process domains providing the service
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*/
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struct pd_qmi_client_data {
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char client_name[QMI_SERVREG_LOC_NAME_LENGTH_V01 + 1];
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char service_name[QMI_SERVREG_LOC_NAME_LENGTH_V01 + 1];
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int total_domains;
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int db_rev_count;
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struct servreg_loc_entry_v01 *domain_list;
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};
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enum service_locator_state {
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LOCATOR_DOWN = 0x0F,
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LOCATOR_UP = 0x1F,
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};
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struct notifier_block;
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#if IS_ENABLED(CONFIG_MSM_SERVICE_LOCATOR)
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/*
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* Use this api to request information regarding the process domains on
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* which a particular service runs. The client name, the service name
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* and notifier block pointer need to be provided by client calling the api.
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* The total domains, db revision and the domain list will be filled in
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* by the service locator.
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* Returns 0 on success; otherwise a value < 0 if no valid subsystem is found.
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*/
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int get_service_location(const char *client_name, const char *service_name,
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struct notifier_block *locator_nb);
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/*
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* Use this api to request information regarding the subsystem the process
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* domain runs on.
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* @pd_path: The name field from inside the servreg_loc_entry that one
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* gets back using the get_processdomains api.
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* Returns 0 on success; otherwise a value < 0 if no valid subsystem is found.
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*/
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int find_subsys(const char *pd_path, char *subsys);
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#else
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static inline int get_service_location(const char *client_name,
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const char *service_name, struct notifier_block *locator_nb)
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{
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return -ENODEV;
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}
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static inline int find_subsys(const char *pd_path, const char *subsys)
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{
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return 0;
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}
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#endif /* CONFIG_MSM_SERVICE_LOCATOR */
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#endif
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