/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.
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*/
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#ifndef __RPM_INTERNAL_H__
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#define __RPM_INTERNAL_H__
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#include <linux/bitmap.h>
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#include <soc/qcom/tcs.h>
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#define TCS_TYPE_NR 4
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#define MAX_CMDS_PER_TCS 16
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#define MAX_TCS_PER_TYPE 3
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#define MAX_TCS_NR (MAX_TCS_PER_TYPE * TCS_TYPE_NR)
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#define MAX_TCS_SLOTS (MAX_CMDS_PER_TCS * MAX_TCS_PER_TYPE)
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struct rsc_drv;
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/**
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* struct tcs_group: group of Trigger Command Sets (TCS) to send state requests
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* to the controller
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*
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* @drv: the controller
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* @type: type of the TCS in this group - active, sleep, wake
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* @mask: mask of the TCSes relative to all the TCSes in the RSC
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* @offset: start of the TCS group relative to the TCSes in the RSC
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* @num_tcs: number of TCSes in this type
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* @ncpt: number of commands in each TCS
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* @lock: lock for synchronizing this TCS writes
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* @req: requests that are sent from the TCS
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* @cmd_cache: flattened cache of cmds in sleep/wake TCS
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* @slots: indicates which of @cmd_addr are occupied
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*/
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struct tcs_group {
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struct rsc_drv *drv;
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int type;
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u32 mask;
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u32 offset;
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int num_tcs;
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int ncpt;
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spinlock_t lock;
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const struct tcs_request *req[MAX_TCS_PER_TYPE];
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u32 *cmd_cache;
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DECLARE_BITMAP(slots, MAX_TCS_SLOTS);
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};
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/**
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* struct rpmh_request: the message to be sent to rpmh-rsc
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*
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* @msg: the request
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* @cmd: the payload that will be part of the @msg
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* @completion: triggered when request is done
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* @dev: the device making the request
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* @err: err return from the controller
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* @needs_free: check to free dynamically allocated request object
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*/
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struct rpmh_request {
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struct tcs_request msg;
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struct tcs_cmd cmd[MAX_RPMH_PAYLOAD];
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struct completion *completion;
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const struct device *dev;
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int err;
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bool needs_free;
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};
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/**
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* struct rpmh_ctrlr: our representation of the controller
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*
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* @cache: the list of cached requests
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* @cache_lock: synchronize access to the cache data
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* @dirty: was the cache updated since flush
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* @batch_cache: Cache sleep and wake requests sent as batch
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*/
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struct rpmh_ctrlr {
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struct list_head cache;
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spinlock_t cache_lock;
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bool dirty;
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struct list_head batch_cache;
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};
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/**
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* struct rsc_drv: the Direct Resource Voter (DRV) of the
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* Resource State Coordinator controller (RSC)
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*
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* @name: controller identifier
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* @tcs_base: start address of the TCS registers in this controller
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* @id: instance id in the controller (Direct Resource Voter)
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* @num_tcs: number of TCSes in this DRV
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* @tcs: TCS groups
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* @tcs_in_use: s/w state of the TCS
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* @lock: synchronize state of the controller
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* @client: handle to the DRV's client.
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*/
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struct rsc_drv {
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const char *name;
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void __iomem *tcs_base;
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int id;
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int num_tcs;
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struct tcs_group tcs[TCS_TYPE_NR];
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DECLARE_BITMAP(tcs_in_use, MAX_TCS_NR);
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spinlock_t lock;
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struct rpmh_ctrlr client;
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};
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int rpmh_rsc_send_data(struct rsc_drv *drv, const struct tcs_request *msg);
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int rpmh_rsc_write_ctrl_data(struct rsc_drv *drv,
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const struct tcs_request *msg);
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int rpmh_rsc_invalidate(struct rsc_drv *drv);
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void rpmh_tx_done(const struct tcs_request *msg, int r);
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#endif /* __RPM_INTERNAL_H__ */
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