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93 lines
2.8 KiB
93 lines
2.8 KiB
/* Copyright (c) 2010-2011, 2016-2018 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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*/
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#ifndef __APR_TAL_H_
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#define __APR_TAL_H_
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#include <linux/kernel.h>
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#include <linux/kthread.h>
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#include <linux/uaccess.h>
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/* APR Client IDs */
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#define APR_CLIENT_AUDIO 0x0
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#define APR_CLIENT_VOICE 0x1
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#define APR_CLIENT_MAX 0x2
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#define APR_DL_SMD 0
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#define APR_DL_MAX 1
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#define APR_DEST_MODEM 0
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#define APR_DEST_QDSP6 1
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#define APR_DEST_MAX 2
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#if defined(CONFIG_MSM_QDSP6_APRV2_GLINK) || \
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defined(CONFIG_MSM_QDSP6_APRV3_GLINK)
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#define APR_MAX_BUF 512
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#else
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#define APR_MAX_BUF 8092
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#endif
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#define APR_DEFAULT_NUM_OF_INTENTS 20
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#define APR_OPEN_TIMEOUT_MS 5000
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enum {
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/* If client sets the pkt_owner to APR_PKT_OWNER_DRIVER, APR
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* driver will allocate a buffer, where the user packet is
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* copied into, for each and every single Tx transmission.
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* The buffer is thereafter passed to underlying link layer
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* and freed upon the notification received from the link layer
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* that the packet has been consumed.
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*/
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APR_PKT_OWNER_DRIVER,
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/* If client sets the pkt_owner to APR_PKT_OWNER_CLIENT, APR
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* will pass the user packet memory address directly to underlying
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* link layer. In this case it is the client's responsibility to
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* make sure the packet is intact until being notified that the
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* packet has been consumed.
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*/
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APR_PKT_OWNER_CLIENT,
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};
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struct apr_pkt_priv {
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/* This property is only applicable for APR over Glink.
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* It is ignored in APR over SMD cases.
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*/
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uint8_t pkt_owner;
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};
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typedef void (*apr_svc_cb_fn)(void *buf, int len, void *priv);
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struct apr_svc_ch_dev *apr_tal_open(uint32_t svc, uint32_t dest,
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uint32_t dl, apr_svc_cb_fn func, void *priv);
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int apr_tal_write(struct apr_svc_ch_dev *apr_ch, void *data,
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struct apr_pkt_priv *pkt_priv, int len);
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int apr_tal_close(struct apr_svc_ch_dev *apr_ch);
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int apr_tal_rx_intents_config(struct apr_svc_ch_dev *apr_ch,
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int num_of_intents, uint32_t size);
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int apr_tal_init(void);
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void apr_tal_exit(void);
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int apr_tal_start_rx_rt(struct apr_svc_ch_dev *apr_ch);
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int apr_tal_end_rx_rt(struct apr_svc_ch_dev *apr_ch);
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struct apr_svc_ch_dev {
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void *handle;
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spinlock_t w_lock;
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spinlock_t r_lock;
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struct mutex m_lock;
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apr_svc_cb_fn func;
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wait_queue_head_t wait;
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void *priv;
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unsigned int channel_state;
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bool if_remote_intent_ready;
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};
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#endif
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