Merge "ipc: delete apr tal over glink"
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cfaa87458b
1 changed files with 0 additions and 482 deletions
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@ -1,482 +0,0 @@
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/*
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* Copyright (c) 2016-2017 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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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/uaccess.h>
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#include <linux/spinlock.h>
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#include <linux/mutex.h>
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#include <linux/sched.h>
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#include <linux/wait.h>
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#include <linux/errno.h>
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#include <linux/fs.h>
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#include <linux/slab.h>
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#include <linux/debugfs.h>
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#include <linux/platform_device.h>
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#include <linux/delay.h>
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#include <linux/clk.h>
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#include <soc/qcom/glink.h>
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#include <ipc/apr_tal.h>
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#define APR_MAXIMUM_NUM_OF_RETRIES 2
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struct apr_tx_buf {
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struct apr_pkt_priv pkt_priv;
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char buf[APR_MAX_BUF];
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};
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struct link_state {
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uint32_t dest;
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void *handle;
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enum glink_link_state link_state;
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wait_queue_head_t wait;
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};
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static struct link_state link_state[APR_DEST_MAX];
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static char *svc_names[APR_DEST_MAX][APR_CLIENT_MAX] = {
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{
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"apr_audio_svc",
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"apr_voice_svc",
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},
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{
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"apr_audio_svc",
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"apr_voice_svc",
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},
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};
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static struct apr_svc_ch_dev
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apr_svc_ch[APR_DL_MAX][APR_DEST_MAX][APR_CLIENT_MAX];
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static struct apr_tx_buf *apr_alloc_buf(int len)
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{
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if (len > APR_MAX_BUF) {
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pr_err("%s: buf too large [%d]\n", __func__, len);
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return ERR_PTR(-EINVAL);
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}
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return kzalloc(sizeof(struct apr_tx_buf), GFP_ATOMIC);
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}
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static void apr_free_buf(const void *ptr)
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{
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struct apr_pkt_priv *apr_pkt_priv = (struct apr_pkt_priv *)ptr;
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struct apr_tx_buf *tx_buf;
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if (!apr_pkt_priv) {
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pr_err("%s: Invalid apr_pkt_priv\n", __func__);
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return;
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}
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if (apr_pkt_priv->pkt_owner == APR_PKT_OWNER_DRIVER) {
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tx_buf = container_of((void *)apr_pkt_priv,
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struct apr_tx_buf, pkt_priv);
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pr_debug("%s: Freeing buffer %pK", __func__, tx_buf);
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kfree(tx_buf);
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}
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}
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static 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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{
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int rc = 0;
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unsigned long flags;
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spin_lock_irqsave(&apr_ch->w_lock, flags);
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rc = glink_tx(apr_ch->handle, pkt_priv, data, len, GLINK_TX_ATOMIC);
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spin_unlock_irqrestore(&apr_ch->w_lock, flags);
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if (rc)
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pr_err("%s: glink_tx failed, rc[%d]\n", __func__, rc);
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else
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rc = len;
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return rc;
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}
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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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{
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int rc = 0, retries = 0;
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void *pkt_data = NULL;
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struct apr_tx_buf *tx_buf = NULL;
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struct apr_pkt_priv *pkt_priv_ptr = pkt_priv;
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if (!apr_ch->handle || !pkt_priv)
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return -EINVAL;
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if (pkt_priv->pkt_owner == APR_PKT_OWNER_DRIVER) {
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tx_buf = apr_alloc_buf(len);
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if (IS_ERR_OR_NULL(tx_buf)) {
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rc = -EINVAL;
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goto exit;
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}
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memcpy(tx_buf->buf, data, len);
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memcpy(&tx_buf->pkt_priv, pkt_priv, sizeof(tx_buf->pkt_priv));
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pkt_priv_ptr = &tx_buf->pkt_priv;
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pkt_data = tx_buf->buf;
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} else {
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pkt_data = data;
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}
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do {
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if (rc == -EAGAIN)
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udelay(50);
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rc = __apr_tal_write(apr_ch, pkt_data, pkt_priv_ptr, len);
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} while (rc == -EAGAIN && retries++ < APR_MAXIMUM_NUM_OF_RETRIES);
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if (rc < 0) {
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pr_err("%s: Unable to send the packet, rc:%d\n", __func__, rc);
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if (pkt_priv->pkt_owner == APR_PKT_OWNER_DRIVER)
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kfree(tx_buf);
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}
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exit:
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return rc;
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}
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void apr_tal_notify_rx(void *handle, const void *priv, const void *pkt_priv,
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const void *ptr, size_t size)
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{
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struct apr_svc_ch_dev *apr_ch = (struct apr_svc_ch_dev *)priv;
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unsigned long flags;
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if (!apr_ch || !ptr) {
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pr_err("%s: Invalid apr_ch or ptr\n", __func__);
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return;
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}
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pr_debug("%s: Rx packet received\n", __func__);
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spin_lock_irqsave(&apr_ch->r_lock, flags);
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if (apr_ch->func)
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apr_ch->func((void *)ptr, size, (void *)pkt_priv);
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spin_unlock_irqrestore(&apr_ch->r_lock, flags);
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glink_rx_done(apr_ch->handle, ptr, true);
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}
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static void apr_tal_notify_tx_abort(void *handle, const void *priv,
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const void *pkt_priv)
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{
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pr_debug("%s: tx_abort received for pkt_priv:%pK\n",
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__func__, pkt_priv);
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apr_free_buf(pkt_priv);
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}
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void apr_tal_notify_tx_done(void *handle, const void *priv,
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const void *pkt_priv, const void *ptr)
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{
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pr_debug("%s: tx_done received for pkt_priv:%pK\n",
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__func__, pkt_priv);
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apr_free_buf(pkt_priv);
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}
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bool apr_tal_notify_rx_intent_req(void *handle, const void *priv,
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size_t req_size)
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{
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struct apr_svc_ch_dev *apr_ch = (struct apr_svc_ch_dev *)priv;
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if (!apr_ch) {
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pr_err("%s: Invalid apr_ch\n", __func__);
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return false;
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}
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pr_err("%s: No rx intents queued, unable to receive\n", __func__);
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return false;
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}
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static void apr_tal_notify_remote_rx_intent(void *handle, const void *priv,
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size_t size)
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{
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struct apr_svc_ch_dev *apr_ch = (struct apr_svc_ch_dev *)priv;
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if (!apr_ch) {
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pr_err("%s: Invalid apr_ch\n", __func__);
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return;
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}
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/*
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* This is to make sure that the far end has queued at least one intent
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* before we attmpt any IPC. A simple bool flag is used here instead of
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* a counter, as the far end is required to guarantee intent
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* availability for all use cases once the channel is fully opened.
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*/
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pr_debug("%s: remote queued an intent\n", __func__);
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apr_ch->if_remote_intent_ready = true;
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wake_up(&apr_ch->wait);
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}
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void apr_tal_notify_state(void *handle, const void *priv, unsigned int event)
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{
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struct apr_svc_ch_dev *apr_ch = (struct apr_svc_ch_dev *)priv;
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if (!apr_ch) {
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pr_err("%s: Invalid apr_ch\n", __func__);
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return;
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}
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apr_ch->channel_state = event;
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pr_info("%s: Channel state[%d]\n", __func__, event);
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if (event == GLINK_CONNECTED)
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wake_up(&apr_ch->wait);
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}
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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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{
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int i;
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int rc = 0;
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if (!apr_ch || !num_of_intents || !size) {
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pr_err("%s: Invalid parameter\n", __func__);
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return -EINVAL;
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}
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for (i = 0; i < num_of_intents; i++) {
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rc = glink_queue_rx_intent(apr_ch->handle, apr_ch, size);
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if (rc) {
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pr_err("%s: Failed to queue rx intent, iteration[%d]\n",
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__func__, i);
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break;
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}
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}
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return rc;
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}
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struct apr_svc_ch_dev *apr_tal_open(uint32_t clnt, uint32_t dest, uint32_t dl,
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apr_svc_cb_fn func, void *priv)
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{
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int rc;
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struct glink_open_config open_cfg;
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struct apr_svc_ch_dev *apr_ch;
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if ((clnt >= APR_CLIENT_MAX) || (dest >= APR_DEST_MAX) ||
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(dl >= APR_DL_MAX)) {
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pr_err("%s: Invalid params, clnt:%d, dest:%d, dl:%d\n",
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__func__, clnt, dest, dl);
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return NULL;
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}
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apr_ch = &apr_svc_ch[dl][dest][clnt];
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mutex_lock(&apr_ch->m_lock);
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if (apr_ch->handle) {
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pr_err("%s: This channel is already opened\n", __func__);
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rc = -EBUSY;
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goto unlock;
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}
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if (link_state[dest].link_state != GLINK_LINK_STATE_UP) {
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rc = wait_event_timeout(link_state[dest].wait,
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link_state[dest].link_state == GLINK_LINK_STATE_UP,
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msecs_to_jiffies(APR_OPEN_TIMEOUT_MS));
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if (rc == 0) {
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pr_err("%s: Open timeout, dest:%d\n", __func__, dest);
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rc = -ETIMEDOUT;
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goto unlock;
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}
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pr_debug("%s: Wakeup done, dest:%d\n", __func__, dest);
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}
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memset(&open_cfg, 0, sizeof(struct glink_open_config));
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open_cfg.options = GLINK_OPT_INITIAL_XPORT;
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if (dest == APR_DEST_MODEM)
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open_cfg.edge = "mpss";
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else
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open_cfg.edge = "lpass";
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open_cfg.name = svc_names[dest][clnt];
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open_cfg.notify_rx = apr_tal_notify_rx;
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open_cfg.notify_tx_done = apr_tal_notify_tx_done;
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open_cfg.notify_state = apr_tal_notify_state;
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open_cfg.notify_rx_intent_req = apr_tal_notify_rx_intent_req;
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open_cfg.notify_remote_rx_intent = apr_tal_notify_remote_rx_intent;
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open_cfg.notify_tx_abort = apr_tal_notify_tx_abort;
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open_cfg.priv = apr_ch;
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open_cfg.transport = "smem";
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apr_ch->channel_state = GLINK_REMOTE_DISCONNECTED;
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apr_ch->handle = glink_open(&open_cfg);
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if (IS_ERR_OR_NULL(apr_ch->handle)) {
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pr_err("%s: glink_open failed %s\n", __func__,
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svc_names[dest][clnt]);
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apr_ch->handle = NULL;
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rc = -EINVAL;
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goto unlock;
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}
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rc = wait_event_timeout(apr_ch->wait,
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(apr_ch->channel_state == GLINK_CONNECTED), 5 * HZ);
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if (rc == 0) {
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pr_err("%s: TIMEOUT for OPEN event\n", __func__);
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rc = -ETIMEDOUT;
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goto close_link;
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}
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/*
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* Remote intent is not required for GLINK <--> SMD IPC, so this is
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* designed not to fail the open call.
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*/
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rc = wait_event_timeout(apr_ch->wait,
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apr_ch->if_remote_intent_ready, 5 * HZ);
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if (rc == 0)
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pr_err("%s: TIMEOUT for remote intent readiness\n", __func__);
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rc = apr_tal_rx_intents_config(apr_ch, APR_DEFAULT_NUM_OF_INTENTS,
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APR_MAX_BUF);
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if (rc) {
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pr_err("%s: Unable to queue intents\n", __func__);
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goto close_link;
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}
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apr_ch->func = func;
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apr_ch->priv = priv;
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close_link:
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if (rc) {
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glink_close(apr_ch->handle);
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apr_ch->handle = NULL;
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}
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unlock:
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mutex_unlock(&apr_ch->m_lock);
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return rc ? NULL : apr_ch;
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}
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int apr_tal_start_rx_rt(struct apr_svc_ch_dev *apr_ch)
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{
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int rc = 0;
|
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if (!apr_ch || !apr_ch->handle) {
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rc = -EINVAL;
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goto exit;
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}
|
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|
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mutex_lock(&apr_ch->m_lock);
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rc = glink_start_rx_rt(apr_ch->handle);
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mutex_unlock(&apr_ch->m_lock);
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exit:
|
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return rc;
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}
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|
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int apr_tal_end_rx_rt(struct apr_svc_ch_dev *apr_ch)
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{
|
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int rc = 0;
|
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|
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if (!apr_ch || !apr_ch->handle) {
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rc = -EINVAL;
|
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goto exit;
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}
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|
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mutex_lock(&apr_ch->m_lock);
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rc = glink_end_rx_rt(apr_ch->handle);
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mutex_unlock(&apr_ch->m_lock);
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exit:
|
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return rc;
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}
|
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|
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int apr_tal_close(struct apr_svc_ch_dev *apr_ch)
|
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{
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int rc;
|
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|
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if (!apr_ch || !apr_ch->handle) {
|
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rc = -EINVAL;
|
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goto exit;
|
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}
|
||||
|
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mutex_lock(&apr_ch->m_lock);
|
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rc = glink_close(apr_ch->handle);
|
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apr_ch->handle = NULL;
|
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apr_ch->func = NULL;
|
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apr_ch->priv = NULL;
|
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apr_ch->if_remote_intent_ready = false;
|
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mutex_unlock(&apr_ch->m_lock);
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exit:
|
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return rc;
|
||||
}
|
||||
|
||||
static void apr_tal_link_state_cb(struct glink_link_state_cb_info *cb_info,
|
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void *priv)
|
||||
{
|
||||
uint32_t dest;
|
||||
|
||||
if (!cb_info) {
|
||||
pr_err("%s: Invalid cb_info\n", __func__);
|
||||
return;
|
||||
}
|
||||
|
||||
if (!strcmp(cb_info->edge, "mpss"))
|
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dest = APR_DEST_MODEM;
|
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else if (!strcmp(cb_info->edge, "lpass"))
|
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dest = APR_DEST_QDSP6;
|
||||
else {
|
||||
pr_err("%s:Unknown edge[%s]\n", __func__, cb_info->edge);
|
||||
return;
|
||||
}
|
||||
|
||||
pr_info("%s: edge[%s] link state[%d]\n", __func__, cb_info->edge,
|
||||
cb_info->link_state);
|
||||
|
||||
link_state[dest].link_state = cb_info->link_state;
|
||||
if (link_state[dest].link_state == GLINK_LINK_STATE_UP)
|
||||
wake_up(&link_state[dest].wait);
|
||||
}
|
||||
|
||||
static struct glink_link_info mpss_link_info = {
|
||||
.transport = "smem",
|
||||
.edge = "mpss",
|
||||
.glink_link_state_notif_cb = apr_tal_link_state_cb,
|
||||
};
|
||||
|
||||
static struct glink_link_info lpass_link_info = {
|
||||
.transport = "smem",
|
||||
.edge = "lpass",
|
||||
.glink_link_state_notif_cb = apr_tal_link_state_cb,
|
||||
};
|
||||
|
||||
int apr_tal_init(void)
|
||||
{
|
||||
int i, j, k;
|
||||
|
||||
for (i = 0; i < APR_DL_MAX; i++) {
|
||||
for (j = 0; j < APR_DEST_MAX; j++) {
|
||||
for (k = 0; k < APR_CLIENT_MAX; k++) {
|
||||
init_waitqueue_head(&apr_svc_ch[i][j][k].wait);
|
||||
spin_lock_init(&apr_svc_ch[i][j][k].w_lock);
|
||||
spin_lock_init(&apr_svc_ch[i][j][k].r_lock);
|
||||
mutex_init(&apr_svc_ch[i][j][k].m_lock);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
for (i = 0; i < APR_DEST_MAX; i++)
|
||||
init_waitqueue_head(&link_state[i].wait);
|
||||
|
||||
link_state[APR_DEST_MODEM].link_state = GLINK_LINK_STATE_DOWN;
|
||||
link_state[APR_DEST_MODEM].handle =
|
||||
glink_register_link_state_cb(&mpss_link_info, NULL);
|
||||
if (!link_state[APR_DEST_MODEM].handle)
|
||||
pr_err("%s: Unable to register mpss link state\n", __func__);
|
||||
|
||||
link_state[APR_DEST_QDSP6].link_state = GLINK_LINK_STATE_DOWN;
|
||||
link_state[APR_DEST_QDSP6].handle =
|
||||
glink_register_link_state_cb(&lpass_link_info, NULL);
|
||||
if (!link_state[APR_DEST_QDSP6].handle)
|
||||
pr_err("%s: Unable to register lpass link state\n", __func__);
|
||||
|
||||
return 0;
|
||||
}
|
||||
Loading…
Add table
Reference in a new issue