829 lines
21 KiB
C
829 lines
21 KiB
C
// SPDX-License-Identifier: BSD-3-Clause-Clear
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/*
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* Copyright (c) 2018-2019 The Linux Foundation. All rights reserved.
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*/
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#include <linux/skbuff.h>
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#include <linux/ctype.h>
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#include "debug.h"
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#include "hif.h"
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struct sk_buff *ath11k_htc_alloc_skb(struct ath11k_base *ab, int size)
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{
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struct sk_buff *skb;
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skb = dev_alloc_skb(size + sizeof(struct ath11k_htc_hdr));
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if (!skb)
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return NULL;
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skb_reserve(skb, sizeof(struct ath11k_htc_hdr));
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/* FW/HTC requires 4-byte aligned streams */
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if (!IS_ALIGNED((unsigned long)skb->data, 4))
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ath11k_warn(ab, "Unaligned HTC tx skb\n");
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return skb;
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}
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static void ath11k_htc_control_tx_complete(struct ath11k_base *ab,
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struct sk_buff *skb)
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{
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kfree_skb(skb);
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}
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static struct sk_buff *ath11k_htc_build_tx_ctrl_skb(void *ab)
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{
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struct sk_buff *skb;
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struct ath11k_skb_cb *skb_cb;
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skb = dev_alloc_skb(ATH11K_HTC_CONTROL_BUFFER_SIZE);
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if (!skb)
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return NULL;
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skb_reserve(skb, sizeof(struct ath11k_htc_hdr));
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WARN_ON_ONCE(!IS_ALIGNED((unsigned long)skb->data, 4));
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skb_cb = ATH11K_SKB_CB(skb);
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memset(skb_cb, 0, sizeof(*skb_cb));
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ath11k_dbg(ab, ATH11K_DBG_HTC, "%s: skb %pK\n", __func__, skb);
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return skb;
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}
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static void ath11k_htc_prepare_tx_skb(struct ath11k_htc_ep *ep,
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struct sk_buff *skb)
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{
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struct ath11k_htc_hdr *hdr;
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hdr = (struct ath11k_htc_hdr *)skb->data;
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memset(hdr, 0, sizeof(*hdr));
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hdr->htc_info = FIELD_PREP(HTC_HDR_ENDPOINTID, ep->eid) |
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FIELD_PREP(HTC_HDR_PAYLOADLEN,
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(skb->len - sizeof(*hdr)));
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if (ep->tx_credit_flow_enabled)
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hdr->htc_info |= FIELD_PREP(HTC_HDR_FLAGS,
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ATH11K_HTC_FLAG_NEED_CREDIT_UPDATE);
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spin_lock_bh(&ep->htc->tx_lock);
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hdr->ctrl_info = FIELD_PREP(HTC_HDR_CONTROLBYTES1, ep->seq_no++);
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spin_unlock_bh(&ep->htc->tx_lock);
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}
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int ath11k_htc_send(struct ath11k_htc *htc,
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enum ath11k_htc_ep_id eid,
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struct sk_buff *skb)
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{
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struct ath11k_htc_ep *ep = &htc->endpoint[eid];
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struct ath11k_skb_cb *skb_cb = ATH11K_SKB_CB(skb);
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struct device *dev = htc->ab->dev;
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struct ath11k_base *ab = htc->ab;
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int credits = 0;
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int ret;
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bool credit_flow_enabled = (ab->hw_params.credit_flow &&
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ep->tx_credit_flow_enabled);
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if (eid >= ATH11K_HTC_EP_COUNT) {
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ath11k_warn(ab, "Invalid endpoint id: %d\n", eid);
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return -ENOENT;
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}
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skb_push(skb, sizeof(struct ath11k_htc_hdr));
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if (credit_flow_enabled) {
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credits = DIV_ROUND_UP(skb->len, htc->target_credit_size);
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spin_lock_bh(&htc->tx_lock);
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if (ep->tx_credits < credits) {
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ath11k_dbg(ab, ATH11K_DBG_HTC,
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"htc insufficient credits ep %d required %d available %d\n",
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eid, credits, ep->tx_credits);
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spin_unlock_bh(&htc->tx_lock);
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ret = -EAGAIN;
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goto err_pull;
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}
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ep->tx_credits -= credits;
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ath11k_dbg(ab, ATH11K_DBG_HTC,
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"htc ep %d consumed %d credits (total %d)\n",
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eid, credits, ep->tx_credits);
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spin_unlock_bh(&htc->tx_lock);
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}
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ath11k_htc_prepare_tx_skb(ep, skb);
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skb_cb->eid = eid;
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skb_cb->paddr = dma_map_single(dev, skb->data, skb->len, DMA_TO_DEVICE);
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ret = dma_mapping_error(dev, skb_cb->paddr);
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if (ret) {
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ret = -EIO;
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goto err_credits;
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}
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ret = ath11k_ce_send(htc->ab, skb, ep->ul_pipe_id, ep->eid);
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if (ret)
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goto err_unmap;
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return 0;
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err_unmap:
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dma_unmap_single(dev, skb_cb->paddr, skb->len, DMA_TO_DEVICE);
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err_credits:
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if (credit_flow_enabled) {
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spin_lock_bh(&htc->tx_lock);
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ep->tx_credits += credits;
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ath11k_dbg(ab, ATH11K_DBG_HTC,
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"htc ep %d reverted %d credits back (total %d)\n",
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eid, credits, ep->tx_credits);
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spin_unlock_bh(&htc->tx_lock);
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if (ep->ep_ops.ep_tx_credits)
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ep->ep_ops.ep_tx_credits(htc->ab);
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}
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err_pull:
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skb_pull(skb, sizeof(struct ath11k_htc_hdr));
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return ret;
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}
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static void
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ath11k_htc_process_credit_report(struct ath11k_htc *htc,
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const struct ath11k_htc_credit_report *report,
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int len,
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enum ath11k_htc_ep_id eid)
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{
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struct ath11k_base *ab = htc->ab;
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struct ath11k_htc_ep *ep;
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int i, n_reports;
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if (len % sizeof(*report))
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ath11k_warn(ab, "Uneven credit report len %d", len);
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n_reports = len / sizeof(*report);
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spin_lock_bh(&htc->tx_lock);
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for (i = 0; i < n_reports; i++, report++) {
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if (report->eid >= ATH11K_HTC_EP_COUNT)
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break;
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ep = &htc->endpoint[report->eid];
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ep->tx_credits += report->credits;
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ath11k_dbg(ab, ATH11K_DBG_HTC, "htc ep %d got %d credits (total %d)\n",
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report->eid, report->credits, ep->tx_credits);
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if (ep->ep_ops.ep_tx_credits) {
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spin_unlock_bh(&htc->tx_lock);
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ep->ep_ops.ep_tx_credits(htc->ab);
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spin_lock_bh(&htc->tx_lock);
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}
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}
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spin_unlock_bh(&htc->tx_lock);
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}
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static int ath11k_htc_process_trailer(struct ath11k_htc *htc,
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u8 *buffer,
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int length,
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enum ath11k_htc_ep_id src_eid)
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{
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struct ath11k_base *ab = htc->ab;
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int status = 0;
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struct ath11k_htc_record *record;
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size_t len;
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while (length > 0) {
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record = (struct ath11k_htc_record *)buffer;
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if (length < sizeof(record->hdr)) {
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status = -EINVAL;
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break;
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}
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if (record->hdr.len > length) {
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/* no room left in buffer for record */
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ath11k_warn(ab, "Invalid record length: %d\n",
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record->hdr.len);
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status = -EINVAL;
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break;
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}
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if (ab->hw_params.credit_flow) {
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switch (record->hdr.id) {
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case ATH11K_HTC_RECORD_CREDITS:
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len = sizeof(struct ath11k_htc_credit_report);
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if (record->hdr.len < len) {
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ath11k_warn(ab, "Credit report too long\n");
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status = -EINVAL;
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break;
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}
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ath11k_htc_process_credit_report(htc,
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record->credit_report,
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record->hdr.len,
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src_eid);
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break;
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default:
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ath11k_warn(ab, "Unhandled record: id:%d length:%d\n",
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record->hdr.id, record->hdr.len);
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break;
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}
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}
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if (status)
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break;
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/* multiple records may be present in a trailer */
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buffer += sizeof(record->hdr) + record->hdr.len;
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length -= sizeof(record->hdr) + record->hdr.len;
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}
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return status;
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}
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static void ath11k_htc_suspend_complete(struct ath11k_base *ab, bool ack)
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{
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ath11k_dbg(ab, ATH11K_DBG_BOOT, "boot suspend complete %d\n", ack);
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if (ack)
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set_bit(ATH11K_FLAG_HTC_SUSPEND_COMPLETE, &ab->dev_flags);
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else
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clear_bit(ATH11K_FLAG_HTC_SUSPEND_COMPLETE, &ab->dev_flags);
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complete(&ab->htc_suspend);
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}
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void ath11k_htc_tx_completion_handler(struct ath11k_base *ab,
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struct sk_buff *skb)
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{
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struct ath11k_htc *htc = &ab->htc;
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struct ath11k_htc_ep *ep;
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void (*ep_tx_complete)(struct ath11k_base *, struct sk_buff *);
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u8 eid;
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eid = ATH11K_SKB_CB(skb)->eid;
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if (eid >= ATH11K_HTC_EP_COUNT)
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return;
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ep = &htc->endpoint[eid];
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spin_lock_bh(&htc->tx_lock);
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ep_tx_complete = ep->ep_ops.ep_tx_complete;
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spin_unlock_bh(&htc->tx_lock);
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if (!ep_tx_complete) {
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dev_kfree_skb_any(skb);
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return;
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}
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ep_tx_complete(htc->ab, skb);
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}
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void ath11k_htc_rx_completion_handler(struct ath11k_base *ab,
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struct sk_buff *skb)
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{
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int status = 0;
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struct ath11k_htc *htc = &ab->htc;
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struct ath11k_htc_hdr *hdr;
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struct ath11k_htc_ep *ep;
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u16 payload_len;
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u32 trailer_len = 0;
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size_t min_len;
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u8 eid;
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bool trailer_present;
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hdr = (struct ath11k_htc_hdr *)skb->data;
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skb_pull(skb, sizeof(*hdr));
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eid = FIELD_GET(HTC_HDR_ENDPOINTID, hdr->htc_info);
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if (eid >= ATH11K_HTC_EP_COUNT) {
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ath11k_warn(ab, "HTC Rx: invalid eid %d\n", eid);
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goto out;
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}
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ep = &htc->endpoint[eid];
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payload_len = FIELD_GET(HTC_HDR_PAYLOADLEN, hdr->htc_info);
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if (payload_len + sizeof(*hdr) > ATH11K_HTC_MAX_LEN) {
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ath11k_warn(ab, "HTC rx frame too long, len: %zu\n",
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payload_len + sizeof(*hdr));
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goto out;
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}
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if (skb->len < payload_len) {
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ath11k_warn(ab, "HTC Rx: insufficient length, got %d, expected %d\n",
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skb->len, payload_len);
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goto out;
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}
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/* get flags to check for trailer */
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trailer_present = (FIELD_GET(HTC_HDR_FLAGS, hdr->htc_info)) &
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ATH11K_HTC_FLAG_TRAILER_PRESENT;
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if (trailer_present) {
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u8 *trailer;
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trailer_len = FIELD_GET(HTC_HDR_CONTROLBYTES0, hdr->ctrl_info);
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min_len = sizeof(struct ath11k_htc_record_hdr);
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if ((trailer_len < min_len) ||
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(trailer_len > payload_len)) {
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ath11k_warn(ab, "Invalid trailer length: %d\n",
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trailer_len);
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goto out;
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}
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trailer = (u8 *)hdr;
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trailer += sizeof(*hdr);
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trailer += payload_len;
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trailer -= trailer_len;
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status = ath11k_htc_process_trailer(htc, trailer,
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trailer_len, eid);
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if (status)
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goto out;
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skb_trim(skb, skb->len - trailer_len);
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}
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if (trailer_len >= payload_len)
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/* zero length packet with trailer data, just drop these */
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goto out;
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if (eid == ATH11K_HTC_EP_0) {
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struct ath11k_htc_msg *msg = (struct ath11k_htc_msg *)skb->data;
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switch (FIELD_GET(HTC_MSG_MESSAGEID, msg->msg_svc_id)) {
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case ATH11K_HTC_MSG_READY_ID:
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case ATH11K_HTC_MSG_CONNECT_SERVICE_RESP_ID:
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/* handle HTC control message */
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if (completion_done(&htc->ctl_resp)) {
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/* this is a fatal error, target should not be
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* sending unsolicited messages on the ep 0
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*/
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ath11k_warn(ab, "HTC rx ctrl still processing\n");
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complete(&htc->ctl_resp);
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goto out;
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}
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htc->control_resp_len =
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min_t(int, skb->len,
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ATH11K_HTC_MAX_CTRL_MSG_LEN);
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memcpy(htc->control_resp_buffer, skb->data,
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htc->control_resp_len);
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complete(&htc->ctl_resp);
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break;
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case ATH11K_HTC_MSG_SEND_SUSPEND_COMPLETE:
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ath11k_htc_suspend_complete(ab, true);
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break;
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case ATH11K_HTC_MSG_NACK_SUSPEND:
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ath11k_htc_suspend_complete(ab, false);
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break;
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case ATH11K_HTC_MSG_WAKEUP_FROM_SUSPEND_ID:
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break;
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default:
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ath11k_warn(ab, "ignoring unsolicited htc ep0 event %ld\n",
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FIELD_GET(HTC_MSG_MESSAGEID, msg->msg_svc_id));
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break;
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}
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goto out;
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}
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ath11k_dbg(ab, ATH11K_DBG_HTC, "htc rx completion ep %d skb %pK\n",
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eid, skb);
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ep->ep_ops.ep_rx_complete(ab, skb);
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/* poll tx completion for interrupt disabled CE's */
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ath11k_ce_poll_send_completed(ab, ep->ul_pipe_id);
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/* skb is now owned by the rx completion handler */
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skb = NULL;
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out:
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kfree_skb(skb);
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}
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static void ath11k_htc_control_rx_complete(struct ath11k_base *ab,
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struct sk_buff *skb)
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{
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/* This is unexpected. FW is not supposed to send regular rx on this
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* endpoint.
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*/
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ath11k_warn(ab, "unexpected htc rx\n");
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kfree_skb(skb);
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}
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static const char *htc_service_name(enum ath11k_htc_svc_id id)
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{
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switch (id) {
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case ATH11K_HTC_SVC_ID_RESERVED:
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return "Reserved";
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case ATH11K_HTC_SVC_ID_RSVD_CTRL:
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return "Control";
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case ATH11K_HTC_SVC_ID_WMI_CONTROL:
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return "WMI";
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case ATH11K_HTC_SVC_ID_WMI_DATA_BE:
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return "DATA BE";
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case ATH11K_HTC_SVC_ID_WMI_DATA_BK:
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return "DATA BK";
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case ATH11K_HTC_SVC_ID_WMI_DATA_VI:
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return "DATA VI";
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case ATH11K_HTC_SVC_ID_WMI_DATA_VO:
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return "DATA VO";
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case ATH11K_HTC_SVC_ID_WMI_CONTROL_MAC1:
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return "WMI MAC1";
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case ATH11K_HTC_SVC_ID_WMI_CONTROL_MAC2:
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return "WMI MAC2";
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case ATH11K_HTC_SVC_ID_NMI_CONTROL:
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return "NMI Control";
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case ATH11K_HTC_SVC_ID_NMI_DATA:
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return "NMI Data";
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case ATH11K_HTC_SVC_ID_HTT_DATA_MSG:
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return "HTT Data";
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case ATH11K_HTC_SVC_ID_TEST_RAW_STREAMS:
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return "RAW";
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case ATH11K_HTC_SVC_ID_IPA_TX:
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return "IPA TX";
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case ATH11K_HTC_SVC_ID_PKT_LOG:
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return "PKT LOG";
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}
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|
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return "Unknown";
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}
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|
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static void ath11k_htc_reset_endpoint_states(struct ath11k_htc *htc)
|
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{
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struct ath11k_htc_ep *ep;
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int i;
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for (i = ATH11K_HTC_EP_0; i < ATH11K_HTC_EP_COUNT; i++) {
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ep = &htc->endpoint[i];
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ep->service_id = ATH11K_HTC_SVC_ID_UNUSED;
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ep->max_ep_message_len = 0;
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ep->max_tx_queue_depth = 0;
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ep->eid = i;
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ep->htc = htc;
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ep->tx_credit_flow_enabled = true;
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}
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}
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|
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static u8 ath11k_htc_get_credit_allocation(struct ath11k_htc *htc,
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u16 service_id)
|
|
{
|
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u8 i, allocation = 0;
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|
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for (i = 0; i < ATH11K_HTC_MAX_SERVICE_ALLOC_ENTRIES; i++) {
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if (htc->service_alloc_table[i].service_id == service_id) {
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allocation =
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htc->service_alloc_table[i].credit_allocation;
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}
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}
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|
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return allocation;
|
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}
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|
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static int ath11k_htc_setup_target_buffer_assignments(struct ath11k_htc *htc)
|
|
{
|
|
struct ath11k_htc_svc_tx_credits *serv_entry;
|
|
u32 svc_id[] = {
|
|
ATH11K_HTC_SVC_ID_WMI_CONTROL,
|
|
ATH11K_HTC_SVC_ID_WMI_CONTROL_MAC1,
|
|
ATH11K_HTC_SVC_ID_WMI_CONTROL_MAC2,
|
|
};
|
|
int i, credits;
|
|
|
|
credits = htc->total_transmit_credits;
|
|
serv_entry = htc->service_alloc_table;
|
|
|
|
if ((htc->wmi_ep_count == 0) ||
|
|
(htc->wmi_ep_count > ARRAY_SIZE(svc_id)))
|
|
return -EINVAL;
|
|
|
|
/* Divide credits among number of endpoints for WMI */
|
|
credits = credits / htc->wmi_ep_count;
|
|
for (i = 0; i < htc->wmi_ep_count; i++) {
|
|
serv_entry[i].service_id = svc_id[i];
|
|
serv_entry[i].credit_allocation = credits;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ath11k_htc_wait_target(struct ath11k_htc *htc)
|
|
{
|
|
int i, status = 0;
|
|
struct ath11k_base *ab = htc->ab;
|
|
unsigned long time_left;
|
|
struct ath11k_htc_ready *ready;
|
|
u16 message_id;
|
|
u16 credit_count;
|
|
u16 credit_size;
|
|
|
|
time_left = wait_for_completion_timeout(&htc->ctl_resp,
|
|
ATH11K_HTC_WAIT_TIMEOUT_HZ);
|
|
if (!time_left) {
|
|
ath11k_warn(ab, "failed to receive control response completion, polling..\n");
|
|
|
|
for (i = 0; i < ab->hw_params.ce_count; i++)
|
|
ath11k_ce_per_engine_service(htc->ab, i);
|
|
|
|
time_left =
|
|
wait_for_completion_timeout(&htc->ctl_resp,
|
|
ATH11K_HTC_WAIT_TIMEOUT_HZ);
|
|
|
|
if (!time_left)
|
|
status = -ETIMEDOUT;
|
|
}
|
|
|
|
if (status < 0) {
|
|
ath11k_warn(ab, "ctl_resp never came in (%d)\n", status);
|
|
return status;
|
|
}
|
|
|
|
if (htc->control_resp_len < sizeof(*ready)) {
|
|
ath11k_warn(ab, "Invalid HTC ready msg len:%d\n",
|
|
htc->control_resp_len);
|
|
return -ECOMM;
|
|
}
|
|
|
|
ready = (struct ath11k_htc_ready *)htc->control_resp_buffer;
|
|
message_id = FIELD_GET(HTC_MSG_MESSAGEID, ready->id_credit_count);
|
|
credit_count = FIELD_GET(HTC_READY_MSG_CREDITCOUNT,
|
|
ready->id_credit_count);
|
|
credit_size = FIELD_GET(HTC_READY_MSG_CREDITSIZE, ready->size_ep);
|
|
|
|
if (message_id != ATH11K_HTC_MSG_READY_ID) {
|
|
ath11k_warn(ab, "Invalid HTC ready msg: 0x%x\n", message_id);
|
|
return -ECOMM;
|
|
}
|
|
|
|
htc->total_transmit_credits = credit_count;
|
|
htc->target_credit_size = credit_size;
|
|
|
|
ath11k_dbg(ab, ATH11K_DBG_HTC,
|
|
"Target ready! transmit resources: %d size:%d\n",
|
|
htc->total_transmit_credits, htc->target_credit_size);
|
|
|
|
if ((htc->total_transmit_credits == 0) ||
|
|
(htc->target_credit_size == 0)) {
|
|
ath11k_warn(ab, "Invalid credit size received\n");
|
|
return -ECOMM;
|
|
}
|
|
|
|
/* For QCA6390, wmi endpoint uses 1 credit to avoid
|
|
* back-to-back write.
|
|
*/
|
|
if (ab->hw_params.supports_shadow_regs)
|
|
htc->total_transmit_credits = 1;
|
|
|
|
ath11k_htc_setup_target_buffer_assignments(htc);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ath11k_htc_connect_service(struct ath11k_htc *htc,
|
|
struct ath11k_htc_svc_conn_req *conn_req,
|
|
struct ath11k_htc_svc_conn_resp *conn_resp)
|
|
{
|
|
struct ath11k_base *ab = htc->ab;
|
|
struct ath11k_htc_conn_svc *req_msg;
|
|
struct ath11k_htc_conn_svc_resp resp_msg_dummy;
|
|
struct ath11k_htc_conn_svc_resp *resp_msg = &resp_msg_dummy;
|
|
enum ath11k_htc_ep_id assigned_eid = ATH11K_HTC_EP_COUNT;
|
|
struct ath11k_htc_ep *ep;
|
|
struct sk_buff *skb;
|
|
unsigned int max_msg_size = 0;
|
|
int length, status;
|
|
unsigned long time_left;
|
|
bool disable_credit_flow_ctrl = false;
|
|
u16 message_id, service_id, flags = 0;
|
|
u8 tx_alloc = 0;
|
|
|
|
/* special case for HTC pseudo control service */
|
|
if (conn_req->service_id == ATH11K_HTC_SVC_ID_RSVD_CTRL) {
|
|
disable_credit_flow_ctrl = true;
|
|
assigned_eid = ATH11K_HTC_EP_0;
|
|
max_msg_size = ATH11K_HTC_MAX_CTRL_MSG_LEN;
|
|
memset(&resp_msg_dummy, 0, sizeof(resp_msg_dummy));
|
|
goto setup;
|
|
}
|
|
|
|
tx_alloc = ath11k_htc_get_credit_allocation(htc,
|
|
conn_req->service_id);
|
|
if (!tx_alloc)
|
|
ath11k_dbg(ab, ATH11K_DBG_BOOT,
|
|
"boot htc service %s does not allocate target credits\n",
|
|
htc_service_name(conn_req->service_id));
|
|
|
|
skb = ath11k_htc_build_tx_ctrl_skb(htc->ab);
|
|
if (!skb) {
|
|
ath11k_warn(ab, "Failed to allocate HTC packet\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
length = sizeof(*req_msg);
|
|
skb_put(skb, length);
|
|
memset(skb->data, 0, length);
|
|
|
|
req_msg = (struct ath11k_htc_conn_svc *)skb->data;
|
|
req_msg->msg_svc_id = FIELD_PREP(HTC_MSG_MESSAGEID,
|
|
ATH11K_HTC_MSG_CONNECT_SERVICE_ID);
|
|
|
|
flags |= FIELD_PREP(ATH11K_HTC_CONN_FLAGS_RECV_ALLOC, tx_alloc);
|
|
|
|
/* Only enable credit flow control for WMI ctrl service */
|
|
if (!(conn_req->service_id == ATH11K_HTC_SVC_ID_WMI_CONTROL ||
|
|
conn_req->service_id == ATH11K_HTC_SVC_ID_WMI_CONTROL_MAC1 ||
|
|
conn_req->service_id == ATH11K_HTC_SVC_ID_WMI_CONTROL_MAC2)) {
|
|
flags |= ATH11K_HTC_CONN_FLAGS_DISABLE_CREDIT_FLOW_CTRL;
|
|
disable_credit_flow_ctrl = true;
|
|
}
|
|
|
|
if (!ab->hw_params.credit_flow) {
|
|
flags |= ATH11K_HTC_CONN_FLAGS_DISABLE_CREDIT_FLOW_CTRL;
|
|
disable_credit_flow_ctrl = true;
|
|
}
|
|
|
|
req_msg->flags_len = FIELD_PREP(HTC_SVC_MSG_CONNECTIONFLAGS, flags);
|
|
req_msg->msg_svc_id |= FIELD_PREP(HTC_SVC_MSG_SERVICE_ID,
|
|
conn_req->service_id);
|
|
|
|
reinit_completion(&htc->ctl_resp);
|
|
|
|
status = ath11k_htc_send(htc, ATH11K_HTC_EP_0, skb);
|
|
if (status) {
|
|
kfree_skb(skb);
|
|
return status;
|
|
}
|
|
|
|
/* wait for response */
|
|
time_left = wait_for_completion_timeout(&htc->ctl_resp,
|
|
ATH11K_HTC_CONN_SVC_TIMEOUT_HZ);
|
|
if (!time_left) {
|
|
ath11k_err(ab, "Service connect timeout\n");
|
|
return -ETIMEDOUT;
|
|
}
|
|
|
|
/* we controlled the buffer creation, it's aligned */
|
|
resp_msg = (struct ath11k_htc_conn_svc_resp *)htc->control_resp_buffer;
|
|
message_id = FIELD_GET(HTC_MSG_MESSAGEID, resp_msg->msg_svc_id);
|
|
service_id = FIELD_GET(HTC_SVC_RESP_MSG_SERVICEID,
|
|
resp_msg->msg_svc_id);
|
|
|
|
if ((message_id != ATH11K_HTC_MSG_CONNECT_SERVICE_RESP_ID) ||
|
|
(htc->control_resp_len < sizeof(*resp_msg))) {
|
|
ath11k_err(ab, "Invalid resp message ID 0x%x", message_id);
|
|
return -EPROTO;
|
|
}
|
|
|
|
ath11k_dbg(ab, ATH11K_DBG_HTC,
|
|
"HTC Service %s connect response: status: 0x%lx, assigned ep: 0x%lx\n",
|
|
htc_service_name(service_id),
|
|
FIELD_GET(HTC_SVC_RESP_MSG_STATUS, resp_msg->flags_len),
|
|
FIELD_GET(HTC_SVC_RESP_MSG_ENDPOINTID, resp_msg->flags_len));
|
|
|
|
conn_resp->connect_resp_code = FIELD_GET(HTC_SVC_RESP_MSG_STATUS,
|
|
resp_msg->flags_len);
|
|
|
|
/* check response status */
|
|
if (conn_resp->connect_resp_code != ATH11K_HTC_CONN_SVC_STATUS_SUCCESS) {
|
|
ath11k_err(ab, "HTC Service %s connect request failed: 0x%x)\n",
|
|
htc_service_name(service_id),
|
|
conn_resp->connect_resp_code);
|
|
return -EPROTO;
|
|
}
|
|
|
|
assigned_eid = (enum ath11k_htc_ep_id)FIELD_GET(
|
|
HTC_SVC_RESP_MSG_ENDPOINTID,
|
|
resp_msg->flags_len);
|
|
|
|
max_msg_size = FIELD_GET(HTC_SVC_RESP_MSG_MAXMSGSIZE,
|
|
resp_msg->flags_len);
|
|
|
|
setup:
|
|
|
|
if (assigned_eid >= ATH11K_HTC_EP_COUNT)
|
|
return -EPROTO;
|
|
|
|
if (max_msg_size == 0)
|
|
return -EPROTO;
|
|
|
|
ep = &htc->endpoint[assigned_eid];
|
|
ep->eid = assigned_eid;
|
|
|
|
if (ep->service_id != ATH11K_HTC_SVC_ID_UNUSED)
|
|
return -EPROTO;
|
|
|
|
/* return assigned endpoint to caller */
|
|
conn_resp->eid = assigned_eid;
|
|
conn_resp->max_msg_len = FIELD_GET(HTC_SVC_RESP_MSG_MAXMSGSIZE,
|
|
resp_msg->flags_len);
|
|
|
|
/* setup the endpoint */
|
|
ep->service_id = conn_req->service_id;
|
|
ep->max_tx_queue_depth = conn_req->max_send_queue_depth;
|
|
ep->max_ep_message_len = FIELD_GET(HTC_SVC_RESP_MSG_MAXMSGSIZE,
|
|
resp_msg->flags_len);
|
|
ep->tx_credits = tx_alloc;
|
|
|
|
/* copy all the callbacks */
|
|
ep->ep_ops = conn_req->ep_ops;
|
|
|
|
status = ath11k_hif_map_service_to_pipe(htc->ab,
|
|
ep->service_id,
|
|
&ep->ul_pipe_id,
|
|
&ep->dl_pipe_id);
|
|
if (status)
|
|
return status;
|
|
|
|
ath11k_dbg(ab, ATH11K_DBG_BOOT,
|
|
"boot htc service '%s' ul pipe %d dl pipe %d eid %d ready\n",
|
|
htc_service_name(ep->service_id), ep->ul_pipe_id,
|
|
ep->dl_pipe_id, ep->eid);
|
|
|
|
if (disable_credit_flow_ctrl && ep->tx_credit_flow_enabled) {
|
|
ep->tx_credit_flow_enabled = false;
|
|
ath11k_dbg(ab, ATH11K_DBG_BOOT,
|
|
"boot htc service '%s' eid %d TX flow control disabled\n",
|
|
htc_service_name(ep->service_id), assigned_eid);
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
int ath11k_htc_start(struct ath11k_htc *htc)
|
|
{
|
|
struct sk_buff *skb;
|
|
int status = 0;
|
|
struct ath11k_base *ab = htc->ab;
|
|
struct ath11k_htc_setup_complete_extended *msg;
|
|
|
|
skb = ath11k_htc_build_tx_ctrl_skb(htc->ab);
|
|
if (!skb)
|
|
return -ENOMEM;
|
|
|
|
skb_put(skb, sizeof(*msg));
|
|
memset(skb->data, 0, skb->len);
|
|
|
|
msg = (struct ath11k_htc_setup_complete_extended *)skb->data;
|
|
msg->msg_id = FIELD_PREP(HTC_MSG_MESSAGEID,
|
|
ATH11K_HTC_MSG_SETUP_COMPLETE_EX_ID);
|
|
|
|
if (ab->hw_params.credit_flow)
|
|
ath11k_dbg(ab, ATH11K_DBG_HTC, "HTC is using TX credit flow control\n");
|
|
else
|
|
msg->flags |= ATH11K_GLOBAL_DISABLE_CREDIT_FLOW;
|
|
|
|
status = ath11k_htc_send(htc, ATH11K_HTC_EP_0, skb);
|
|
if (status) {
|
|
kfree_skb(skb);
|
|
return status;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ath11k_htc_init(struct ath11k_base *ab)
|
|
{
|
|
struct ath11k_htc *htc = &ab->htc;
|
|
struct ath11k_htc_svc_conn_req conn_req;
|
|
struct ath11k_htc_svc_conn_resp conn_resp;
|
|
int ret;
|
|
|
|
spin_lock_init(&htc->tx_lock);
|
|
|
|
ath11k_htc_reset_endpoint_states(htc);
|
|
|
|
htc->ab = ab;
|
|
|
|
switch (ab->wmi_ab.preferred_hw_mode) {
|
|
case WMI_HOST_HW_MODE_SINGLE:
|
|
htc->wmi_ep_count = 1;
|
|
break;
|
|
case WMI_HOST_HW_MODE_DBS:
|
|
case WMI_HOST_HW_MODE_DBS_OR_SBS:
|
|
htc->wmi_ep_count = 2;
|
|
break;
|
|
case WMI_HOST_HW_MODE_DBS_SBS:
|
|
htc->wmi_ep_count = 3;
|
|
break;
|
|
default:
|
|
htc->wmi_ep_count = ab->hw_params.max_radios;
|
|
break;
|
|
}
|
|
|
|
/* setup our pseudo HTC control endpoint connection */
|
|
memset(&conn_req, 0, sizeof(conn_req));
|
|
memset(&conn_resp, 0, sizeof(conn_resp));
|
|
conn_req.ep_ops.ep_tx_complete = ath11k_htc_control_tx_complete;
|
|
conn_req.ep_ops.ep_rx_complete = ath11k_htc_control_rx_complete;
|
|
conn_req.max_send_queue_depth = ATH11K_NUM_CONTROL_TX_BUFFERS;
|
|
conn_req.service_id = ATH11K_HTC_SVC_ID_RSVD_CTRL;
|
|
|
|
/* connect fake service */
|
|
ret = ath11k_htc_connect_service(htc, &conn_req, &conn_resp);
|
|
if (ret) {
|
|
ath11k_err(ab, "could not connect to htc service (%d)\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
init_completion(&htc->ctl_resp);
|
|
|
|
return 0;
|
|
}
|