116 lines
3.0 KiB
C
116 lines
3.0 KiB
C
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/*
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* Copyright (c) 2005-2011 Atheros Communications Inc.
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* Copyright (c) 2011-2013 Qualcomm Atheros, Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <linux/slab.h>
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#include <linux/if_ether.h>
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#include "htt.h"
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#include "core.h"
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#include "debug.h"
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int ath10k_htt_connect(struct ath10k_htt *htt)
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{
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struct ath10k_htc_svc_conn_req conn_req;
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struct ath10k_htc_svc_conn_resp conn_resp;
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int status;
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memset(&conn_req, 0, sizeof(conn_req));
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memset(&conn_resp, 0, sizeof(conn_resp));
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conn_req.ep_ops.ep_tx_complete = ath10k_htt_htc_tx_complete;
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conn_req.ep_ops.ep_rx_complete = ath10k_htt_t2h_msg_handler;
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/* connect to control service */
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conn_req.service_id = ATH10K_HTC_SVC_ID_HTT_DATA_MSG;
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status = ath10k_htc_connect_service(&htt->ar->htc, &conn_req,
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&conn_resp);
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if (status)
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return status;
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htt->eid = conn_resp.eid;
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return 0;
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}
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int ath10k_htt_init(struct ath10k *ar)
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{
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struct ath10k_htt *htt = &ar->htt;
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htt->ar = ar;
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htt->max_throughput_mbps = 800;
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/*
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* Prefetch enough data to satisfy target
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* classification engine.
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* This is for LL chips. HL chips will probably
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* transfer all frame in the tx fragment.
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*/
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htt->prefetch_len =
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36 + /* 802.11 + qos + ht */
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4 + /* 802.1q */
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8 + /* llc snap */
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2; /* ip4 dscp or ip6 priority */
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return 0;
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}
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#define HTT_TARGET_VERSION_TIMEOUT_HZ (3*HZ)
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static int ath10k_htt_verify_version(struct ath10k_htt *htt)
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{
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struct ath10k *ar = htt->ar;
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ath10k_dbg(ar, ATH10K_DBG_BOOT, "htt target version %d.%d\n",
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htt->target_version_major, htt->target_version_minor);
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if (htt->target_version_major != 2 &&
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htt->target_version_major != 3) {
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ath10k_err(ar, "unsupported htt major version %d. supported versions are 2 and 3\n",
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htt->target_version_major);
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return -ENOTSUPP;
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}
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return 0;
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}
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int ath10k_htt_setup(struct ath10k_htt *htt)
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{
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struct ath10k *ar = htt->ar;
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int status;
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init_completion(&htt->target_version_received);
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status = ath10k_htt_h2t_ver_req_msg(htt);
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if (status)
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return status;
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status = wait_for_completion_timeout(&htt->target_version_received,
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HTT_TARGET_VERSION_TIMEOUT_HZ);
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if (status <= 0) {
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ath10k_warn(ar, "htt version request timed out\n");
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return -ETIMEDOUT;
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}
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status = ath10k_htt_verify_version(htt);
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if (status)
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return status;
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return ath10k_htt_send_rx_ring_cfg_ll(htt);
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}
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