Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / net / wireless / ath / ath10k / htt.c

diff --git a/kernel/drivers/net/wireless/ath/ath10k/htt.c b/kernel/drivers/net/wireless/ath/ath10k/htt.c
new file mode 100644 (file)
index 0000000..4f59ab9
--- /dev/null
+++ b/kernel/drivers/net/wireless/ath/ath10k/htt.c
@@ -0,0 +1,114 @@
+/*
+ * Copyright (c) 2005-2011 Atheros Communications Inc.
+ * Copyright (c) 2011-2013 Qualcomm Atheros, Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <linux/slab.h>
+#include <linux/if_ether.h>
+
+#include "htt.h"
+#include "core.h"
+#include "debug.h"
+
+int ath10k_htt_connect(struct ath10k_htt *htt)
+{
+       struct ath10k_htc_svc_conn_req conn_req;
+       struct ath10k_htc_svc_conn_resp conn_resp;
+       int status;
+
+       memset(&conn_req, 0, sizeof(conn_req));
+       memset(&conn_resp, 0, sizeof(conn_resp));
+
+       conn_req.ep_ops.ep_tx_complete = ath10k_htt_htc_tx_complete;
+       conn_req.ep_ops.ep_rx_complete = ath10k_htt_t2h_msg_handler;
+
+       /* connect to control service */
+       conn_req.service_id = ATH10K_HTC_SVC_ID_HTT_DATA_MSG;
+
+       status = ath10k_htc_connect_service(&htt->ar->htc, &conn_req,
+                                           &conn_resp);
+
+       if (status)
+               return status;
+
+       htt->eid = conn_resp.eid;
+
+       return 0;
+}
+
+int ath10k_htt_init(struct ath10k *ar)
+{
+       struct ath10k_htt *htt = &ar->htt;
+
+       htt->ar = ar;
+
+       /*
+        * Prefetch enough data to satisfy target
+        * classification engine.
+        * This is for LL chips. HL chips will probably
+        * transfer all frame in the tx fragment.
+        */
+       htt->prefetch_len =
+               36 + /* 802.11 + qos + ht */
+               4 + /* 802.1q */
+               8 + /* llc snap */
+               2; /* ip4 dscp or ip6 priority */
+
+       return 0;
+}
+
+#define HTT_TARGET_VERSION_TIMEOUT_HZ (3*HZ)
+
+static int ath10k_htt_verify_version(struct ath10k_htt *htt)
+{
+       struct ath10k *ar = htt->ar;
+
+       ath10k_dbg(ar, ATH10K_DBG_BOOT, "htt target version %d.%d\n",
+                  htt->target_version_major, htt->target_version_minor);
+
+       if (htt->target_version_major != 2 &&
+           htt->target_version_major != 3) {
+               ath10k_err(ar, "unsupported htt major version %d. supported versions are 2 and 3\n",
+                          htt->target_version_major);
+               return -ENOTSUPP;
+       }
+
+       return 0;
+}
+
+int ath10k_htt_setup(struct ath10k_htt *htt)
+{
+       struct ath10k *ar = htt->ar;
+       int status;
+
+       init_completion(&htt->target_version_received);
+
+       status = ath10k_htt_h2t_ver_req_msg(htt);
+       if (status)
+               return status;
+
+       status = wait_for_completion_timeout(&htt->target_version_received,
+                                            HTT_TARGET_VERSION_TIMEOUT_HZ);
+       if (status == 0) {
+               ath10k_warn(ar, "htt version request timed out\n");
+               return -ETIMEDOUT;
+       }
+
+       status = ath10k_htt_verify_version(htt);
+       if (status)
+               return status;
+
+       return ath10k_htt_send_rx_ring_cfg_ll(htt);
+}