Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Janusz Dziedzic | 3515 | 99.55% | 1 | 33.33% |
Baochen Qiang | 14 | 0.40% | 1 | 33.33% |
Jeff Johnson | 2 | 0.06% | 1 | 33.33% |
Total | 3531 | 3 |
// SPDX-License-Identifier: BSD-3-Clause-Clear /* * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved. * Copyright (c) 2021-2022, 2024 Qualcomm Innovation Center, Inc. All rights reserved. */ #include <linux/skbuff.h> #include <linux/ctype.h> #include "debug.h" #include "hif.h" struct sk_buff *ath12k_htc_alloc_skb(struct ath12k_base *ab, int size) { struct sk_buff *skb; skb = dev_alloc_skb(size + sizeof(struct ath12k_htc_hdr)); if (!skb) return NULL; skb_reserve(skb, sizeof(struct ath12k_htc_hdr)); /* FW/HTC requires 4-byte aligned streams */ if (!IS_ALIGNED((unsigned long)skb->data, 4)) ath12k_warn(ab, "Unaligned HTC tx skb\n"); return skb; } static void ath12k_htc_control_tx_complete(struct ath12k_base *ab, struct sk_buff *skb) { kfree_skb(skb); } static struct sk_buff *ath12k_htc_build_tx_ctrl_skb(void) { struct sk_buff *skb; struct ath12k_skb_cb *skb_cb; skb = dev_alloc_skb(ATH12K_HTC_CONTROL_BUFFER_SIZE); if (!skb) return NULL; skb_reserve(skb, sizeof(struct ath12k_htc_hdr)); WARN_ON_ONCE(!IS_ALIGNED((unsigned long)skb->data, 4)); skb_cb = ATH12K_SKB_CB(skb); memset(skb_cb, 0, sizeof(*skb_cb)); return skb; } static void ath12k_htc_prepare_tx_skb(struct ath12k_htc_ep *ep, struct sk_buff *skb) { struct ath12k_htc_hdr *hdr; hdr = (struct ath12k_htc_hdr *)skb->data; memset(hdr, 0, sizeof(*hdr)); hdr->htc_info = le32_encode_bits(ep->eid, HTC_HDR_ENDPOINTID) | le32_encode_bits((skb->len - sizeof(*hdr)), HTC_HDR_PAYLOADLEN); if (ep->tx_credit_flow_enabled) hdr->htc_info |= le32_encode_bits(ATH12K_HTC_FLAG_NEED_CREDIT_UPDATE, HTC_HDR_FLAGS); spin_lock_bh(&ep->htc->tx_lock); hdr->ctrl_info = le32_encode_bits(ep->seq_no++, HTC_HDR_CONTROLBYTES1); spin_unlock_bh(&ep->htc->tx_lock); } int ath12k_htc_send(struct ath12k_htc *htc, enum ath12k_htc_ep_id eid, struct sk_buff *skb) { struct ath12k_htc_ep *ep = &htc->endpoint[eid]; struct ath12k_skb_cb *skb_cb = ATH12K_SKB_CB(skb); struct device *dev = htc->ab->dev; struct ath12k_base *ab = htc->ab; int credits = 0; int ret; if (eid >= ATH12K_HTC_EP_COUNT) { ath12k_warn(ab, "Invalid endpoint id: %d\n", eid); return -ENOENT; } skb_push(skb, sizeof(struct ath12k_htc_hdr)); if (ep->tx_credit_flow_enabled) { credits = DIV_ROUND_UP(skb->len, htc->target_credit_size); spin_lock_bh(&htc->tx_lock); if (ep->tx_credits < credits) { ath12k_dbg(ab, ATH12K_DBG_HTC, "htc insufficient credits ep %d required %d available %d\n", eid, credits, ep->tx_credits); spin_unlock_bh(&htc->tx_lock); ret = -EAGAIN; goto err_pull; } ep->tx_credits -= credits; ath12k_dbg(ab, ATH12K_DBG_HTC, "htc ep %d consumed %d credits (total %d)\n", eid, credits, ep->tx_credits); spin_unlock_bh(&htc->tx_lock); } ath12k_htc_prepare_tx_skb(ep, skb); skb_cb->paddr = dma_map_single(dev, skb->data, skb->len, DMA_TO_DEVICE); ret = dma_mapping_error(dev, skb_cb->paddr); if (ret) { ret = -EIO; goto err_credits; } ret = ath12k_ce_send(htc->ab, skb, ep->ul_pipe_id, ep->eid); if (ret) goto err_unmap; return 0; err_unmap: dma_unmap_single(dev, skb_cb->paddr, skb->len, DMA_TO_DEVICE); err_credits: if (ep->tx_credit_flow_enabled) { spin_lock_bh(&htc->tx_lock); ep->tx_credits += credits; ath12k_dbg(ab, ATH12K_DBG_HTC, "htc ep %d reverted %d credits back (total %d)\n", eid, credits, ep->tx_credits); spin_unlock_bh(&htc->tx_lock); if (ep->ep_ops.ep_tx_credits) ep->ep_ops.ep_tx_credits(htc->ab); } err_pull: skb_pull(skb, sizeof(struct ath12k_htc_hdr)); return ret; } static void ath12k_htc_process_credit_report(struct ath12k_htc *htc, const struct ath12k_htc_credit_report *report, int len, enum ath12k_htc_ep_id eid) { struct ath12k_base *ab = htc->ab; struct ath12k_htc_ep *ep; int i, n_reports; if (len % sizeof(*report)) ath12k_warn(ab, "Uneven credit report len %d", len); n_reports = len / sizeof(*report); spin_lock_bh(&htc->tx_lock); for (i = 0; i < n_reports; i++, report++) { if (report->eid >= ATH12K_HTC_EP_COUNT) break; ep = &htc->endpoint[report->eid]; ep->tx_credits += report->credits; ath12k_dbg(ab, ATH12K_DBG_HTC, "htc ep %d got %d credits (total %d)\n", report->eid, report->credits, ep->tx_credits); if (ep->ep_ops.ep_tx_credits) { spin_unlock_bh(&htc->tx_lock); ep->ep_ops.ep_tx_credits(htc->ab); spin_lock_bh(&htc->tx_lock); } } spin_unlock_bh(&htc->tx_lock); } static int ath12k_htc_process_trailer(struct ath12k_htc *htc, u8 *buffer, int length, enum ath12k_htc_ep_id src_eid) { struct ath12k_base *ab = htc->ab; int status = 0; struct ath12k_htc_record *record; size_t len; while (length > 0) { record = (struct ath12k_htc_record *)buffer; if (length < sizeof(record->hdr)) { status = -EINVAL; break; } if (record->hdr.len > length) { /* no room left in buffer for record */ ath12k_warn(ab, "Invalid record length: %d\n", record->hdr.len); status = -EINVAL; break; } switch (record->hdr.id) { case ATH12K_HTC_RECORD_CREDITS: len = sizeof(struct ath12k_htc_credit_report); if (record->hdr.len < len) { ath12k_warn(ab, "Credit report too long\n"); status = -EINVAL; break; } ath12k_htc_process_credit_report(htc, record->credit_report, record->hdr.len, src_eid); break; default: ath12k_warn(ab, "Unhandled record: id:%d length:%d\n", record->hdr.id, record->hdr.len); break; } if (status) break; /* multiple records may be present in a trailer */ buffer += sizeof(record->hdr) + record->hdr.len; length -= sizeof(record->hdr) + record->hdr.len; } return status; } static void ath12k_htc_suspend_complete(struct ath12k_base *ab, bool ack) { ath12k_dbg(ab, ATH12K_DBG_BOOT, "boot suspend complete %d\n", ack); if (ack) set_bit(ATH12K_FLAG_HTC_SUSPEND_COMPLETE, &ab->dev_flags); else clear_bit(ATH12K_FLAG_HTC_SUSPEND_COMPLETE, &ab->dev_flags); complete(&ab->htc_suspend); } static void ath12k_htc_wakeup_from_suspend(struct ath12k_base *ab) { ath12k_dbg(ab, ATH12K_DBG_BOOT, "boot wakeup from suspend is received\n"); } void ath12k_htc_rx_completion_handler(struct ath12k_base *ab, struct sk_buff *skb) { int status = 0; struct ath12k_htc *htc = &ab->htc; struct ath12k_htc_hdr *hdr; struct ath12k_htc_ep *ep; u16 payload_len; u32 trailer_len = 0; size_t min_len; u8 eid; bool trailer_present; hdr = (struct ath12k_htc_hdr *)skb->data; skb_pull(skb, sizeof(*hdr)); eid = le32_get_bits(hdr->htc_info, HTC_HDR_ENDPOINTID); if (eid >= ATH12K_HTC_EP_COUNT) { ath12k_warn(ab, "HTC Rx: invalid eid %d\n", eid); goto out; } ep = &htc->endpoint[eid]; payload_len = le32_get_bits(hdr->htc_info, HTC_HDR_PAYLOADLEN); if (payload_len + sizeof(*hdr) > ATH12K_HTC_MAX_LEN) { ath12k_warn(ab, "HTC rx frame too long, len: %zu\n", payload_len + sizeof(*hdr)); goto out; } if (skb->len < payload_len) { ath12k_warn(ab, "HTC Rx: insufficient length, got %d, expected %d\n", skb->len, payload_len); goto out; } /* get flags to check for trailer */ trailer_present = le32_get_bits(hdr->htc_info, HTC_HDR_FLAGS) & ATH12K_HTC_FLAG_TRAILER_PRESENT; if (trailer_present) { u8 *trailer; trailer_len = le32_get_bits(hdr->ctrl_info, HTC_HDR_CONTROLBYTES0); min_len = sizeof(struct ath12k_htc_record_hdr); if ((trailer_len < min_len) || (trailer_len > payload_len)) { ath12k_warn(ab, "Invalid trailer length: %d\n", trailer_len); goto out; } trailer = (u8 *)hdr; trailer += sizeof(*hdr); trailer += payload_len; trailer -= trailer_len; status = ath12k_htc_process_trailer(htc, trailer, trailer_len, eid); if (status) goto out; skb_trim(skb, skb->len - trailer_len); } if (trailer_len >= payload_len) /* zero length packet with trailer data, just drop these */ goto out; if (eid == ATH12K_HTC_EP_0) { struct ath12k_htc_msg *msg = (struct ath12k_htc_msg *)skb->data; switch (le32_get_bits(msg->msg_svc_id, HTC_MSG_MESSAGEID)) { case ATH12K_HTC_MSG_READY_ID: case ATH12K_HTC_MSG_CONNECT_SERVICE_RESP_ID: /* handle HTC control message */ if (completion_done(&htc->ctl_resp)) { /* this is a fatal error, target should not be * sending unsolicited messages on the ep 0 */ ath12k_warn(ab, "HTC rx ctrl still processing\n"); complete(&htc->ctl_resp); goto out; } htc->control_resp_len = min_t(int, skb->len, ATH12K_HTC_MAX_CTRL_MSG_LEN); memcpy(htc->control_resp_buffer, skb->data, htc->control_resp_len); complete(&htc->ctl_resp); break; case ATH12K_HTC_MSG_SEND_SUSPEND_COMPLETE: ath12k_htc_suspend_complete(ab, true); break; case ATH12K_HTC_MSG_NACK_SUSPEND: ath12k_htc_suspend_complete(ab, false); break; case ATH12K_HTC_MSG_WAKEUP_FROM_SUSPEND_ID: ath12k_htc_wakeup_from_suspend(ab); break; default: ath12k_warn(ab, "ignoring unsolicited htc ep0 event %u\n", le32_get_bits(msg->msg_svc_id, HTC_MSG_MESSAGEID)); break; } goto out; } ath12k_dbg(ab, ATH12K_DBG_HTC, "htc rx completion ep %d skb %p\n", eid, skb); ep->ep_ops.ep_rx_complete(ab, skb); /* poll tx completion for interrupt disabled CE's */ ath12k_ce_poll_send_completed(ab, ep->ul_pipe_id); /* skb is now owned by the rx completion handler */ skb = NULL; out: kfree_skb(skb); } static void ath12k_htc_control_rx_complete(struct ath12k_base *ab, struct sk_buff *skb) { /* This is unexpected. FW is not supposed to send regular rx on this * endpoint. */ ath12k_warn(ab, "unexpected htc rx\n"); kfree_skb(skb); } static const char *htc_service_name(enum ath12k_htc_svc_id id) { switch (id) { case ATH12K_HTC_SVC_ID_RESERVED: return "Reserved"; case ATH12K_HTC_SVC_ID_RSVD_CTRL: return "Control"; case ATH12K_HTC_SVC_ID_WMI_CONTROL: return "WMI"; case ATH12K_HTC_SVC_ID_WMI_DATA_BE: return "DATA BE"; case ATH12K_HTC_SVC_ID_WMI_DATA_BK: return "DATA BK"; case ATH12K_HTC_SVC_ID_WMI_DATA_VI: return "DATA VI"; case ATH12K_HTC_SVC_ID_WMI_DATA_VO: return "DATA VO"; case ATH12K_HTC_SVC_ID_WMI_CONTROL_MAC1: return "WMI MAC1"; case ATH12K_HTC_SVC_ID_WMI_CONTROL_MAC2: return "WMI MAC2"; case ATH12K_HTC_SVC_ID_NMI_CONTROL: return "NMI Control"; case ATH12K_HTC_SVC_ID_NMI_DATA: return "NMI Data"; case ATH12K_HTC_SVC_ID_HTT_DATA_MSG: return "HTT Data"; case ATH12K_HTC_SVC_ID_TEST_RAW_STREAMS: return "RAW"; case ATH12K_HTC_SVC_ID_IPA_TX: return "IPA TX"; case ATH12K_HTC_SVC_ID_PKT_LOG: return "PKT LOG"; case ATH12K_HTC_SVC_ID_WMI_CONTROL_DIAG: return "WMI DIAG"; } return "Unknown"; } static void ath12k_htc_reset_endpoint_states(struct ath12k_htc *htc) { struct ath12k_htc_ep *ep; int i; for (i = ATH12K_HTC_EP_0; i < ATH12K_HTC_EP_COUNT; i++) { ep = &htc->endpoint[i]; ep->service_id = ATH12K_HTC_SVC_ID_UNUSED; ep->max_ep_message_len = 0; ep->max_tx_queue_depth = 0; ep->eid = i; ep->htc = htc; ep->tx_credit_flow_enabled = true; } } static u8 ath12k_htc_get_credit_allocation(struct ath12k_htc *htc, u16 service_id) { struct ath12k_htc_svc_tx_credits *serv_entry; u8 i, allocation = 0; serv_entry = htc->service_alloc_table; for (i = 0; i < ATH12K_HTC_MAX_SERVICE_ALLOC_ENTRIES; i++) { if (serv_entry[i].service_id == service_id) { allocation = serv_entry[i].credit_allocation; break; } } return allocation; } static int ath12k_htc_setup_target_buffer_assignments(struct ath12k_htc *htc) { struct ath12k_htc_svc_tx_credits *serv_entry; static const u32 svc_id[] = { ATH12K_HTC_SVC_ID_WMI_CONTROL, ATH12K_HTC_SVC_ID_WMI_CONTROL_MAC1, ATH12K_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 ath12k_htc_wait_target(struct ath12k_htc *htc) { int i, status = 0; struct ath12k_base *ab = htc->ab; unsigned long time_left; struct ath12k_htc_ready *ready; u16 message_id; u16 credit_count; u16 credit_size; time_left = wait_for_completion_timeout(&htc->ctl_resp, ATH12K_HTC_WAIT_TIMEOUT_HZ); if (!time_left) { ath12k_warn(ab, "failed to receive control response completion, polling..\n"); for (i = 0; i < ab->hw_params->ce_count; i++) ath12k_ce_per_engine_service(htc->ab, i); time_left = wait_for_completion_timeout(&htc->ctl_resp, ATH12K_HTC_WAIT_TIMEOUT_HZ); if (!time_left) status = -ETIMEDOUT; } if (status < 0) { ath12k_warn(ab, "ctl_resp never came in (%d)\n", status); return status; } if (htc->control_resp_len < sizeof(*ready)) { ath12k_warn(ab, "Invalid HTC ready msg len:%d\n", htc->control_resp_len); return -ECOMM; } ready = (struct ath12k_htc_ready *)htc->control_resp_buffer; message_id = le32_get_bits(ready->id_credit_count, HTC_MSG_MESSAGEID); credit_count = le32_get_bits(ready->id_credit_count, HTC_READY_MSG_CREDITCOUNT); credit_size = le32_get_bits(ready->size_ep, HTC_READY_MSG_CREDITSIZE); if (message_id != ATH12K_HTC_MSG_READY_ID) { ath12k_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; ath12k_dbg(ab, ATH12K_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)) { ath12k_warn(ab, "Invalid credit size received\n"); return -ECOMM; } ath12k_htc_setup_target_buffer_assignments(htc); return 0; } int ath12k_htc_connect_service(struct ath12k_htc *htc, struct ath12k_htc_svc_conn_req *conn_req, struct ath12k_htc_svc_conn_resp *conn_resp) { struct ath12k_base *ab = htc->ab; struct ath12k_htc_conn_svc *req_msg; struct ath12k_htc_conn_svc_resp resp_msg_dummy; struct ath12k_htc_conn_svc_resp *resp_msg = &resp_msg_dummy; enum ath12k_htc_ep_id assigned_eid = ATH12K_HTC_EP_COUNT; struct ath12k_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 == ATH12K_HTC_SVC_ID_RSVD_CTRL) { disable_credit_flow_ctrl = true; assigned_eid = ATH12K_HTC_EP_0; max_msg_size = ATH12K_HTC_MAX_CTRL_MSG_LEN; memset(&resp_msg_dummy, 0, sizeof(resp_msg_dummy)); goto setup; } tx_alloc = ath12k_htc_get_credit_allocation(htc, conn_req->service_id); if (!tx_alloc) ath12k_dbg(ab, ATH12K_DBG_BOOT, "boot htc service %s does not allocate target credits\n", htc_service_name(conn_req->service_id)); skb = ath12k_htc_build_tx_ctrl_skb(); if (!skb) { ath12k_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 ath12k_htc_conn_svc *)skb->data; req_msg->msg_svc_id = le32_encode_bits(ATH12K_HTC_MSG_CONNECT_SERVICE_ID, HTC_MSG_MESSAGEID); flags |= u32_encode_bits(tx_alloc, ATH12K_HTC_CONN_FLAGS_RECV_ALLOC); /* Only enable credit flow control for WMI ctrl service */ if (!(conn_req->service_id == ATH12K_HTC_SVC_ID_WMI_CONTROL || conn_req->service_id == ATH12K_HTC_SVC_ID_WMI_CONTROL_MAC1 || conn_req->service_id == ATH12K_HTC_SVC_ID_WMI_CONTROL_MAC2)) { flags |= ATH12K_HTC_CONN_FLAGS_DISABLE_CREDIT_FLOW_CTRL; disable_credit_flow_ctrl = true; } req_msg->flags_len = le32_encode_bits(flags, HTC_SVC_MSG_CONNECTIONFLAGS); req_msg->msg_svc_id |= le32_encode_bits(conn_req->service_id, HTC_SVC_MSG_SERVICE_ID); reinit_completion(&htc->ctl_resp); status = ath12k_htc_send(htc, ATH12K_HTC_EP_0, skb); if (status) { kfree_skb(skb); return status; } /* wait for response */ time_left = wait_for_completion_timeout(&htc->ctl_resp, ATH12K_HTC_CONN_SVC_TIMEOUT_HZ); if (!time_left) { ath12k_err(ab, "Service connect timeout\n"); return -ETIMEDOUT; } /* we controlled the buffer creation, it's aligned */ resp_msg = (struct ath12k_htc_conn_svc_resp *)htc->control_resp_buffer; message_id = le32_get_bits(resp_msg->msg_svc_id, HTC_MSG_MESSAGEID); service_id = le32_get_bits(resp_msg->msg_svc_id, HTC_SVC_RESP_MSG_SERVICEID); if ((message_id != ATH12K_HTC_MSG_CONNECT_SERVICE_RESP_ID) || (htc->control_resp_len < sizeof(*resp_msg))) { ath12k_err(ab, "Invalid resp message ID 0x%x", message_id); return -EPROTO; } ath12k_dbg(ab, ATH12K_DBG_HTC, "HTC Service %s connect response: status: %u, assigned ep: %u\n", htc_service_name(service_id), le32_get_bits(resp_msg->flags_len, HTC_SVC_RESP_MSG_STATUS), le32_get_bits(resp_msg->flags_len, HTC_SVC_RESP_MSG_ENDPOINTID)); conn_resp->connect_resp_code = le32_get_bits(resp_msg->flags_len, HTC_SVC_RESP_MSG_STATUS); /* check response status */ if (conn_resp->connect_resp_code != ATH12K_HTC_CONN_SVC_STATUS_SUCCESS) { ath12k_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 = le32_get_bits(resp_msg->flags_len, HTC_SVC_RESP_MSG_ENDPOINTID); max_msg_size = le32_get_bits(resp_msg->flags_len, HTC_SVC_RESP_MSG_MAXMSGSIZE); setup: if (assigned_eid >= ATH12K_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 != ATH12K_HTC_SVC_ID_UNUSED) return -EPROTO; /* return assigned endpoint to caller */ conn_resp->eid = assigned_eid; conn_resp->max_msg_len = le32_get_bits(resp_msg->flags_len, HTC_SVC_RESP_MSG_MAXMSGSIZE); /* 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 = le32_get_bits(resp_msg->flags_len, HTC_SVC_RESP_MSG_MAXMSGSIZE); ep->tx_credits = tx_alloc; /* copy all the callbacks */ ep->ep_ops = conn_req->ep_ops; status = ath12k_hif_map_service_to_pipe(htc->ab, ep->service_id, &ep->ul_pipe_id, &ep->dl_pipe_id); if (status) return status; ath12k_dbg(ab, ATH12K_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; ath12k_dbg(ab, ATH12K_DBG_BOOT, "boot htc service '%s' eid %d TX flow control disabled\n", htc_service_name(ep->service_id), assigned_eid); } return status; } int ath12k_htc_start(struct ath12k_htc *htc) { struct sk_buff *skb; int status; struct ath12k_base *ab = htc->ab; struct ath12k_htc_setup_complete_extended *msg; skb = ath12k_htc_build_tx_ctrl_skb(); if (!skb) return -ENOMEM; skb_put(skb, sizeof(*msg)); memset(skb->data, 0, skb->len); msg = (struct ath12k_htc_setup_complete_extended *)skb->data; msg->msg_id = le32_encode_bits(ATH12K_HTC_MSG_SETUP_COMPLETE_EX_ID, HTC_MSG_MESSAGEID); ath12k_dbg(ab, ATH12K_DBG_HTC, "HTC is using TX credit flow control\n"); status = ath12k_htc_send(htc, ATH12K_HTC_EP_0, skb); if (status) { kfree_skb(skb); return status; } return 0; } int ath12k_htc_init(struct ath12k_base *ab) { struct ath12k_htc *htc = &ab->htc; struct ath12k_htc_svc_conn_req conn_req = { }; struct ath12k_htc_svc_conn_resp conn_resp = { }; int ret; spin_lock_init(&htc->tx_lock); ath12k_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 */ conn_req.ep_ops.ep_tx_complete = ath12k_htc_control_tx_complete; conn_req.ep_ops.ep_rx_complete = ath12k_htc_control_rx_complete; conn_req.max_send_queue_depth = ATH12K_NUM_CONTROL_TX_BUFFERS; conn_req.service_id = ATH12K_HTC_SVC_ID_RSVD_CTRL; /* connect fake service */ ret = ath12k_htc_connect_service(htc, &conn_req, &conn_resp); if (ret) { ath12k_err(ab, "could not connect to htc service (%d)\n", ret); return ret; } init_completion(&htc->ctl_resp); return 0; }
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