Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Kalle Valo | 971 | 81.94% | 3 | 17.65% |
Erik Stromdahl | 132 | 11.14% | 5 | 29.41% |
Govind Singh | 31 | 2.62% | 1 | 5.88% |
Rajkumar Manoharan | 28 | 2.36% | 3 | 17.65% |
Michal Kazior | 19 | 1.60% | 4 | 23.53% |
Alagu Sankar | 4 | 0.34% | 1 | 5.88% |
Total | 1185 | 17 |
/* * Copyright (c) 2005-2011 Atheros Communications Inc. * Copyright (c) 2011-2016 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. */ #ifndef _HTC_H_ #define _HTC_H_ #include <linux/kernel.h> #include <linux/list.h> #include <linux/bug.h> #include <linux/skbuff.h> #include <linux/timer.h> struct ath10k; /****************/ /* HTC protocol */ /****************/ /* * HTC - host-target control protocol * * tx packets are generally <htc_hdr><payload> * rx packets are more complex: <htc_hdr><payload><trailer> * * The payload + trailer length is stored in len. * To get payload-only length one needs to payload - trailer_len. * * Trailer contains (possibly) multiple <htc_record>. * Each record is a id-len-value. * * HTC header flags, control_byte0, control_byte1 * have different meaning depending whether its tx * or rx. * * Alignment: htc_hdr, payload and trailer are * 4-byte aligned. */ #define HTC_HOST_MAX_MSG_PER_RX_BUNDLE 8 #define HTC_HOST_MAX_MSG_PER_TX_BUNDLE 16 enum ath10k_htc_tx_flags { ATH10K_HTC_FLAG_NEED_CREDIT_UPDATE = 0x01, ATH10K_HTC_FLAG_SEND_BUNDLE = 0x02 }; enum ath10k_htc_rx_flags { ATH10K_HTC_FLAGS_RECV_1MORE_BLOCK = 0x01, ATH10K_HTC_FLAG_TRAILER_PRESENT = 0x02, ATH10K_HTC_FLAG_BUNDLE_MASK = 0xF0 }; struct ath10k_htc_hdr { u8 eid; /* @enum ath10k_htc_ep_id */ u8 flags; /* @enum ath10k_htc_tx_flags, ath10k_htc_rx_flags */ __le16 len; union { u8 trailer_len; /* for rx */ u8 control_byte0; } __packed; union { u8 seq_no; /* for tx */ u8 control_byte1; } __packed; u8 pad0; u8 pad1; } __packed __aligned(4); enum ath10k_ath10k_htc_msg_id { ATH10K_HTC_MSG_READY_ID = 1, ATH10K_HTC_MSG_CONNECT_SERVICE_ID = 2, ATH10K_HTC_MSG_CONNECT_SERVICE_RESP_ID = 3, ATH10K_HTC_MSG_SETUP_COMPLETE_ID = 4, ATH10K_HTC_MSG_SETUP_COMPLETE_EX_ID = 5, ATH10K_HTC_MSG_SEND_SUSPEND_COMPLETE = 6 }; enum ath10k_htc_version { ATH10K_HTC_VERSION_2P0 = 0x00, /* 2.0 */ ATH10K_HTC_VERSION_2P1 = 0x01, /* 2.1 */ }; enum ath10k_htc_conn_flags { ATH10K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_ONE_FOURTH = 0x0, ATH10K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_ONE_HALF = 0x1, ATH10K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_THREE_FOURTHS = 0x2, ATH10K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_UNITY = 0x3, #define ATH10K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_MASK 0x3 ATH10K_HTC_CONN_FLAGS_REDUCE_CREDIT_DRIBBLE = 1 << 2, ATH10K_HTC_CONN_FLAGS_DISABLE_CREDIT_FLOW_CTRL = 1 << 3 #define ATH10K_HTC_CONN_FLAGS_RECV_ALLOC_MASK 0xFF00 #define ATH10K_HTC_CONN_FLAGS_RECV_ALLOC_LSB 8 }; enum ath10k_htc_conn_svc_status { ATH10K_HTC_CONN_SVC_STATUS_SUCCESS = 0, ATH10K_HTC_CONN_SVC_STATUS_NOT_FOUND = 1, ATH10K_HTC_CONN_SVC_STATUS_FAILED = 2, ATH10K_HTC_CONN_SVC_STATUS_NO_RESOURCES = 3, ATH10K_HTC_CONN_SVC_STATUS_NO_MORE_EP = 4 }; enum ath10k_htc_setup_complete_flags { ATH10K_HTC_SETUP_COMPLETE_FLAGS_RX_BNDL_EN = 1 }; struct ath10k_ath10k_htc_msg_hdr { __le16 message_id; /* @enum htc_message_id */ } __packed; struct ath10k_htc_unknown { u8 pad0; u8 pad1; } __packed; struct ath10k_htc_ready { __le16 credit_count; __le16 credit_size; u8 max_endpoints; u8 pad0; } __packed; struct ath10k_htc_ready_extended { struct ath10k_htc_ready base; u8 htc_version; /* @enum ath10k_htc_version */ u8 max_msgs_per_htc_bundle; u8 pad0; u8 pad1; } __packed; struct ath10k_htc_conn_svc { __le16 service_id; __le16 flags; /* @enum ath10k_htc_conn_flags */ u8 pad0; u8 pad1; } __packed; struct ath10k_htc_conn_svc_response { __le16 service_id; u8 status; /* @enum ath10k_htc_conn_svc_status */ u8 eid; __le16 max_msg_size; } __packed; struct ath10k_htc_setup_complete_extended { u8 pad0; u8 pad1; __le32 flags; /* @enum htc_setup_complete_flags */ u8 max_msgs_per_bundled_recv; u8 pad2; u8 pad3; u8 pad4; } __packed; struct ath10k_htc_msg { struct ath10k_ath10k_htc_msg_hdr hdr; union { /* host-to-target */ struct ath10k_htc_conn_svc connect_service; struct ath10k_htc_ready ready; struct ath10k_htc_ready_extended ready_ext; struct ath10k_htc_unknown unknown; struct ath10k_htc_setup_complete_extended setup_complete_ext; /* target-to-host */ struct ath10k_htc_conn_svc_response connect_service_response; }; } __packed __aligned(4); enum ath10k_ath10k_htc_record_id { ATH10K_HTC_RECORD_NULL = 0, ATH10K_HTC_RECORD_CREDITS = 1, ATH10K_HTC_RECORD_LOOKAHEAD = 2, ATH10K_HTC_RECORD_LOOKAHEAD_BUNDLE = 3, }; struct ath10k_ath10k_htc_record_hdr { u8 id; /* @enum ath10k_ath10k_htc_record_id */ u8 len; u8 pad0; u8 pad1; } __packed; struct ath10k_htc_credit_report { u8 eid; /* @enum ath10k_htc_ep_id */ u8 credits; u8 pad0; u8 pad1; } __packed; struct ath10k_htc_lookahead_report { u8 pre_valid; u8 pad0; u8 pad1; u8 pad2; u8 lookahead[4]; u8 post_valid; u8 pad3; u8 pad4; u8 pad5; } __packed; struct ath10k_htc_lookahead_bundle { u8 lookahead[4]; } __packed; struct ath10k_htc_record { struct ath10k_ath10k_htc_record_hdr hdr; union { struct ath10k_htc_credit_report credit_report[0]; struct ath10k_htc_lookahead_report lookahead_report[0]; struct ath10k_htc_lookahead_bundle lookahead_bundle[0]; u8 pauload[0]; }; } __packed __aligned(4); /* * note: the trailer offset is dynamic depending * on payload length. this is only a struct layout draft */ struct ath10k_htc_frame { struct ath10k_htc_hdr hdr; union { struct ath10k_htc_msg msg; u8 payload[0]; }; struct ath10k_htc_record trailer[0]; } __packed __aligned(4); /*******************/ /* Host-side stuff */ /*******************/ enum ath10k_htc_svc_gid { ATH10K_HTC_SVC_GRP_RSVD = 0, ATH10K_HTC_SVC_GRP_WMI = 1, ATH10K_HTC_SVC_GRP_NMI = 2, ATH10K_HTC_SVC_GRP_HTT = 3, ATH10K_LOG_SERVICE_GROUP = 6, ATH10K_HTC_SVC_GRP_TEST = 254, ATH10K_HTC_SVC_GRP_LAST = 255, }; #define SVC(group, idx) \ (int)(((int)(group) << 8) | (int)(idx)) enum ath10k_htc_svc_id { /* NOTE: service ID of 0x0000 is reserved and should never be used */ ATH10K_HTC_SVC_ID_RESERVED = 0x0000, ATH10K_HTC_SVC_ID_UNUSED = ATH10K_HTC_SVC_ID_RESERVED, ATH10K_HTC_SVC_ID_RSVD_CTRL = SVC(ATH10K_HTC_SVC_GRP_RSVD, 1), ATH10K_HTC_SVC_ID_WMI_CONTROL = SVC(ATH10K_HTC_SVC_GRP_WMI, 0), ATH10K_HTC_SVC_ID_WMI_DATA_BE = SVC(ATH10K_HTC_SVC_GRP_WMI, 1), ATH10K_HTC_SVC_ID_WMI_DATA_BK = SVC(ATH10K_HTC_SVC_GRP_WMI, 2), ATH10K_HTC_SVC_ID_WMI_DATA_VI = SVC(ATH10K_HTC_SVC_GRP_WMI, 3), ATH10K_HTC_SVC_ID_WMI_DATA_VO = SVC(ATH10K_HTC_SVC_GRP_WMI, 4), ATH10K_HTC_SVC_ID_NMI_CONTROL = SVC(ATH10K_HTC_SVC_GRP_NMI, 0), ATH10K_HTC_SVC_ID_NMI_DATA = SVC(ATH10K_HTC_SVC_GRP_NMI, 1), ATH10K_HTC_SVC_ID_HTT_DATA_MSG = SVC(ATH10K_HTC_SVC_GRP_HTT, 0), ATH10K_HTC_SVC_ID_HTT_DATA2_MSG = SVC(ATH10K_HTC_SVC_GRP_HTT, 1), ATH10K_HTC_SVC_ID_HTT_DATA3_MSG = SVC(ATH10K_HTC_SVC_GRP_HTT, 2), ATH10K_HTC_SVC_ID_HTT_LOG_MSG = SVC(ATH10K_LOG_SERVICE_GROUP, 0), /* raw stream service (i.e. flash, tcmd, calibration apps) */ ATH10K_HTC_SVC_ID_TEST_RAW_STREAMS = SVC(ATH10K_HTC_SVC_GRP_TEST, 0), }; #undef SVC enum ath10k_htc_ep_id { ATH10K_HTC_EP_UNUSED = -1, ATH10K_HTC_EP_0 = 0, ATH10K_HTC_EP_1 = 1, ATH10K_HTC_EP_2, ATH10K_HTC_EP_3, ATH10K_HTC_EP_4, ATH10K_HTC_EP_5, ATH10K_HTC_EP_6, ATH10K_HTC_EP_7, ATH10K_HTC_EP_8, ATH10K_HTC_EP_COUNT, }; struct ath10k_htc_ops { void (*target_send_suspend_complete)(struct ath10k *ar); }; struct ath10k_htc_ep_ops { void (*ep_tx_complete)(struct ath10k *, struct sk_buff *); void (*ep_rx_complete)(struct ath10k *, struct sk_buff *); void (*ep_tx_credits)(struct ath10k *); }; /* service connection information */ struct ath10k_htc_svc_conn_req { u16 service_id; struct ath10k_htc_ep_ops ep_ops; int max_send_queue_depth; }; /* service connection response information */ struct ath10k_htc_svc_conn_resp { u8 buffer_len; u8 actual_len; enum ath10k_htc_ep_id eid; unsigned int max_msg_len; u8 connect_resp_code; }; #define ATH10K_NUM_CONTROL_TX_BUFFERS 2 #define ATH10K_HTC_MAX_LEN 4096 #define ATH10K_HTC_MAX_CTRL_MSG_LEN 256 #define ATH10K_HTC_WAIT_TIMEOUT_HZ (1 * HZ) #define ATH10K_HTC_CONTROL_BUFFER_SIZE (ATH10K_HTC_MAX_CTRL_MSG_LEN + \ sizeof(struct ath10k_htc_hdr)) #define ATH10K_HTC_CONN_SVC_TIMEOUT_HZ (1 * HZ) struct ath10k_htc_ep { struct ath10k_htc *htc; enum ath10k_htc_ep_id eid; enum ath10k_htc_svc_id service_id; struct ath10k_htc_ep_ops ep_ops; int max_tx_queue_depth; int max_ep_message_len; u8 ul_pipe_id; u8 dl_pipe_id; u8 seq_no; /* for debugging */ int tx_credits; bool tx_credit_flow_enabled; }; struct ath10k_htc_svc_tx_credits { u16 service_id; u8 credit_allocation; }; struct ath10k_htc { struct ath10k *ar; struct ath10k_htc_ep endpoint[ATH10K_HTC_EP_COUNT]; /* protects endpoints */ spinlock_t tx_lock; struct ath10k_htc_ops htc_ops; u8 control_resp_buffer[ATH10K_HTC_MAX_CTRL_MSG_LEN]; int control_resp_len; struct completion ctl_resp; int total_transmit_credits; int target_credit_size; u8 max_msgs_per_htc_bundle; }; int ath10k_htc_init(struct ath10k *ar); int ath10k_htc_wait_target(struct ath10k_htc *htc); int ath10k_htc_start(struct ath10k_htc *htc); int ath10k_htc_connect_service(struct ath10k_htc *htc, struct ath10k_htc_svc_conn_req *conn_req, struct ath10k_htc_svc_conn_resp *conn_resp); int ath10k_htc_send(struct ath10k_htc *htc, enum ath10k_htc_ep_id eid, struct sk_buff *packet); struct sk_buff *ath10k_htc_alloc_skb(struct ath10k *ar, int size); void ath10k_htc_tx_completion_handler(struct ath10k *ar, struct sk_buff *skb); void ath10k_htc_rx_completion_handler(struct ath10k *ar, struct sk_buff *skb); void ath10k_htc_notify_tx_completion(struct ath10k_htc_ep *ep, struct sk_buff *skb); int ath10k_htc_process_trailer(struct ath10k_htc *htc, u8 *buffer, int length, enum ath10k_htc_ep_id src_eid, void *next_lookaheads, int *next_lookaheads_len); #endif
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