| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Kalle Valo | 1694 | 96.86% | 10 | 50.00% |
| Vasanthakumar Thiagarajan | 37 | 2.12% | 6 | 30.00% |
| Chilam Ng | 16 | 0.91% | 2 | 10.00% |
| Vladimir Murzin | 1 | 0.06% | 1 | 5.00% |
| Nik Nyby | 1 | 0.06% | 1 | 5.00% |
| Total | 1749 | 20 |
/* * Copyright (c) 2004-2011 Atheros Communications Inc. * Copyright (c) 2011 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 "common.h" /* frame header flags */ /* send direction */ #define HTC_FLAGS_NEED_CREDIT_UPDATE (1 << 0) #define HTC_FLAGS_SEND_BUNDLE (1 << 1) #define HTC_FLAGS_TX_FIXUP_NETBUF (1 << 2) /* receive direction */ #define HTC_FLG_RX_UNUSED (1 << 0) #define HTC_FLG_RX_TRAILER (1 << 1) /* Bundle count maske and shift */ #define HTC_FLG_RX_BNDL_CNT (0xF0) #define HTC_FLG_RX_BNDL_CNT_S 4 #define HTC_HDR_LENGTH (sizeof(struct htc_frame_hdr)) #define HTC_MAX_PAYLOAD_LENGTH (4096 - sizeof(struct htc_frame_hdr)) /* HTC control message IDs */ #define HTC_MSG_READY_ID 1 #define HTC_MSG_CONN_SVC_ID 2 #define HTC_MSG_CONN_SVC_RESP_ID 3 #define HTC_MSG_SETUP_COMPLETE_ID 4 #define HTC_MSG_SETUP_COMPLETE_EX_ID 5 #define HTC_MAX_CTRL_MSG_LEN 256 #define HTC_VERSION_2P0 0x00 #define HTC_VERSION_2P1 0x01 #define HTC_SERVICE_META_DATA_MAX_LENGTH 128 #define HTC_CONN_FLGS_THRESH_LVL_QUAT 0x0 #define HTC_CONN_FLGS_THRESH_LVL_HALF 0x1 #define HTC_CONN_FLGS_THRESH_LVL_THREE_QUAT 0x2 #define HTC_CONN_FLGS_REDUCE_CRED_DRIB 0x4 #define HTC_CONN_FLGS_THRESH_MASK 0x3 /* disable credit flow control on a specific service */ #define HTC_CONN_FLGS_DISABLE_CRED_FLOW_CTRL (1 << 3) #define HTC_CONN_FLGS_SET_RECV_ALLOC_SHIFT 8 #define HTC_CONN_FLGS_SET_RECV_ALLOC_MASK 0xFF00U /* connect response status codes */ #define HTC_SERVICE_SUCCESS 0 #define HTC_SERVICE_NOT_FOUND 1 #define HTC_SERVICE_FAILED 2 /* no resources (i.e. no more endpoints) */ #define HTC_SERVICE_NO_RESOURCES 3 /* specific service is not allowing any more endpoints */ #define HTC_SERVICE_NO_MORE_EP 4 /* report record IDs */ #define HTC_RECORD_NULL 0 #define HTC_RECORD_CREDITS 1 #define HTC_RECORD_LOOKAHEAD 2 #define HTC_RECORD_LOOKAHEAD_BUNDLE 3 #define HTC_SETUP_COMP_FLG_RX_BNDL_EN (1 << 0) #define HTC_SETUP_COMP_FLG_DISABLE_TX_CREDIT_FLOW (1 << 1) #define MAKE_SERVICE_ID(group, index) \ (int)(((int)group << 8) | (int)(index)) /* NOTE: service ID of 0x0000 is reserved and should never be used */ #define HTC_CTRL_RSVD_SVC MAKE_SERVICE_ID(RSVD_SERVICE_GROUP, 1) #define WMI_CONTROL_SVC MAKE_SERVICE_ID(WMI_SERVICE_GROUP, 0) #define WMI_DATA_BE_SVC MAKE_SERVICE_ID(WMI_SERVICE_GROUP, 1) #define WMI_DATA_BK_SVC MAKE_SERVICE_ID(WMI_SERVICE_GROUP, 2) #define WMI_DATA_VI_SVC MAKE_SERVICE_ID(WMI_SERVICE_GROUP, 3) #define WMI_DATA_VO_SVC MAKE_SERVICE_ID(WMI_SERVICE_GROUP, 4) #define WMI_MAX_SERVICES 5 #define WMM_NUM_AC 4 /* reserved and used to flush ALL packets */ #define HTC_TX_PACKET_TAG_ALL 0 #define HTC_SERVICE_TX_PACKET_TAG 1 #define HTC_TX_PACKET_TAG_USER_DEFINED (HTC_SERVICE_TX_PACKET_TAG + 9) /* more packets on this endpoint are being fetched */ #define HTC_RX_FLAGS_INDICATE_MORE_PKTS (1 << 0) /* TODO.. for BMI */ #define ENDPOINT1 0 /* TODO -remove me, but we have to fix BMI first */ #define HTC_MAILBOX_NUM_MAX 4 /* enable send bundle padding for this endpoint */ #define HTC_FLGS_TX_BNDL_PAD_EN (1 << 0) #define HTC_EP_ACTIVE ((u32) (1u << 31)) /* HTC operational parameters */ #define HTC_TARGET_RESPONSE_TIMEOUT 2000 /* in ms */ #define HTC_TARGET_RESPONSE_POLL_WAIT 10 #define HTC_TARGET_RESPONSE_POLL_COUNT 200 #define HTC_TARGET_DEBUG_INTR_MASK 0x01 #define HTC_TARGET_CREDIT_INTR_MASK 0xF0 #define HTC_HOST_MAX_MSG_PER_BUNDLE 8 #define HTC_MIN_HTC_MSGS_TO_BUNDLE 2 /* packet flags */ #define HTC_RX_PKT_IGNORE_LOOKAHEAD (1 << 0) #define HTC_RX_PKT_REFRESH_HDR (1 << 1) #define HTC_RX_PKT_PART_OF_BUNDLE (1 << 2) #define HTC_RX_PKT_NO_RECYCLE (1 << 3) #define NUM_CONTROL_BUFFERS 8 #define NUM_CONTROL_TX_BUFFERS 2 #define NUM_CONTROL_RX_BUFFERS (NUM_CONTROL_BUFFERS - NUM_CONTROL_TX_BUFFERS) #define HTC_RECV_WAIT_BUFFERS (1 << 0) #define HTC_OP_STATE_STOPPING (1 << 0) #define HTC_OP_STATE_SETUP_COMPLETE (1 << 1) /* * The frame header length and message formats defined herein were selected * to accommodate optimal alignment for target processing. This reduces * code size and improves performance. Any changes to the header length may * alter the alignment and cause exceptions on the target. When adding to * the messagestructures insure that fields are properly aligned. */ /* HTC frame header * * NOTE: do not remove or re-arrange the fields, these are minimally * required to take advantage of 4-byte lookaheads in some hardware * implementations. */ struct htc_frame_hdr { u8 eid; u8 flags; /* length of data (including trailer) that follows the header */ __le16 payld_len; /* end of 4-byte lookahead */ u8 ctrl[2]; } __packed; /* HTC ready message */ struct htc_ready_msg { __le16 msg_id; __le16 cred_cnt; __le16 cred_sz; u8 max_ep; u8 pad; } __packed; /* extended HTC ready message */ struct htc_ready_ext_msg { struct htc_ready_msg ver2_0_info; u8 htc_ver; u8 msg_per_htc_bndl; } __packed; /* connect service */ struct htc_conn_service_msg { __le16 msg_id; __le16 svc_id; __le16 conn_flags; u8 svc_meta_len; u8 pad; } __packed; /* connect response */ struct htc_conn_service_resp { __le16 msg_id; __le16 svc_id; u8 status; u8 eid; __le16 max_msg_sz; u8 svc_meta_len; u8 pad; } __packed; struct htc_setup_comp_msg { __le16 msg_id; } __packed; /* extended setup completion message */ struct htc_setup_comp_ext_msg { __le16 msg_id; __le32 flags; u8 msg_per_rxbndl; u8 Rsvd[3]; } __packed; struct htc_record_hdr { u8 rec_id; u8 len; } __packed; struct htc_credit_report { u8 eid; u8 credits; } __packed; /* * NOTE: The lk_ahd array is guarded by a pre_valid * and Post Valid guard bytes. The pre_valid bytes must * equal the inverse of the post_valid byte. */ struct htc_lookahead_report { u8 pre_valid; u8 lk_ahd[4]; u8 post_valid; } __packed; struct htc_bundle_lkahd_rpt { u8 lk_ahd[4]; } __packed; /* Current service IDs */ enum htc_service_grp_ids { RSVD_SERVICE_GROUP = 0, WMI_SERVICE_GROUP = 1, HTC_TEST_GROUP = 254, HTC_SERVICE_GROUP_LAST = 255 }; /* ------ endpoint IDS ------ */ enum htc_endpoint_id { ENDPOINT_UNUSED = -1, ENDPOINT_0 = 0, ENDPOINT_1 = 1, ENDPOINT_2 = 2, ENDPOINT_3, ENDPOINT_4, ENDPOINT_5, ENDPOINT_6, ENDPOINT_7, ENDPOINT_8, ENDPOINT_MAX, }; struct htc_tx_packet_info { u16 tag; int cred_used; u8 flags; int seqno; }; struct htc_rx_packet_info { u32 exp_hdr; u32 rx_flags; u32 indicat_flags; }; struct htc_target; /* wrapper around endpoint-specific packets */ struct htc_packet { struct list_head list; /* caller's per packet specific context */ void *pkt_cntxt; /* * the true buffer start , the caller can store the real * buffer start here. In receive callbacks, the HTC layer * sets buf to the start of the payload past the header. * This field allows the caller to reset buf when it recycles * receive packets back to HTC. */ u8 *buf_start; /* * Pointer to the start of the buffer. In the transmit * direction this points to the start of the payload. In the * receive direction, however, the buffer when queued up * points to the start of the HTC header but when returned * to the caller points to the start of the payload */ u8 *buf; u32 buf_len; /* actual length of payload */ u32 act_len; /* endpoint that this packet was sent/recv'd from */ enum htc_endpoint_id endpoint; /* completion status */ int status; union { struct htc_tx_packet_info tx; struct htc_rx_packet_info rx; } info; void (*completion) (struct htc_target *, struct htc_packet *); struct htc_target *context; /* * optimization for network-oriented data, the HTC packet * can pass the network buffer corresponding to the HTC packet * lower layers may optimized the transfer knowing this is * a network buffer */ struct sk_buff *skb; }; enum htc_send_full_action { HTC_SEND_FULL_KEEP = 0, HTC_SEND_FULL_DROP = 1, }; struct htc_ep_callbacks { void (*tx_complete) (struct htc_target *, struct htc_packet *); void (*rx) (struct htc_target *, struct htc_packet *); void (*rx_refill) (struct htc_target *, enum htc_endpoint_id endpoint); enum htc_send_full_action (*tx_full) (struct htc_target *, struct htc_packet *); struct htc_packet *(*rx_allocthresh) (struct htc_target *, enum htc_endpoint_id, int); void (*tx_comp_multi) (struct htc_target *, struct list_head *); int rx_alloc_thresh; int rx_refill_thresh; }; /* service connection information */ struct htc_service_connect_req { u16 svc_id; u16 conn_flags; struct htc_ep_callbacks ep_cb; int max_txq_depth; u32 flags; unsigned int max_rxmsg_sz; }; /* service connection response information */ struct htc_service_connect_resp { u8 buf_len; u8 act_len; enum htc_endpoint_id endpoint; unsigned int len_max; u8 resp_code; }; /* endpoint distributionstructure */ struct htc_endpoint_credit_dist { struct list_head list; /* Service ID (set by HTC) */ u16 svc_id; /* endpoint for this distributionstruct (set by HTC) */ enum htc_endpoint_id endpoint; u32 dist_flags; /* * credits for normal operation, anything above this * indicates the endpoint is over-subscribed. */ int cred_norm; /* floor for credit distribution */ int cred_min; int cred_assngd; /* current credits available */ int credits; /* * pending credits to distribute on this endpoint, this * is set by HTC when credit reports arrive. The credit * distribution functions sets this to zero when it distributes * the credits. */ int cred_to_dist; /* * the number of credits that the current pending TX packet needs * to transmit. This is set by HTC when endpoint needs credits in * order to transmit. */ int seek_cred; /* size in bytes of each credit */ int cred_sz; /* credits required for a maximum sized messages */ int cred_per_msg; /* reserved for HTC use */ struct htc_endpoint *htc_ep; /* * current depth of TX queue , i.e. messages waiting for credits * This field is valid only when HTC_CREDIT_DIST_ACTIVITY_CHANGE * or HTC_CREDIT_DIST_SEND_COMPLETE is indicated on an endpoint * that has non-zero credits to recover. */ int txq_depth; }; /* * credit distribution code that is passed into the distribution function, * there are mandatory and optional codes that must be handled */ enum htc_credit_dist_reason { HTC_CREDIT_DIST_SEND_COMPLETE = 0, HTC_CREDIT_DIST_ACTIVITY_CHANGE = 1, HTC_CREDIT_DIST_SEEK_CREDITS, }; struct ath6kl_htc_credit_info { int total_avail_credits; int cur_free_credits; /* list of lowest priority endpoints */ struct list_head lowestpri_ep_dist; }; /* endpoint statistics */ struct htc_endpoint_stats { /* * number of times the host set the credit-low flag in a send * message on this endpoint */ u32 cred_low_indicate; u32 tx_issued; u32 tx_pkt_bundled; u32 tx_bundles; u32 tx_dropped; /* running count of total credit reports received for this endpoint */ u32 tx_cred_rpt; /* credit reports received from this endpoint's RX packets */ u32 cred_rpt_from_rx; /* credit reports received from RX packets of other endpoints */ u32 cred_rpt_from_other; /* credit reports received from endpoint 0 RX packets */ u32 cred_rpt_ep0; /* count of credits received via Rx packets on this endpoint */ u32 cred_from_rx; /* count of credits received via another endpoint */ u32 cred_from_other; /* count of credits received via another endpoint */ u32 cred_from_ep0; /* count of consummed credits */ u32 cred_cosumd; /* count of credits returned */ u32 cred_retnd; u32 rx_pkts; /* count of lookahead records found in Rx msg */ u32 rx_lkahds; /* count of recv packets received in a bundle */ u32 rx_bundl; /* count of number of bundled lookaheads */ u32 rx_bundle_lkahd; /* count of the number of bundle indications from the HTC header */ u32 rx_bundle_from_hdr; /* the number of times the recv allocation threshold was hit */ u32 rx_alloc_thresh_hit; /* total number of bytes */ u32 rxalloc_thresh_byte; }; struct htc_endpoint { enum htc_endpoint_id eid; u16 svc_id; struct list_head txq; struct list_head rx_bufq; struct htc_endpoint_credit_dist cred_dist; struct htc_ep_callbacks ep_cb; int max_txq_depth; int len_max; int tx_proc_cnt; int rx_proc_cnt; struct htc_target *target; u8 seqno; u32 conn_flags; struct htc_endpoint_stats ep_st; u16 tx_drop_packet_threshold; struct { u8 pipeid_ul; u8 pipeid_dl; struct list_head tx_lookup_queue; bool tx_credit_flow_enabled; } pipe; }; struct htc_control_buffer { struct htc_packet packet; u8 *buf; }; struct htc_pipe_txcredit_alloc { u16 service_id; u8 credit_alloc; }; enum htc_send_queue_result { HTC_SEND_QUEUE_OK = 0, /* packet was queued */ HTC_SEND_QUEUE_DROP = 1, /* this packet should be dropped */ }; struct ath6kl_htc_ops { void* (*create)(struct ath6kl *ar); int (*wait_target)(struct htc_target *target); int (*start)(struct htc_target *target); int (*conn_service)(struct htc_target *target, struct htc_service_connect_req *req, struct htc_service_connect_resp *resp); int (*tx)(struct htc_target *target, struct htc_packet *packet); void (*stop)(struct htc_target *target); void (*cleanup)(struct htc_target *target); void (*flush_txep)(struct htc_target *target, enum htc_endpoint_id endpoint, u16 tag); void (*flush_rx_buf)(struct htc_target *target); void (*activity_changed)(struct htc_target *target, enum htc_endpoint_id endpoint, bool active); int (*get_rxbuf_num)(struct htc_target *target, enum htc_endpoint_id endpoint); int (*add_rxbuf_multiple)(struct htc_target *target, struct list_head *pktq); int (*credit_setup)(struct htc_target *target, struct ath6kl_htc_credit_info *cred_info); int (*tx_complete)(struct ath6kl *ar, struct sk_buff *skb); int (*rx_complete)(struct ath6kl *ar, struct sk_buff *skb, u8 pipe); }; struct ath6kl_device; /* our HTC target state */ struct htc_target { struct htc_endpoint endpoint[ENDPOINT_MAX]; /* contains struct htc_endpoint_credit_dist */ struct list_head cred_dist_list; struct list_head free_ctrl_txbuf; struct list_head free_ctrl_rxbuf; struct ath6kl_htc_credit_info *credit_info; int tgt_creds; unsigned int tgt_cred_sz; /* protects free_ctrl_txbuf and free_ctrl_rxbuf */ spinlock_t htc_lock; /* FIXME: does this protext rx_bufq and endpoint structures or what? */ spinlock_t rx_lock; /* protects endpoint->txq */ spinlock_t tx_lock; struct ath6kl_device *dev; u32 htc_flags; u32 rx_st_flags; enum htc_endpoint_id ep_waiting; u8 htc_tgt_ver; /* max messages per bundle for HTC */ int msg_per_bndl_max; u32 tx_bndl_mask; int rx_bndl_enable; int max_rx_bndl_sz; int max_tx_bndl_sz; u32 block_sz; u32 block_mask; int max_scat_entries; int max_xfer_szper_scatreq; int chk_irq_status_cnt; /* counts the number of Tx without bundling continously per AC */ u32 ac_tx_count[WMM_NUM_AC]; struct { struct htc_packet *htc_packet_pool; u8 ctrl_response_buf[HTC_MAX_CTRL_MSG_LEN]; int ctrl_response_len; bool ctrl_response_valid; struct htc_pipe_txcredit_alloc txcredit_alloc[ENDPOINT_MAX]; } pipe; }; int ath6kl_htc_rxmsg_pending_handler(struct htc_target *target, u32 msg_look_ahead, int *n_pkts); static inline void set_htc_pkt_info(struct htc_packet *packet, void *context, u8 *buf, unsigned int len, enum htc_endpoint_id eid, u16 tag) { packet->pkt_cntxt = context; packet->buf = buf; packet->act_len = len; packet->endpoint = eid; packet->info.tx.tag = tag; } static inline void htc_rxpkt_reset(struct htc_packet *packet) { packet->buf = packet->buf_start; packet->act_len = 0; } static inline void set_htc_rxpkt_info(struct htc_packet *packet, void *context, u8 *buf, unsigned long len, enum htc_endpoint_id eid) { packet->pkt_cntxt = context; packet->buf = buf; packet->buf_start = buf; packet->buf_len = len; packet->endpoint = eid; } static inline int get_queue_depth(struct list_head *queue) { struct list_head *tmp_list; int depth = 0; list_for_each(tmp_list, queue) depth++; return depth; } void ath6kl_htc_pipe_attach(struct ath6kl *ar); void ath6kl_htc_mbox_attach(struct ath6kl *ar); #endif
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