/*
* 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
/* 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_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 0xFF00
/* connect response status codes */
#define HTC_SERVICE_SUCCESS 0
#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))
#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
/* 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_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
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 {
};
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;
};
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 {
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 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;
/* max messages per bundle for HTC */
int msg_per_bndl_max;
- bool tx_bndl_enable;
+ u32 tx_bndl_mask;
int rx_bndl_enable;
int max_rx_bndl_sz;
int max_tx_bndl_sz;
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;
};
-void *ath6kl_htc_create(struct ath6kl *ar);
-void ath6kl_htc_set_credit_dist(struct htc_target *target,
- struct ath6kl_htc_credit_info *cred_info,
- u16 svc_pri_order[], int len);
-int ath6kl_htc_wait_target(struct htc_target *target);
-int ath6kl_htc_start(struct htc_target *target);
-int ath6kl_htc_conn_service(struct htc_target *target,
- struct htc_service_connect_req *req,
- struct htc_service_connect_resp *resp);
-int ath6kl_htc_tx(struct htc_target *target, struct htc_packet *packet);
-void ath6kl_htc_stop(struct htc_target *target);
-void ath6kl_htc_cleanup(struct htc_target *target);
-void ath6kl_htc_flush_txep(struct htc_target *target,
- enum htc_endpoint_id endpoint, u16 tag);
-void ath6kl_htc_flush_rx_buf(struct htc_target *target);
-void ath6kl_htc_indicate_activity_change(struct htc_target *target,
- enum htc_endpoint_id endpoint,
- bool active);
-int ath6kl_htc_get_rxbuf_num(struct htc_target *target,
- enum htc_endpoint_id endpoint);
-int ath6kl_htc_add_rxbuf_multiple(struct htc_target *target,
- struct list_head *pktq);
int ath6kl_htc_rxmsg_pending_handler(struct htc_target *target,
u32 msg_look_ahead, int *n_pkts);
-int ath6kl_credit_setup(void *htc_handle,
- struct ath6kl_htc_credit_info *cred_info);
-
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)
return depth;
}
+void ath6kl_htc_pipe_attach(struct ath6kl *ar);
+void ath6kl_htc_mbox_attach(struct ath6kl *ar);
+
#endif