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/*
* Copyright (c) 2010 Atheros Communications 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_HST_H
#define HTC_HST_H
struct ath9k_htc_priv;
struct htc_target;
struct ath9k_htc_tx_ctl;
enum ath9k_hif_transports {
ATH9K_HIF_USB,
};
struct ath9k_htc_hif {
struct list_head list;
const enum ath9k_hif_transports transport;
const char *name;
u8 control_dl_pipe;
u8 control_ul_pipe;
void (*start) (void *hif_handle, u8 pipe);
void (*stop) (void *hif_handle, u8 pipe);
int (*send) (void *hif_handle, u8 pipe, struct sk_buff *buf,
struct ath9k_htc_tx_ctl *tx_ctl);
};
enum htc_endpoint_id {
ENDPOINT_UNUSED = -1,
ENDPOINT0 = 0,
ENDPOINT1 = 1,
ENDPOINT2 = 2,
ENDPOINT3 = 3,
ENDPOINT4 = 4,
ENDPOINT5 = 5,
ENDPOINT6 = 6,
ENDPOINT7 = 7,
ENDPOINT8 = 8,
ENDPOINT_MAX = 22
};
/* Htc frame hdr flags */
#define HTC_FLAGS_RECV_TRAILER (1 << 1)
struct htc_frame_hdr {
u8 endpoint_id;
u8 flags;
__be16 payload_len;
u8 control[4];
} __packed;
struct htc_ready_msg {
__be16 message_id;
__be16 credits;
__be16 credit_size;
u8 max_endpoints;
u8 pad;
} __packed;
struct htc_config_pipe_msg {
__be16 message_id;
u8 pipe_id;
u8 credits;
} __packed;
struct htc_packet {
void *pktcontext;
u8 *buf;
u8 *buf_payload;
u32 buflen;
u32 payload_len;
int endpoint;
int status;
void *context;
u32 reserved;
};
struct htc_ep_callbacks {
void *priv;
void (*tx) (void *, struct sk_buff *, enum htc_endpoint_id, bool txok);
void (*rx) (void *, struct sk_buff *, enum htc_endpoint_id);
};
#define HTC_TX_QUEUE_SIZE 256
struct htc_txq {
struct sk_buff *buf[HTC_TX_QUEUE_SIZE];
u32 txqdepth;
u16 txbuf_cnt;
u16 txq_head;
u16 txq_tail;
};
struct htc_endpoint {
u16 service_id;
struct htc_ep_callbacks ep_callbacks;
struct htc_txq htc_txq;
u32 max_txqdepth;
int max_msglen;
u8 ul_pipeid;
u8 dl_pipeid;
};
#define HTC_MAX_CONTROL_MESSAGE_LENGTH 255
#define HTC_CONTROL_BUFFER_SIZE \
(HTC_MAX_CONTROL_MESSAGE_LENGTH + sizeof(struct htc_frame_hdr))
#define NUM_CONTROL_BUFFERS 8
#define HST_ENDPOINT_MAX 8
struct htc_control_buf {
struct htc_packet htc_pkt;
u8 buf[HTC_CONTROL_BUFFER_SIZE];
};
#define HTC_OP_START_WAIT BIT(0)
#define HTC_OP_CONFIG_PIPE_CREDITS BIT(1)
struct htc_target {
void *hif_dev;
struct ath9k_htc_priv *drv_priv;
struct device *dev;
struct ath9k_htc_hif *hif;
struct htc_endpoint endpoint[HST_ENDPOINT_MAX];
struct completion target_wait;
struct completion cmd_wait;
struct list_head list;
enum htc_endpoint_id conn_rsp_epid;
u16 credits;
u16 credit_size;
u8 htc_flags;
};
enum htc_msg_id {
HTC_MSG_READY_ID = 1,
HTC_MSG_CONNECT_SERVICE_ID,
HTC_MSG_CONNECT_SERVICE_RESPONSE_ID,
HTC_MSG_SETUP_COMPLETE_ID,
HTC_MSG_CONFIG_PIPE_ID,
HTC_MSG_CONFIG_PIPE_RESPONSE_ID,
};
struct htc_service_connreq {
u16 service_id;
u16 con_flags;
u32 max_send_qdepth;
struct htc_ep_callbacks ep_callbacks;
};
/* Current service IDs */
enum htc_service_group_ids{
RSVD_SERVICE_GROUP = 0,
WMI_SERVICE_GROUP = 1,
HTC_SERVICE_GROUP_LAST = 255
};
#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 HTC_LOOPBACK_RSVD_SVC MAKE_SERVICE_ID(RSVD_SERVICE_GROUP, 2)
#define WMI_CONTROL_SVC MAKE_SERVICE_ID(WMI_SERVICE_GROUP, 0)
#define WMI_BEACON_SVC MAKE_SERVICE_ID(WMI_SERVICE_GROUP, 1)
#define WMI_CAB_SVC MAKE_SERVICE_ID(WMI_SERVICE_GROUP, 2)
#define WMI_UAPSD_SVC MAKE_SERVICE_ID(WMI_SERVICE_GROUP, 3)
#define WMI_MGMT_SVC MAKE_SERVICE_ID(WMI_SERVICE_GROUP, 4)
#define WMI_DATA_VO_SVC MAKE_SERVICE_ID(WMI_SERVICE_GROUP, 5)
#define WMI_DATA_VI_SVC MAKE_SERVICE_ID(WMI_SERVICE_GROUP, 6)
#define WMI_DATA_BE_SVC MAKE_SERVICE_ID(WMI_SERVICE_GROUP, 7)
#define WMI_DATA_BK_SVC MAKE_SERVICE_ID(WMI_SERVICE_GROUP, 8)
struct htc_conn_svc_msg {
__be16 msg_id;
__be16 service_id;
__be16 con_flags;
u8 dl_pipeid;
u8 ul_pipeid;
u8 svc_meta_len;
u8 pad;
} __packed;
/* connect response status codes */
#define HTC_SERVICE_SUCCESS 0
#define HTC_SERVICE_NOT_FOUND 1
#define HTC_SERVICE_FAILED 2
#define HTC_SERVICE_NO_RESOURCES 3
#define HTC_SERVICE_NO_MORE_EP 4
struct htc_conn_svc_rspmsg {
__be16 msg_id;
__be16 service_id;
u8 status;
u8 endpoint_id;
__be16 max_msg_len;
u8 svc_meta_len;
u8 pad;
} __packed;
struct htc_comp_msg {
__be16 msg_id;
} __packed;
int htc_init(struct htc_target *target);
int htc_connect_service(struct htc_target *target,
struct htc_service_connreq *service_connreq,
enum htc_endpoint_id *conn_rsp_eid);
int htc_send(struct htc_target *target, struct sk_buff *skb,
enum htc_endpoint_id eid, struct ath9k_htc_tx_ctl *tx_ctl);
void htc_stop(struct htc_target *target);
void htc_start(struct htc_target *target);
void ath9k_htc_rx_msg(struct htc_target *htc_handle,
struct sk_buff *skb, u32 len, u8 pipe_id);
void ath9k_htc_txcompletion_cb(struct htc_target *htc_handle,
struct sk_buff *skb, bool txok);
struct htc_target *ath9k_htc_hw_alloc(void *hif_handle);
void ath9k_htc_hw_free(struct htc_target *htc);
int ath9k_htc_hw_init(struct ath9k_htc_hif *hif, struct htc_target *target,
void *hif_handle, struct device *dev, u16 devid,
enum ath9k_hif_transports transport);
void ath9k_htc_hw_deinit(struct htc_target *target, bool hot_unplug);
#endif /* HTC_HST_H */
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