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/*
* Copyright (c) 2010 Broadcom Corporation
*
* 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 _BRCMF_BUS_H_
#define _BRCMF_BUS_H_
/* The level of bus communication with the dongle */
enum brcmf_bus_state {
BRCMF_BUS_DOWN, /* Not ready for frame transfers */
BRCMF_BUS_LOAD, /* Download access only (CPU reset) */
BRCMF_BUS_DATA /* Ready for frame transfers */
};
struct dngl_stats {
unsigned long rx_packets; /* total packets received */
unsigned long tx_packets; /* total packets transmitted */
unsigned long rx_bytes; /* total bytes received */
unsigned long tx_bytes; /* total bytes transmitted */
unsigned long rx_errors; /* bad packets received */
unsigned long tx_errors; /* packet transmit problems */
unsigned long rx_dropped; /* packets dropped by dongle */
unsigned long tx_dropped; /* packets dropped by dongle */
unsigned long multicast; /* multicast packets received */
};
/* interface structure between common and bus layer */
struct brcmf_bus {
u8 type; /* bus type */
void *bus_priv; /* pointer to bus private structure */
void *drvr; /* pointer to driver pub structure brcmf_pub */
enum brcmf_bus_state state;
uint maxctl; /* Max size rxctl request from proto to bus */
bool drvr_up; /* Status flag of driver up/down */
unsigned long tx_realloc; /* Tx packets realloced for headroom */
struct dngl_stats dstats; /* Stats for dongle-based data */
u8 align; /* bus alignment requirement */
/* interface functions pointers */
/* Stop bus module: clear pending frames, disable data flow */
void (*brcmf_bus_stop)(struct device *);
/* Initialize bus module: prepare for communication w/dongle */
int (*brcmf_bus_init)(struct device *);
/* Send a data frame to the dongle. Callee disposes of txp. */
int (*brcmf_bus_txdata)(struct device *, struct sk_buff *);
/* Send/receive a control message to/from the dongle.
* Expects caller to enforce a single outstanding transaction.
*/
int (*brcmf_bus_txctl)(struct device *, unsigned char *, uint);
int (*brcmf_bus_rxctl)(struct device *, unsigned char *, uint);
};
/*
* interface functions from common layer
*/
/* Remove any protocol-specific data header. */
extern int brcmf_proto_hdrpull(struct device *dev, int *ifidx,
struct sk_buff *rxp);
extern bool brcmf_c_prec_enq(struct device *dev, struct pktq *q,
struct sk_buff *pkt, int prec);
/* Receive frame for delivery to OS. Callee disposes of rxp. */
extern void brcmf_rx_frame(struct device *dev, int ifidx,
struct sk_buff_head *rxlist);
static inline void brcmf_rx_packet(struct device *dev, int ifidx,
struct sk_buff *pkt)
{
struct sk_buff_head q;
skb_queue_head_init(&q);
skb_queue_tail(&q, pkt);
brcmf_rx_frame(dev, ifidx, &q);
}
/* Indication from bus module regarding presence/insertion of dongle. */
extern int brcmf_attach(uint bus_hdrlen, struct device *dev);
/* Indication from bus module regarding removal/absence of dongle */
extern void brcmf_detach(struct device *dev);
/* Indication from bus module to change flow-control state */
extern void brcmf_txflowcontrol(struct device *dev, int ifidx, bool on);
/* Notify tx completion */
extern void brcmf_txcomplete(struct device *dev, struct sk_buff *txp,
bool success);
extern int brcmf_bus_start(struct device *dev);
extern int brcmf_add_if(struct device *dev, int ifidx,
char *name, u8 *mac_addr);
#endif /* _BRCMF_BUS_H_ */
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