2 * Copyright (c) 2010 Broadcom Corporation
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 /* The level of bus communication with the dongle */
21 enum brcmf_bus_state {
22 BRCMF_BUS_DOWN, /* Not ready for frame transfers */
23 BRCMF_BUS_LOAD, /* Download access only (CPU reset) */
24 BRCMF_BUS_DATA /* Ready for frame transfers */
27 struct brcmf_bus_dcmd {
31 struct list_head list;
35 * struct brcmf_bus_ops - bus callback operations.
37 * @init: prepare for communication with dongle.
38 * @stop: clear pending frames, disable data flow.
39 * @txdata: send a data frame to the dongle (callee disposes skb).
40 * @txctl: transmit a control request message to dongle.
41 * @rxctl: receive a control response message from dongle.
43 * This structure provides an abstract interface towards the
44 * bus specific driver. For control messages to common driver
45 * will assure there is only one active transaction.
47 struct brcmf_bus_ops {
48 int (*init)(struct device *dev);
49 void (*stop)(struct device *dev);
50 int (*txdata)(struct device *dev, struct sk_buff *skb);
51 int (*txctl)(struct device *dev, unsigned char *msg, uint len);
52 int (*rxctl)(struct device *dev, unsigned char *msg, uint len);
56 * struct brcmf_bus - interface structure between common and bus layer
58 * @bus_priv: pointer to private bus device.
59 * @dev: device pointer of bus device.
60 * @drvr: public driver information.
61 * @state: operational state of the bus interface.
62 * @maxctl: maximum size for rxctl request message.
63 * @tx_realloc: number of tx packets realloced for headroom.
64 * @dstats: dongle-based statistical data.
65 * @align: alignment requirement for the bus.
66 * @dcmd_list: bus/device specific dongle initialization commands.
67 * @chip: device identifier of the dongle chip.
68 * @chiprev: revision of the dongle chip.
72 struct brcmf_sdio_dev *sdio;
73 struct brcmf_usbdev *usb;
76 struct brcmf_pub *drvr;
77 enum brcmf_bus_state state;
79 unsigned long tx_realloc;
83 struct list_head dcmd_list;
85 struct brcmf_bus_ops *ops;
91 static inline int brcmf_bus_init(struct brcmf_bus *bus)
93 return bus->ops->init(bus->dev);
96 static inline void brcmf_bus_stop(struct brcmf_bus *bus)
98 bus->ops->stop(bus->dev);
101 static inline int brcmf_bus_txdata(struct brcmf_bus *bus, struct sk_buff *skb)
103 return bus->ops->txdata(bus->dev, skb);
107 int brcmf_bus_txctl(struct brcmf_bus *bus, unsigned char *msg, uint len)
109 return bus->ops->txctl(bus->dev, msg, len);
113 int brcmf_bus_rxctl(struct brcmf_bus *bus, unsigned char *msg, uint len)
115 return bus->ops->rxctl(bus->dev, msg, len);
119 * interface functions from common layer
122 extern bool brcmf_c_prec_enq(struct device *dev, struct pktq *q,
123 struct sk_buff *pkt, int prec);
125 /* Receive frame for delivery to OS. Callee disposes of rxp. */
126 extern void brcmf_rx_frames(struct device *dev, struct sk_buff_head *rxlist);
128 /* Indication from bus module regarding presence/insertion of dongle. */
129 extern int brcmf_attach(uint bus_hdrlen, struct device *dev);
130 /* Indication from bus module regarding removal/absence of dongle */
131 extern void brcmf_detach(struct device *dev);
132 /* Indication from bus module that dongle should be reset */
133 extern void brcmf_dev_reset(struct device *dev);
134 /* Indication from bus module to change flow-control state */
135 extern void brcmf_txflowblock(struct device *dev, bool state);
137 /* Notify tx completion */
138 extern void brcmf_txcomplete(struct device *dev, struct sk_buff *txp,
141 extern int brcmf_bus_start(struct device *dev);
143 #ifdef CONFIG_BRCMFMAC_SDIO
144 extern void brcmf_sdio_exit(void);
145 extern void brcmf_sdio_init(void);
147 #ifdef CONFIG_BRCMFMAC_USB
148 extern void brcmf_usb_exit(void);
149 extern void brcmf_usb_init(void);
152 #endif /* _BRCMF_BUS_H_ */