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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.
*/
#include <linux/if_ether.h>
typedef struct cdc_ioctl {
u32 cmd; /* ioctl command value */
u32 len; /* lower 16: output buflen; upper 16:
input buflen (excludes header) */
u32 flags; /* flag defns given below */
u32 status; /* status code returned from the device */
} cdc_ioctl_t;
/* Max valid buffer size that can be sent to the dongle */
#define CDC_MAX_MSG_SIZE (ETH_FRAME_LEN+ETH_FCS_LEN)
/* len field is divided into input and output buffer lengths */
#define CDCL_IOC_OUTLEN_MASK 0x0000FFFF /* maximum or expected
response length, */
/* excluding IOCTL header */
#define CDCL_IOC_OUTLEN_SHIFT 0
#define CDCL_IOC_INLEN_MASK 0xFFFF0000 /* input buffer length,
excluding IOCTL header */
#define CDCL_IOC_INLEN_SHIFT 16
/* CDC flag definitions */
#define CDCF_IOC_ERROR 0x01 /* 0=success, 1=ioctl cmd failed */
#define CDCF_IOC_SET 0x02 /* 0=get, 1=set cmd */
#define CDCF_IOC_IF_MASK 0xF000 /* I/F index */
#define CDCF_IOC_IF_SHIFT 12
#define CDCF_IOC_ID_MASK 0xFFFF0000 /* used to uniquely id an ioctl
req/resp pairing */
#define CDCF_IOC_ID_SHIFT 16 /* # of bits of shift for ID Mask */
#define CDC_IOC_IF_IDX(flags) \
(((flags) & CDCF_IOC_IF_MASK) >> CDCF_IOC_IF_SHIFT)
#define CDC_IOC_ID(flags) \
(((flags) & CDCF_IOC_ID_MASK) >> CDCF_IOC_ID_SHIFT)
#define CDC_GET_IF_IDX(hdr) \
((int)((((hdr)->flags) & CDCF_IOC_IF_MASK) >> CDCF_IOC_IF_SHIFT))
#define CDC_SET_IF_IDX(hdr, idx) \
((hdr)->flags = (((hdr)->flags & ~CDCF_IOC_IF_MASK) | \
((idx) << CDCF_IOC_IF_SHIFT)))
/*
* BDC header
*
* The BDC header is used on data packets to convey priority across USB.
*/
#define BDC_HEADER_LEN 4
#define BDC_PROTO_VER 1 /* Protocol version */
#define BDC_FLAG_VER_MASK 0xf0 /* Protocol version mask */
#define BDC_FLAG_VER_SHIFT 4 /* Protocol version shift */
#define BDC_FLAG__UNUSED 0x03 /* Unassigned */
#define BDC_FLAG_SUM_GOOD 0x04 /* Dongle has verified good
RX checksums */
#define BDC_FLAG_SUM_NEEDED 0x08 /* Dongle needs to do TX checksums */
#define BDC_PRIORITY_MASK 0x7
#define BDC_FLAG2_FC_FLAG 0x10 /* flag to indicate if pkt contains */
/* FLOW CONTROL info only */
#define BDC_PRIORITY_FC_SHIFT 4 /* flow control info shift */
#define BDC_FLAG2_IF_MASK 0x0f /* APSTA: interface on which the
packet was received */
#define BDC_FLAG2_IF_SHIFT 0
#define BDC_GET_IF_IDX(hdr) \
((int)((((hdr)->flags2) & BDC_FLAG2_IF_MASK) >> BDC_FLAG2_IF_SHIFT))
#define BDC_SET_IF_IDX(hdr, idx) \
((hdr)->flags2 = (((hdr)->flags2 & ~BDC_FLAG2_IF_MASK) | \
((idx) << BDC_FLAG2_IF_SHIFT)))
struct bdc_header {
u8 flags; /* Flags */
u8 priority; /* 802.1d Priority 0:2 bits, 4:7 flow
control info for usb */
u8 flags2;
u8 rssi;
};
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