/drivers/staging/brcm80211/brcmfmac/bcmcdc.h
C++ Header | 98 lines | 50 code | 16 blank | 32 comment | 0 complexity | 8ebd4d2fbf5303c9912fc2e128d24a0a MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
1/*
2 * Copyright (c) 2010 Broadcom Corporation
3 *
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.
7 *
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.
15 */
16#include <linux/if_ether.h>
17
18typedef struct cdc_ioctl {
19 u32 cmd; /* ioctl command value */
20 u32 len; /* lower 16: output buflen; upper 16:
21 input buflen (excludes header) */
22 u32 flags; /* flag defns given below */
23 u32 status; /* status code returned from the device */
24} cdc_ioctl_t;
25
26/* Max valid buffer size that can be sent to the dongle */
27#define CDC_MAX_MSG_SIZE (ETH_FRAME_LEN+ETH_FCS_LEN)
28
29/* len field is divided into input and output buffer lengths */
30#define CDCL_IOC_OUTLEN_MASK 0x0000FFFF /* maximum or expected
31 response length, */
32 /* excluding IOCTL header */
33#define CDCL_IOC_OUTLEN_SHIFT 0
34#define CDCL_IOC_INLEN_MASK 0xFFFF0000 /* input buffer length,
35 excluding IOCTL header */
36#define CDCL_IOC_INLEN_SHIFT 16
37
38/* CDC flag definitions */
39#define CDCF_IOC_ERROR 0x01 /* 0=success, 1=ioctl cmd failed */
40#define CDCF_IOC_SET 0x02 /* 0=get, 1=set cmd */
41#define CDCF_IOC_IF_MASK 0xF000 /* I/F index */
42#define CDCF_IOC_IF_SHIFT 12
43#define CDCF_IOC_ID_MASK 0xFFFF0000 /* used to uniquely id an ioctl
44 req/resp pairing */
45#define CDCF_IOC_ID_SHIFT 16 /* # of bits of shift for ID Mask */
46
47#define CDC_IOC_IF_IDX(flags) \
48 (((flags) & CDCF_IOC_IF_MASK) >> CDCF_IOC_IF_SHIFT)
49#define CDC_IOC_ID(flags) \
50 (((flags) & CDCF_IOC_ID_MASK) >> CDCF_IOC_ID_SHIFT)
51
52#define CDC_GET_IF_IDX(hdr) \
53 ((int)((((hdr)->flags) & CDCF_IOC_IF_MASK) >> CDCF_IOC_IF_SHIFT))
54#define CDC_SET_IF_IDX(hdr, idx) \
55 ((hdr)->flags = (((hdr)->flags & ~CDCF_IOC_IF_MASK) | \
56 ((idx) << CDCF_IOC_IF_SHIFT)))
57
58/*
59 * BDC header
60 *
61 * The BDC header is used on data packets to convey priority across USB.
62 */
63
64#define BDC_HEADER_LEN 4
65
66#define BDC_PROTO_VER 1 /* Protocol version */
67
68#define BDC_FLAG_VER_MASK 0xf0 /* Protocol version mask */
69#define BDC_FLAG_VER_SHIFT 4 /* Protocol version shift */
70
71#define BDC_FLAG__UNUSED 0x03 /* Unassigned */
72#define BDC_FLAG_SUM_GOOD 0x04 /* Dongle has verified good
73 RX checksums */
74#define BDC_FLAG_SUM_NEEDED 0x08 /* Dongle needs to do TX checksums */
75
76#define BDC_PRIORITY_MASK 0x7
77
78#define BDC_FLAG2_FC_FLAG 0x10 /* flag to indicate if pkt contains */
79 /* FLOW CONTROL info only */
80#define BDC_PRIORITY_FC_SHIFT 4 /* flow control info shift */
81
82#define BDC_FLAG2_IF_MASK 0x0f /* APSTA: interface on which the
83 packet was received */
84#define BDC_FLAG2_IF_SHIFT 0
85
86#define BDC_GET_IF_IDX(hdr) \
87 ((int)((((hdr)->flags2) & BDC_FLAG2_IF_MASK) >> BDC_FLAG2_IF_SHIFT))
88#define BDC_SET_IF_IDX(hdr, idx) \
89 ((hdr)->flags2 = (((hdr)->flags2 & ~BDC_FLAG2_IF_MASK) | \
90 ((idx) << BDC_FLAG2_IF_SHIFT)))
91
92struct bdc_header {
93 u8 flags; /* Flags */
94 u8 priority; /* 802.1d Priority 0:2 bits, 4:7 flow
95 control info for usb */
96 u8 flags2;
97 u8 rssi;
98};