tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
3 * All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * File: desc.h
20 *
21 * Purpose:The header file of descriptor
22 *
23 * Revision History:
24 *
25 * Author: Tevin Chen
26 *
27 * Date: May 21, 1996
28 *
29 */
30
31#ifndef __DESC_H__
32#define __DESC_H__
33
34#include <linux/types.h>
35#include <linux/mm.h>
36#include "linux/ieee80211.h"
37
38#define B_OWNED_BY_CHIP 1
39#define B_OWNED_BY_HOST 0
40
41/* Bits in the RSR register */
42#define RSR_ADDRBROAD 0x80
43#define RSR_ADDRMULTI 0x40
44#define RSR_ADDRUNI 0x00
45#define RSR_IVLDTYP 0x20
46#define RSR_IVLDLEN 0x10 /* invalid len (> 2312 byte) */
47#define RSR_BSSIDOK 0x08
48#define RSR_CRCOK 0x04
49#define RSR_BCNSSIDOK 0x02
50#define RSR_ADDROK 0x01
51
52/* Bits in the new RSR register */
53#define NEWRSR_DECRYPTOK 0x10
54#define NEWRSR_CFPIND 0x08
55#define NEWRSR_HWUTSF 0x04
56#define NEWRSR_BCNHITAID 0x02
57#define NEWRSR_BCNHITAID0 0x01
58
59/* Bits in the TSR0 register */
60#define TSR0_PWRSTS1_2 0xC0
61#define TSR0_PWRSTS7 0x20
62#define TSR0_NCR 0x1F
63
64/* Bits in the TSR1 register */
65#define TSR1_TERR 0x80
66#define TSR1_PWRSTS4_6 0x70
67#define TSR1_RETRYTMO 0x08
68#define TSR1_TMO 0x04
69#define TSR1_PWRSTS3 0x02
70#define ACK_DATA 0x01
71
72/* Bits in the TCR register */
73#define EDMSDU 0x04 /* end of sdu */
74#define TCR_EDP 0x02 /* end of packet */
75#define TCR_STP 0x01 /* start of packet */
76
77/* max transmit or receive buffer size */
78#define CB_MAX_BUF_SIZE 2900U
79 /* NOTE: must be multiple of 4 */
80#define CB_MAX_TX_BUF_SIZE CB_MAX_BUF_SIZE
81#define CB_MAX_RX_BUF_SIZE_NORMAL CB_MAX_BUF_SIZE
82
83#define CB_BEACON_BUF_SIZE 512U
84
85#define CB_MAX_RX_DESC 128
86#define CB_MIN_RX_DESC 16
87#define CB_MAX_TX_DESC 64
88#define CB_MIN_TX_DESC 16
89
90#define CB_MAX_RECEIVED_PACKETS 16
91 /*
92 * limit our receive routine to indicating
93 * this many at a time for 2 reasons:
94 * 1. driver flow control to protocol layer
95 * 2. limit the time used in ISR routine
96 */
97
98#define CB_EXTRA_RD_NUM 32
99#define CB_RD_NUM 32
100#define CB_TD_NUM 32
101
102/*
103 * max number of physical segments in a single NDIS packet. Above this
104 * threshold, the packet is copied into a single physically contiguous buffer
105 */
106#define CB_MAX_SEGMENT 4
107
108#define CB_MIN_MAP_REG_NUM 4
109#define CB_MAX_MAP_REG_NUM CB_MAX_TX_DESC
110
111#define CB_PROTOCOL_RESERVED_SECTION 16
112
113/*
114 * if retrys excess 15 times , tx will abort, and if tx fifo underflow,
115 * tx will fail, we should try to resend it
116 */
117#define CB_MAX_TX_ABORT_RETRY 3
118
119/* WMAC definition FIFO Control */
120#define FIFOCTL_AUTO_FB_1 0x1000
121#define FIFOCTL_AUTO_FB_0 0x0800
122#define FIFOCTL_GRPACK 0x0400
123#define FIFOCTL_11GA 0x0300
124#define FIFOCTL_11GB 0x0200
125#define FIFOCTL_11B 0x0100
126#define FIFOCTL_11A 0x0000
127#define FIFOCTL_RTS 0x0080
128#define FIFOCTL_ISDMA0 0x0040
129#define FIFOCTL_GENINT 0x0020
130#define FIFOCTL_TMOEN 0x0010
131#define FIFOCTL_LRETRY 0x0008
132#define FIFOCTL_CRCDIS 0x0004
133#define FIFOCTL_NEEDACK 0x0002
134#define FIFOCTL_LHEAD 0x0001
135
136/* WMAC definition Frag Control */
137#define FRAGCTL_AES 0x0300
138#define FRAGCTL_TKIP 0x0200
139#define FRAGCTL_LEGACY 0x0100
140#define FRAGCTL_NONENCRYPT 0x0000
141#define FRAGCTL_ENDFRAG 0x0003
142#define FRAGCTL_MIDFRAG 0x0002
143#define FRAGCTL_STAFRAG 0x0001
144#define FRAGCTL_NONFRAG 0x0000
145
146#define TYPE_TXDMA0 0
147#define TYPE_AC0DMA 1
148#define TYPE_ATIMDMA 2
149#define TYPE_SYNCDMA 3
150#define TYPE_MAXTD 2
151
152#define TYPE_BEACONDMA 4
153
154#define TYPE_RXDMA0 0
155#define TYPE_RXDMA1 1
156#define TYPE_MAXRD 2
157
158/* TD_INFO flags control bit */
159#define TD_FLAGS_NETIF_SKB 0x01 /* check if need release skb */
160#define TD_FLAGS_PRIV_SKB 0x02 /* check if called from private skb (hostap) */
161#define TD_FLAGS_PS_RETRY 0x04 /* check if PS STA frame re-transmit */
162
163/*
164 * ref_sk_buff is used for mapping the skb structure between pre-built
165 * driver-obj & running kernel. Since different kernel version (2.4x) may
166 * change skb structure, i.e. pre-built driver-obj may link to older skb that
167 * leads error.
168 */
169
170struct vnt_rd_info {
171 struct sk_buff *skb;
172 dma_addr_t skb_dma;
173};
174
175struct vnt_rdes0 {
176 volatile __le16 res_count;
177#ifdef __BIG_ENDIAN
178 union {
179 volatile u16 f15_reserved;
180 struct {
181 volatile u8 f8_reserved1;
182 volatile u8 owner:1;
183 volatile u8 f7_reserved:7;
184 } __packed;
185 } __packed;
186#else
187 u16 f15_reserved:15;
188 u16 owner:1;
189#endif
190} __packed;
191
192struct vnt_rdes1 {
193 __le16 req_count;
194 u16 reserved;
195} __packed;
196
197/* Rx descriptor*/
198struct vnt_rx_desc {
199 volatile struct vnt_rdes0 rd0;
200 volatile struct vnt_rdes1 rd1;
201 volatile __le32 buff_addr;
202 volatile __le32 next_desc;
203 struct vnt_rx_desc *next __aligned(8);
204 struct vnt_rd_info *rd_info __aligned(8);
205} __packed;
206
207struct vnt_tdes0 {
208 volatile u8 tsr0;
209 volatile u8 tsr1;
210#ifdef __BIG_ENDIAN
211 union {
212 volatile u16 f15_txtime;
213 struct {
214 volatile u8 f8_reserved;
215 volatile u8 owner:1;
216 volatile u8 f7_reserved:7;
217 } __packed;
218 } __packed;
219#else
220 volatile u16 f15_txtime:15;
221 volatile u16 owner:1;
222#endif
223} __packed;
224
225struct vnt_tdes1 {
226 volatile __le16 req_count;
227 volatile u8 tcr;
228 volatile u8 reserved;
229} __packed;
230
231struct vnt_td_info {
232 void *mic_hdr;
233 struct sk_buff *skb;
234 unsigned char *buf;
235 dma_addr_t buf_dma;
236 u16 req_count;
237 u8 flags;
238};
239
240/* transmit descriptor */
241struct vnt_tx_desc {
242 volatile struct vnt_tdes0 td0;
243 volatile struct vnt_tdes1 td1;
244 volatile __le32 buff_addr;
245 volatile __le32 next_desc;
246 struct vnt_tx_desc *next __aligned(8);
247 struct vnt_td_info *td_info __aligned(8);
248} __packed;
249
250/* Length, Service, and Signal fields of Phy for Tx */
251struct vnt_phy_field {
252 u8 signal;
253 u8 service;
254 __le16 len;
255} __packed;
256
257union vnt_phy_field_swap {
258 struct vnt_phy_field field_read;
259 u16 swap[2];
260 u32 field_write;
261};
262
263#endif /* __DESC_H__ */