1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
|
/* ZD1211 USB-WLAN driver for Linux
*
* Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
* Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _ZD_USB_H
#define _ZD_USB_H
#include <linux/completion.h>
#include <linux/netdevice.h>
#include <linux/spinlock.h>
#include <linux/skbuff.h>
#include <linux/usb.h>
#include "zd_def.h"
#define ZD_USB_TX_HIGH 5
#define ZD_USB_TX_LOW 2
#define ZD_TX_TIMEOUT (HZ * 5)
#define ZD_TX_WATCHDOG_INTERVAL round_jiffies_relative(HZ)
#define ZD_RX_IDLE_INTERVAL round_jiffies_relative(30 * HZ)
enum devicetype {
DEVICE_ZD1211 = 0,
DEVICE_ZD1211B = 1,
DEVICE_INSTALLER = 2,
};
enum endpoints {
EP_CTRL = 0,
EP_DATA_OUT = 1,
EP_DATA_IN = 2,
EP_INT_IN = 3,
EP_REGS_OUT = 4,
};
enum {
USB_MAX_TRANSFER_SIZE = 4096, /* bytes */
/* FIXME: The original driver uses this value. We have to check,
* whether the MAX_TRANSFER_SIZE is sufficient and this needs only be
* used if one combined frame is split over two USB transactions.
*/
USB_MAX_RX_SIZE = 4800, /* bytes */
USB_MAX_IOWRITE16_COUNT = 15,
USB_MAX_IOWRITE32_COUNT = USB_MAX_IOWRITE16_COUNT/2,
USB_MAX_IOREAD16_COUNT = 15,
USB_MAX_IOREAD32_COUNT = USB_MAX_IOREAD16_COUNT/2,
USB_MIN_RFWRITE_BIT_COUNT = 16,
USB_MAX_RFWRITE_BIT_COUNT = 28,
USB_MAX_EP_INT_BUFFER = 64,
USB_ZD1211B_BCD_DEVICE = 0x4810,
};
enum control_requests {
USB_REQ_WRITE_REGS = 0x21,
USB_REQ_READ_REGS = 0x22,
USB_REQ_WRITE_RF = 0x23,
USB_REQ_PROG_FLASH = 0x24,
USB_REQ_EEPROM_START = 0x0128, /* ? request is a byte */
USB_REQ_EEPROM_MID = 0x28,
USB_REQ_EEPROM_END = 0x0228, /* ? request is a byte */
USB_REQ_FIRMWARE_DOWNLOAD = 0x30,
USB_REQ_FIRMWARE_CONFIRM = 0x31,
USB_REQ_FIRMWARE_READ_DATA = 0x32,
};
struct usb_req_read_regs {
__le16 id;
__le16 addr[0];
} __packed;
struct reg_data {
__le16 addr;
__le16 value;
} __packed;
struct usb_req_write_regs {
__le16 id;
struct reg_data reg_writes[0];
} __packed;
enum {
RF_IF_LE = 0x02,
RF_CLK = 0x04,
RF_DATA = 0x08,
};
struct usb_req_rfwrite {
__le16 id;
__le16 value;
/* 1: 3683a */
/* 2: other (default) */
__le16 bits;
/* RF2595: 24 */
__le16 bit_values[0];
/* (ZD_CR203 & ~(RF_IF_LE | RF_CLK | RF_DATA)) | (bit ? RF_DATA : 0) */
} __packed;
/* USB interrupt */
enum usb_int_id {
USB_INT_TYPE = 0x01,
USB_INT_ID_REGS = 0x90,
USB_INT_ID_RETRY_FAILED = 0xa0,
};
enum usb_int_flags {
USB_INT_READ_REGS_EN = 0x01,
};
struct usb_int_header {
u8 type; /* must always be 1 */
u8 id;
} __packed;
struct usb_int_regs {
struct usb_int_header hdr;
struct reg_data regs[0];
} __packed;
struct usb_int_retry_fail {
struct usb_int_header hdr;
u8 new_rate;
u8 _dummy;
u8 addr[ETH_ALEN];
u8 ibss_wakeup_dest;
} __packed;
struct read_regs_int {
struct completion completion;
struct usb_req_read_regs *req;
unsigned int req_count;
/* Stores the USB int structure and contains the USB address of the
* first requested register before request.
*/
u8 buffer[USB_MAX_EP_INT_BUFFER];
int length;
__le16 cr_int_addr;
};
struct zd_ioreq16 {
zd_addr_t addr;
u16 value;
};
struct zd_ioreq32 {
zd_addr_t addr;
u32 value;
};
struct zd_usb_interrupt {
struct read_regs_int read_regs;
spinlock_t lock;
struct urb *urb;
void *buffer;
dma_addr_t buffer_dma;
int interval;
atomic_t read_regs_enabled;
u8 read_regs_int_overridden:1;
};
static inline struct usb_int_regs *get_read_regs(struct zd_usb_interrupt *intr)
{
return (struct usb_int_regs *)intr->read_regs.buffer;
}
#define RX_URBS_COUNT 5
struct zd_usb_rx {
spinlock_t lock;
struct mutex setup_mutex;
struct delayed_work idle_work;
struct tasklet_struct reset_timer_tasklet;
u8 fragment[2 * USB_MAX_RX_SIZE];
unsigned int fragment_length;
unsigned int usb_packet_size;
struct urb **urbs;
int urbs_count;
};
/**
* struct zd_usb_tx - structure used for transmitting frames
* @enabled: atomic enabled flag, indicates whether tx is enabled
* @lock: lock for transmission
* @submitted: anchor for URBs sent to device
* @submitted_urbs: atomic integer that counts the URBs having sent to the
* device, which haven't been completed
* @stopped: indicates whether higher level tx queues are stopped
*/
struct zd_usb_tx {
atomic_t enabled;
spinlock_t lock;
struct delayed_work watchdog_work;
struct sk_buff_head submitted_skbs;
struct usb_anchor submitted;
int submitted_urbs;
u8 stopped:1, watchdog_enabled:1;
};
/* Contains the usb parts. The structure doesn't require a lock because intf
* will not be changed after initialization.
*/
struct zd_usb {
struct zd_usb_interrupt intr;
struct zd_usb_rx rx;
struct zd_usb_tx tx;
struct usb_interface *intf;
struct usb_anchor submitted_cmds;
struct urb *urb_async_waiting;
int cmd_error;
u8 req_buf[64]; /* zd_usb_iowrite16v needs 62 bytes */
u8 is_zd1211b:1, initialized:1, was_running:1, in_async:1;
};
#define zd_usb_dev(usb) (&usb->intf->dev)
static inline struct usb_device *zd_usb_to_usbdev(struct zd_usb *usb)
{
return interface_to_usbdev(usb->intf);
}
static inline struct ieee80211_hw *zd_intf_to_hw(struct usb_interface *intf)
{
return usb_get_intfdata(intf);
}
static inline struct ieee80211_hw *zd_usb_to_hw(struct zd_usb *usb)
{
return zd_intf_to_hw(usb->intf);
}
void zd_usb_init(struct zd_usb *usb, struct ieee80211_hw *hw,
struct usb_interface *intf);
int zd_usb_init_hw(struct zd_usb *usb);
void zd_usb_clear(struct zd_usb *usb);
int zd_usb_scnprint_id(struct zd_usb *usb, char *buffer, size_t size);
void zd_tx_watchdog_enable(struct zd_usb *usb);
void zd_tx_watchdog_disable(struct zd_usb *usb);
int zd_usb_enable_int(struct zd_usb *usb);
void zd_usb_disable_int(struct zd_usb *usb);
int zd_usb_enable_rx(struct zd_usb *usb);
void zd_usb_disable_rx(struct zd_usb *usb);
void zd_usb_reset_rx_idle_timer(struct zd_usb *usb);
void zd_usb_enable_tx(struct zd_usb *usb);
void zd_usb_disable_tx(struct zd_usb *usb);
int zd_usb_tx(struct zd_usb *usb, struct sk_buff *skb);
int zd_usb_ioread16v(struct zd_usb *usb, u16 *values,
const zd_addr_t *addresses, unsigned int count);
static inline int zd_usb_ioread16(struct zd_usb *usb, u16 *value,
const zd_addr_t addr)
{
return zd_usb_ioread16v(usb, value, &addr, 1);
}
void zd_usb_iowrite16v_async_start(struct zd_usb *usb);
int zd_usb_iowrite16v_async_end(struct zd_usb *usb, unsigned int timeout);
int zd_usb_iowrite16v_async(struct zd_usb *usb, const struct zd_ioreq16 *ioreqs,
unsigned int count);
int zd_usb_iowrite16v(struct zd_usb *usb, const struct zd_ioreq16 *ioreqs,
unsigned int count);
int zd_usb_rfwrite(struct zd_usb *usb, u32 value, u8 bits);
int zd_usb_read_fw(struct zd_usb *usb, zd_addr_t addr, u8 *data, u16 len);
extern struct workqueue_struct *zd_workqueue;
#endif /* _ZD_USB_H */
|
