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
|
/*
This files contains MAXIM MAX2820 radio frontend programming routines.
This is part of rtl8180 OpenSource driver
Copyright (C) Andrea Merello 2004-2005 <andreamrl@tiscali.it>
Released under the terms of GPL (General Public Licence)
Parts of this driver are based on the GPL part of the
official realtek driver
Parts of this driver are based on the rtl8180 driver skeleton
from Patric Schenke & Andres Salomon
Parts of this driver are based on the Intel Pro Wireless 2100 GPL driver.
NetBSD rtl8180 driver from Dave Young has been really useful to
understand how to program the MAXIM radio. Thanks a lot!!!
'The Deuce' tested this and fixed some bugs.
Code from rtl8181 project has been useful to me to understand some things.
We want to tanks the Authors of such projects and the Ndiswrapper
project Authors.
*/
#include "r8180.h"
#include "r8180_hw.h"
#include "r8180_max2820.h"
//#define DEBUG_MAXIM
u32 maxim_chan[] = {
0, //dummy channel 0
12, //1
17, //2
22, //3
27, //4
32, //5
37, //6
42, //7
47, //8
52, //9
57, //10
62, //11
67, //12
72, //13
84, //14
};
#if 0
/* maxim expects 4 bit address MSF, then 12 bit data MSF*/
void write_maxim(struct net_device *dev,u8 adr, u32 data)
{
int shift;
short bit;
u16 word;
adr = adr &0xf;
word = (u16)data & 0xfff;
word |= (adr<<12);
/*write_nic_dword(dev,PHY_CONFIG,BB_HOST_BANG | BB_HOST_BANG_EN);
read_nic_dword(dev,PHY_CONFIG);
mdelay(1);
write_nic_dword(dev,PHY_CONFIG,BB_HOST_BANG | BB_HOST_BANG_EN | BB_HOST_BANG_CLK);
read_nic_dword(dev,PHY_CONFIG);
mdelay(1);
*/
/* MAX2820 will sample data on rising edge of clock */
for(shift = 15;shift >=0; shift--){
bit = word>>shift & 1;
write_nic_dword(dev,PHY_CONFIG,BB_HOST_BANG | (bit<<BB_HOST_BANG_DATA));
read_nic_dword(dev,PHY_CONFIG);
mdelay(2);
write_nic_dword(dev,PHY_CONFIG,BB_HOST_BANG |
(bit<<BB_HOST_BANG_DATA) | BB_HOST_BANG_CLK); /* sample data */
read_nic_dword(dev,PHY_CONFIG);
mdelay(1);
write_nic_dword(dev,PHY_CONFIG,BB_HOST_BANG |
(bit<<BB_HOST_BANG_DATA));
read_nic_dword(dev,PHY_CONFIG);
mdelay(2);
}
write_nic_dword(dev,PHY_CONFIG,BB_HOST_BANG | (bit<<BB_HOST_BANG_DATA)|
BB_HOST_BANG_EN);
read_nic_dword(dev,PHY_CONFIG);
mdelay(2);
/* The shift register fill flush to the requested register the
* last 12 bits data shifted in
*/
write_nic_dword(dev,PHY_CONFIG,BB_HOST_BANG | (bit<<BB_HOST_BANG_DATA)|
BB_HOST_BANG_EN | BB_HOST_BANG_CLK);
read_nic_dword(dev,PHY_CONFIG);
mdelay(2);
write_nic_dword(dev,PHY_CONFIG,BB_HOST_BANG | (bit<<BB_HOST_BANG_DATA)|
BB_HOST_BANG_EN);
read_nic_dword(dev,PHY_CONFIG);
mdelay(2);
#ifdef DEBUG_MAXIM
DMESG("Writing maxim: %x (adr %x)",phy_config,adr);
#endif
}
#endif
void write_maxim(struct net_device *dev,u8 adr, u32 data) {
u32 temp;
temp = 0x90 + (data & 0xf);
temp <<= 16;
temp += adr;
temp <<= 8;
temp += (data >> 4) & 0xff;
#ifdef DEBUG_MAXIM
DMESG("write_maxim: %08x", temp);
#endif
write_nic_dword(dev, PHY_CONFIG, temp);
force_pci_posting(dev);
mdelay(1);
}
void maxim_write_phy_antenna(struct net_device *dev,short ch)
{
struct r8180_priv *priv = ieee80211_priv(dev);
u8 ant;
ant = MAXIM_ANTENNA;
if(priv->antb) /*default antenna is antenna B */
ant |= BB_ANTENNA_B;
if(ch == 14)
ant |= BB_ANTATTEN_CHAN14;
write_phy(dev,0x10,ant);
//DMESG("BB antenna %x ",ant);
}
void maxim_rf_set_chan(struct net_device *dev, short ch)
{
struct r8180_priv *priv = ieee80211_priv(dev);
u32 txpw = 0xff & priv->chtxpwr[ch];
u32 chan = maxim_chan[ch];
/*While philips SA2400 drive the PA bias
*seems that for MAXIM we delegate this
*to the BB
*/
//write_maxim(dev,5,txpw);
write_phy(dev,3,txpw);
maxim_write_phy_antenna(dev,ch);
write_maxim(dev,3,chan);
}
void maxim_rf_close(struct net_device *dev)
{
write_phy(dev, 3, 0x8);
write_maxim(dev, 1, 0);
}
void maxim_rf_init(struct net_device *dev)
{
struct r8180_priv *priv = ieee80211_priv(dev);
u32 anaparam;
write_nic_byte(dev,PHY_DELAY,0x6); //this is general
write_nic_byte(dev,CARRIER_SENSE_COUNTER,0x4c); //this is general
/*these are maxim specific*/
anaparam = read_nic_dword(dev,ANAPARAM);
anaparam = anaparam &~ (ANAPARAM_TXDACOFF_SHIFT);
anaparam = anaparam &~ANAPARAM_PWR1_MASK;
anaparam = anaparam &~ANAPARAM_PWR0_MASK;
anaparam |= (MAXIM_ANAPARAM_PWR1_ON<<ANAPARAM_PWR1_SHIFT);
anaparam |= (MAXIM_ANAPARAM_PWR0_ON<<ANAPARAM_PWR0_SHIFT);
//rtl8180_set_anaparam(dev,anaparam);
/* MAXIM from netbsd driver */
write_maxim(dev,0, 7); /* test mode as indicated in datasheet*/
write_maxim(dev,1, 0x1e); /* enable register*/
write_maxim(dev,2, 1); /* synt register */
maxim_rf_set_chan(dev,priv->chan);
write_maxim(dev,4, 0x313); /* rx register*/
/* PA is driven directly by the BB, we keep the MAXIM bias
* at the highest value in the boubt tha pleacing it to lower
* values may introduce some further attenuation somewhere..
*/
write_maxim(dev,5, 0xf);
/*baseband configuration*/
write_phy(dev,0,0x88); //sys1
write_phy(dev,3,0x8); //txagc
write_phy(dev,4,0xf8); // lnadet
write_phy(dev,5,0x90); // ifagcinit
write_phy(dev,6,0x1a); // ifagclimit
write_phy(dev,7,0x64); // ifagcdet
/*Should be done something more here??*/
maxim_write_phy_antenna(dev,priv->chan);
write_phy(dev,0x11,0x88); //trl
if(priv->diversity)
write_phy(dev,0x12,0xc7);
else
write_phy(dev,0x12,0x47);
write_phy(dev,0x13,0x9b);
write_phy(dev,0x19,0x0); //CHESTLIM
write_phy(dev,0x1a,0x9f); //CHSQLIM
maxim_rf_set_chan(dev,priv->chan);
}
|
