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
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
|
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Copyright (c) 2004, 2005 David Young. All rights reserved.
*
* Programmed for NetBSD by David Young.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of David Young may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY David Young ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL David
* Young BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
/*
* Control input/output with the Philips SA2400 RF front-end and
* the baseband processor built into the Realtek RTL8180.
*/
#include <sys/types.h>
#include <sys/sysmacros.h>
#include "rtwreg.h"
#include "max2820reg.h"
#include "sa2400reg.h"
#include "si4136reg.h"
#include "rtwvar.h"
#include "rtwphyio.h"
#include "rtwphy.h"
static int rtw_macbangbits_timeout = 100;
uint8_t
rtw_bbp_read(struct rtw_regs *regs, uint_t addr)
{
RTW_WRITE(regs, RTW_BB,
LSHIFT(addr, RTW_BB_ADDR_MASK) | RTW_BB_RD_MASK | RTW_BB_WR_MASK);
DELAY(10);
RTW_WBR(regs, RTW_BB, RTW_BB);
return (MASK_AND_RSHIFT(RTW_READ(regs, RTW_BB), RTW_BB_RD_MASK));
}
int
rtw_bbp_write(struct rtw_regs *regs, uint_t addr, uint_t val)
{
#define BBP_WRITE_ITERS 50
#define BBP_WRITE_DELAY 1
int i;
uint32_t wrbbp, rdbbp;
RTW_DPRINTF(RTW_DEBUG_PHYIO,
"%s: bbp[%u] <- %u\n", __func__, addr, val);
wrbbp = LSHIFT(addr, RTW_BB_ADDR_MASK) | RTW_BB_WREN |
LSHIFT(val, RTW_BB_WR_MASK) | RTW_BB_RD_MASK,
rdbbp = LSHIFT(addr, RTW_BB_ADDR_MASK) |
RTW_BB_WR_MASK | RTW_BB_RD_MASK;
RTW_DPRINTF(RTW_DEBUG_PHYIO,
"%s: rdbbp = %08x, wrbbp = %08x\n", __func__, rdbbp, wrbbp);
for (i = BBP_WRITE_ITERS; --i >= 0; ) {
RTW_RBW(regs, RTW_BB, RTW_BB);
RTW_WRITE(regs, RTW_BB, wrbbp);
RTW_SYNC(regs, RTW_BB, RTW_BB);
RTW_WRITE(regs, RTW_BB, rdbbp);
RTW_SYNC(regs, RTW_BB, RTW_BB);
DELAY(BBP_WRITE_DELAY); /* 1 microsecond */
if (MASK_AND_RSHIFT(RTW_READ(regs, RTW_BB),
RTW_BB_RD_MASK) == val) {
RTW_DPRINTF(RTW_DEBUG_PHYIO,
"%s: finished in %dus\n", __func__,
BBP_WRITE_DELAY * (BBP_WRITE_ITERS - i));
return (0);
}
DELAY(BBP_WRITE_DELAY); /* again */
}
cmn_err(CE_NOTE, "%s: timeout\n", __func__);
return (-1);
}
/*
* Help rtw_rf_hostwrite bang bits to RF over 3-wire interface.
*/
static void
rtw_rf_hostbangbits(struct rtw_regs *regs, uint32_t bits, int lo_to_hi,
uint_t nbits)
{
int i;
uint32_t mask, reg;
RTW_DPRINTF(RTW_DEBUG_PHYIO,
"%s: %u bits, %08x, %s\n", __func__, nbits, bits,
(lo_to_hi) ? "lo to hi" : "hi to lo");
reg = RTW_PHYCFG_HST;
RTW_WRITE(regs, RTW_PHYCFG, reg);
RTW_SYNC(regs, RTW_PHYCFG, RTW_PHYCFG);
if (lo_to_hi)
mask = 0x1;
else
mask = 1 << (nbits - 1);
for (i = 0; i < nbits; i++) {
RTW_DPRINTF(RTW_DEBUG_PHYBITIO,
"%s: bits %08x mask %08x -> bit %08x\n",
__func__, bits, mask, bits & mask);
if ((bits & mask) != 0)
reg |= RTW_PHYCFG_HST_DATA;
else
reg &= ~RTW_PHYCFG_HST_DATA;
reg |= RTW_PHYCFG_HST_CLK;
RTW_WRITE(regs, RTW_PHYCFG, reg);
RTW_SYNC(regs, RTW_PHYCFG, RTW_PHYCFG);
DELAY(2); /* arbitrary delay */
reg &= ~RTW_PHYCFG_HST_CLK;
RTW_WRITE(regs, RTW_PHYCFG, reg);
RTW_SYNC(regs, RTW_PHYCFG, RTW_PHYCFG);
if (lo_to_hi)
mask <<= 1;
else
mask >>= 1;
}
reg |= RTW_PHYCFG_HST_EN;
RTW_WRITE(regs, RTW_PHYCFG, reg);
RTW_SYNC(regs, RTW_PHYCFG, RTW_PHYCFG);
}
/*
* Help rtw_rf_macwrite: tell MAC to bang bits to RF over the 3-wire
* interface.
*/
static int
rtw_rf_macbangbits(struct rtw_regs *regs, uint32_t reg)
{
int i;
RTW_DPRINTF(RTW_DEBUG_PHY, "%s: %08x\n", __func__, reg);
RTW_WRITE(regs, RTW_PHYCFG, RTW_PHYCFG_MAC_POLL | reg);
RTW_WBR(regs, RTW_PHYCFG, RTW_PHYCFG);
for (i = rtw_macbangbits_timeout; --i >= 0; DELAY(1)) {
if ((RTW_READ(regs, RTW_PHYCFG) & RTW_PHYCFG_MAC_POLL) == 0) {
RTW_DPRINTF(RTW_DEBUG_PHY,
"%s: finished in %dus\n", __func__,
rtw_macbangbits_timeout - i);
return (0);
}
RTW_RBR(regs, RTW_PHYCFG, RTW_PHYCFG); /* paranoia? */
}
cmn_err(CE_NOTE, "%s: RTW_PHYCFG_MAC_POLL still set.\n", __func__);
return (-1);
}
/*ARGSUSED*/
static uint32_t
rtw_grf5101_host_crypt(uint_t addr, uint32_t val)
{
/* TBD */
return (0);
}
static uint32_t
rtw_grf5101_mac_crypt(uint_t addr, uint32_t val)
{
uint32_t data_and_addr;
#define EXTRACT_NIBBLE(d, which) (((d) >> (4 * (which))) & 0xf)
static uint8_t caesar[16] =
{
0x0, 0x8, 0x4, 0xc, 0x2, 0xa, 0x6, 0xe,
0x1, 0x9, 0x5, 0xd, 0x3, 0xb, 0x7, 0xf
};
data_and_addr = caesar[EXTRACT_NIBBLE(val, 2)] |
(caesar[EXTRACT_NIBBLE(val, 1)] << 4) |
(caesar[EXTRACT_NIBBLE(val, 0)] << 8) |
(caesar[(addr >> 1) & 0xf] << 12) |
((addr & 0x1) << 16) |
(caesar[EXTRACT_NIBBLE(val, 3)] << 24);
return (LSHIFT(data_and_addr, RTW_PHYCFG_MAC_PHILIPS_ADDR_MASK |
RTW_PHYCFG_MAC_PHILIPS_DATA_MASK));
#undef EXTRACT_NIBBLE
}
static const char *
rtw_rfchipid_string(enum rtw_rfchipid rfchipid)
{
switch (rfchipid) {
case RTW_RFCHIPID_MAXIM:
return ("Maxim");
case RTW_RFCHIPID_PHILIPS:
return ("Philips");
case RTW_RFCHIPID_GCT:
return ("GCT");
case RTW_RFCHIPID_RFMD:
return ("RFMD");
case RTW_RFCHIPID_INTERSIL:
return ("Intersil");
default:
return ("unknown");
}
}
/*
* Bang bits over the 3-wire interface.
*/
int
rtw_rf_hostwrite(struct rtw_regs *regs, enum rtw_rfchipid rfchipid,
uint_t addr, uint32_t val)
{
uint_t nbits;
int lo_to_hi;
uint32_t bits;
RTW_DPRINTF(RTW_DEBUG_PHYIO, "%s: %s[%u] <- %08x\n", __func__,
rtw_rfchipid_string(rfchipid), addr, val);
switch (rfchipid) {
case RTW_RFCHIPID_MAXIM:
nbits = 16;
lo_to_hi = 0;
bits = LSHIFT(val, MAX2820_TWI_DATA_MASK) |
LSHIFT(addr, MAX2820_TWI_ADDR_MASK);
break;
case RTW_RFCHIPID_PHILIPS:
bits = LSHIFT(val, SA2400_TWI_DATA_MASK) |
LSHIFT(addr, SA2400_TWI_ADDR_MASK) | SA2400_TWI_WREN;
nbits = 32;
lo_to_hi = 1;
break;
case RTW_RFCHIPID_GCT:
case RTW_RFCHIPID_RFMD:
if (rfchipid == RTW_RFCHIPID_GCT)
bits = rtw_grf5101_host_crypt(addr, val);
else {
bits = LSHIFT(val, SI4126_TWI_DATA_MASK) |
LSHIFT(addr, SI4126_TWI_ADDR_MASK);
}
nbits = 22;
lo_to_hi = 0;
break;
case RTW_RFCHIPID_INTERSIL:
default:
cmn_err(CE_WARN, "%s: unknown rfchipid %d\n",
__func__, rfchipid);
return (-1);
}
rtw_rf_hostbangbits(regs, bits, lo_to_hi, nbits);
return (0);
}
static uint32_t
rtw_maxim_swizzle(uint_t addr, uint32_t val)
{
uint32_t hidata, lodata;
lodata = MASK_AND_RSHIFT(val, RTW_MAXIM_LODATA_MASK);
hidata = MASK_AND_RSHIFT(val, RTW_MAXIM_HIDATA_MASK);
return (LSHIFT(lodata, RTW_PHYCFG_MAC_MAXIM_LODATA_MASK) |
LSHIFT(hidata, RTW_PHYCFG_MAC_MAXIM_HIDATA_MASK) |
LSHIFT(addr, RTW_PHYCFG_MAC_MAXIM_ADDR_MASK));
}
/*
* Tell the MAC what to bang over the 3-wire interface.
*/
int
rtw_rf_macwrite(struct rtw_regs *regs, enum rtw_rfchipid rfchipid,
uint_t addr, uint32_t val)
{
uint32_t reg;
RTW_DPRINTF(RTW_DEBUG_PHYIO, "%s: %s[%u] <- %08x\n", __func__,
rtw_rfchipid_string(rfchipid), addr, val);
switch (rfchipid) {
case RTW_RFCHIPID_GCT:
reg = rtw_grf5101_mac_crypt(addr, val);
break;
case RTW_RFCHIPID_MAXIM:
reg = rtw_maxim_swizzle(addr, val);
break;
default:
case RTW_RFCHIPID_PHILIPS:
reg = LSHIFT(addr, RTW_PHYCFG_MAC_PHILIPS_ADDR_MASK) |
LSHIFT(val, RTW_PHYCFG_MAC_PHILIPS_DATA_MASK);
}
switch (rfchipid) {
case RTW_RFCHIPID_GCT:
case RTW_RFCHIPID_MAXIM:
case RTW_RFCHIPID_RFMD:
reg |= RTW_PHYCFG_MAC_RFTYPE_RFMD;
break;
case RTW_RFCHIPID_INTERSIL:
reg |= RTW_PHYCFG_MAC_RFTYPE_INTERSIL;
break;
case RTW_RFCHIPID_PHILIPS:
reg |= RTW_PHYCFG_MAC_RFTYPE_PHILIPS;
break;
default:
cmn_err(CE_WARN, "%s: unknown rfchipid %d\n",
__func__, rfchipid);
return (-1);
}
return (rtw_rf_macbangbits(regs, reg));
}
|
