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
|
/*
* Helper functions for the PM3386s on the Radisys ENP2611
* Copyright (C) 2004, 2005 Lennert Buytenhek <buytenh@wantstofly.org>
* Dedicated to Marija Kulikova.
*
* 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.
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/netdevice.h>
#include <asm/io.h>
#include "pm3386.h"
/*
* Read from register 'reg' of PM3386 device 'pm'.
*/
static u16 pm3386_reg_read(int pm, int reg)
{
void *_reg;
u16 value;
_reg = (void *)ENP2611_PM3386_0_VIRT_BASE;
if (pm == 1)
_reg = (void *)ENP2611_PM3386_1_VIRT_BASE;
value = *((volatile u16 *)(_reg + (reg << 1)));
// printk(KERN_INFO "pm3386_reg_read(%d, %.3x) = %.8x\n", pm, reg, value);
return value;
}
/*
* Write to register 'reg' of PM3386 device 'pm', and perform
* a readback from the identification register.
*/
static void pm3386_reg_write(int pm, int reg, u16 value)
{
void *_reg;
u16 dummy;
// printk(KERN_INFO "pm3386_reg_write(%d, %.3x, %.8x)\n", pm, reg, value);
_reg = (void *)ENP2611_PM3386_0_VIRT_BASE;
if (pm == 1)
_reg = (void *)ENP2611_PM3386_1_VIRT_BASE;
*((volatile u16 *)(_reg + (reg << 1))) = value;
dummy = *((volatile u16 *)_reg);
__asm__ __volatile__("mov %0, %0" : "+r" (dummy));
}
/*
* Read from port 'port' register 'reg', where the registers
* for the different ports are 'spacing' registers apart.
*/
static u16 pm3386_port_reg_read(int port, int _reg, int spacing)
{
int reg;
reg = _reg;
if (port & 1)
reg += spacing;
return pm3386_reg_read(port >> 1, reg);
}
/*
* Write to port 'port' register 'reg', where the registers
* for the different ports are 'spacing' registers apart.
*/
static void pm3386_port_reg_write(int port, int _reg, int spacing, u16 value)
{
int reg;
reg = _reg;
if (port & 1)
reg += spacing;
pm3386_reg_write(port >> 1, reg, value);
}
void pm3386_reset(void)
{
/* @@@ Implement me. */
}
static u16 swaph(u16 x)
{
return ((x << 8) | (x >> 8)) & 0xffff;
}
void pm3386_init_port(int port)
{
int pm = port >> 1;
/*
* Work around ENP2611 bootloader programming MAC address
* in reverse.
*/
if (pm3386_port_reg_read(port, 0x30a, 0x100) == 0x0000 &&
(pm3386_port_reg_read(port, 0x309, 0x100) & 0xff00) == 0x5000) {
u16 temp[3];
temp[0] = pm3386_port_reg_read(port, 0x308, 0x100);
temp[1] = pm3386_port_reg_read(port, 0x309, 0x100);
temp[2] = pm3386_port_reg_read(port, 0x30a, 0x100);
pm3386_port_reg_write(port, 0x308, 0x100, swaph(temp[2]));
pm3386_port_reg_write(port, 0x309, 0x100, swaph(temp[1]));
pm3386_port_reg_write(port, 0x30a, 0x100, swaph(temp[0]));
}
/*
* Initialise narrowbanding mode. See application note 2010486
* for more information. (@@@ We also need to issue a reset
* when ROOL or DOOL are detected.)
*/
pm3386_port_reg_write(port, 0x708, 0x10, 0xd055);
udelay(500);
pm3386_port_reg_write(port, 0x708, 0x10, 0x5055);
/*
* SPI-3 ingress block. Set 64 bytes SPI-3 burst size
* towards SPI-3 bridge.
*/
pm3386_port_reg_write(port, 0x122, 0x20, 0x0002);
/*
* Enable ingress protocol checking, and soft reset the
* SPI-3 ingress block.
*/
pm3386_reg_write(pm, 0x103, 0x0003);
while (!(pm3386_reg_read(pm, 0x103) & 0x80))
;
/*
* SPI-3 egress block. Gather 12288 bytes of the current
* packet in the TX fifo before initiating transmit on the
* SERDES interface. (Prevents TX underflows.)
*/
pm3386_port_reg_write(port, 0x221, 0x20, 0x0007);
/*
* Enforce odd parity from the SPI-3 bridge, and soft reset
* the SPI-3 egress block.
*/
pm3386_reg_write(pm, 0x203, 0x000d & ~(4 << (port & 1)));
while ((pm3386_reg_read(pm, 0x203) & 0x000c) != 0x000c)
;
/*
* EGMAC block. Set this channels to reject long preambles,
* not send or transmit PAUSE frames, enable preamble checking,
* disable frame length checking, enable FCS appending, enable
* TX frame padding.
*/
pm3386_port_reg_write(port, 0x302, 0x100, 0x0113);
/*
* Soft reset the EGMAC block.
*/
pm3386_port_reg_write(port, 0x301, 0x100, 0x8000);
pm3386_port_reg_write(port, 0x301, 0x100, 0x0000);
/*
* Auto-sense autonegotiation status.
*/
pm3386_port_reg_write(port, 0x306, 0x100, 0x0100);
/*
* Allow reception of jumbo frames.
*/
pm3386_port_reg_write(port, 0x310, 0x100, 9018);
/*
* Allow transmission of jumbo frames.
*/
pm3386_port_reg_write(port, 0x336, 0x100, 9018);
/* @@@ Should set 0x337/0x437 (RX forwarding threshold.) */
/*
* Set autonegotiation parameters to 'no PAUSE, full duplex.'
*/
pm3386_port_reg_write(port, 0x31c, 0x100, 0x0020);
/*
* Enable and restart autonegotiation.
*/
pm3386_port_reg_write(port, 0x318, 0x100, 0x0003);
pm3386_port_reg_write(port, 0x318, 0x100, 0x0002);
}
void pm3386_get_mac(int port, u8 *mac)
{
u16 temp;
temp = pm3386_port_reg_read(port, 0x308, 0x100);
mac[0] = temp & 0xff;
mac[1] = (temp >> 8) & 0xff;
temp = pm3386_port_reg_read(port, 0x309, 0x100);
mac[2] = temp & 0xff;
mac[3] = (temp >> 8) & 0xff;
temp = pm3386_port_reg_read(port, 0x30a, 0x100);
mac[4] = temp & 0xff;
mac[5] = (temp >> 8) & 0xff;
}
static u32 pm3386_get_stat(int port, u16 base)
{
u32 value;
value = pm3386_port_reg_read(port, base, 0x100);
value |= pm3386_port_reg_read(port, base + 1, 0x100) << 16;
return value;
}
void pm3386_get_stats(int port, struct net_device_stats *stats)
{
/*
* Snapshot statistics counters.
*/
pm3386_port_reg_write(port, 0x500, 0x100, 0x0001);
while (pm3386_port_reg_read(port, 0x500, 0x100) & 0x0001)
;
memset(stats, 0, sizeof(*stats));
stats->rx_packets = pm3386_get_stat(port, 0x510);
stats->tx_packets = pm3386_get_stat(port, 0x590);
stats->rx_bytes = pm3386_get_stat(port, 0x514);
stats->tx_bytes = pm3386_get_stat(port, 0x594);
/* @@@ Add other stats. */
}
int pm3386_is_link_up(int port)
{
u16 temp;
temp = pm3386_port_reg_read(port, 0x31a, 0x100);
temp = pm3386_port_reg_read(port, 0x31a, 0x100);
return !!(temp & 0x0002);
}
void pm3386_enable_rx(int port)
{
u16 temp;
temp = pm3386_port_reg_read(port, 0x303, 0x100);
temp |= 0x1000;
pm3386_port_reg_write(port, 0x303, 0x100, temp);
}
void pm3386_disable_rx(int port)
{
u16 temp;
temp = pm3386_port_reg_read(port, 0x303, 0x100);
temp &= 0xefff;
pm3386_port_reg_write(port, 0x303, 0x100, temp);
}
void pm3386_enable_tx(int port)
{
u16 temp;
temp = pm3386_port_reg_read(port, 0x303, 0x100);
temp |= 0x4000;
pm3386_port_reg_write(port, 0x303, 0x100, temp);
}
void pm3386_disable_tx(int port)
{
u16 temp;
temp = pm3386_port_reg_read(port, 0x303, 0x100);
temp &= 0xbfff;
pm3386_port_reg_write(port, 0x303, 0x100, temp);
}
MODULE_LICENSE("GPL");
|
