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
|
/*
* Intel i82586 Ethernet definitions
*
* This is an extension to the Linux operating system, and is covered by the
* same GNU General Public License that covers that work.
*
* copyrights (c) 1994 by Michael Hipp (hippm@informatik.uni-tuebingen.de)
*
* I have done a look in the following sources:
* crynwr-packet-driver by Russ Nelson
* Garret A. Wollman's i82586-driver for BSD
*/
#define NI52_RESET 0 /* writing to this address, resets the i82586 */
#define NI52_ATTENTION 1 /* channel attention, kick the 586 */
#define NI52_TENA 3 /* 2-5 possibly wrong, Xmit enable */
#define NI52_TDIS 2 /* Xmit disable */
#define NI52_INTENA 5 /* Interrupt enable */
#define NI52_INTDIS 4 /* Interrupt disable */
#define NI52_MAGIC1 6 /* dunno exact function */
#define NI52_MAGIC2 7 /* dunno exact function */
#define NI52_MAGICVAL1 0x00 /* magic-values for ni5210 card */
#define NI52_MAGICVAL2 0x55
/*
* where to find the System Configuration Pointer (SCP)
*/
#define SCP_DEFAULT_ADDRESS 0xfffff4
/*
* System Configuration Pointer Struct
*/
struct scp_struct
{
u16 zero_dum0; /* has to be zero */
u8 sysbus; /* 0=16Bit,1=8Bit */
u8 zero_dum1; /* has to be zero for 586 */
u8 zero_dum2;
u8 zero_dum3;
u32 iscp; /* pointer to the iscp-block */
};
/*
* Intermediate System Configuration Pointer (ISCP)
*/
struct iscp_struct
{
u8 busy; /* 586 clears after successful init */
u8 zero_dummy; /* has to be zero */
u16 scb_offset; /* pointeroffset to the scb_base */
u32 scb_base; /* base-address of all 16-bit offsets */
};
/*
* System Control Block (SCB)
*/
struct scb_struct
{
u8 rus;
u8 cus;
u8 cmd_ruc; /* command word: RU part */
u8 cmd_cuc; /* command word: CU part & ACK */
u16 cbl_offset; /* pointeroffset, command block list */
u16 rfa_offset; /* pointeroffset, receive frame area */
u16 crc_errs; /* CRC-Error counter */
u16 aln_errs; /* alignmenterror counter */
u16 rsc_errs; /* Resourceerror counter */
u16 ovrn_errs; /* OVerrunerror counter */
};
/*
* possible command values for the command word
*/
#define RUC_MASK 0x0070 /* mask for RU commands */
#define RUC_NOP 0x0000 /* NOP-command */
#define RUC_START 0x0010 /* start RU */
#define RUC_RESUME 0x0020 /* resume RU after suspend */
#define RUC_SUSPEND 0x0030 /* suspend RU */
#define RUC_ABORT 0x0040 /* abort receiver operation immediately */
#define CUC_MASK 0x07 /* mask for CU command */
#define CUC_NOP 0x00 /* NOP-command */
#define CUC_START 0x01 /* start execution of 1. cmd on the CBL */
#define CUC_RESUME 0x02 /* resume after suspend */
#define CUC_SUSPEND 0x03 /* Suspend CU */
#define CUC_ABORT 0x04 /* abort command operation immediately */
#define ACK_MASK 0xf0 /* mask for ACK command */
#define ACK_CX 0x80 /* acknowledges STAT_CX */
#define ACK_FR 0x40 /* ack. STAT_FR */
#define ACK_CNA 0x20 /* ack. STAT_CNA */
#define ACK_RNR 0x10 /* ack. STAT_RNR */
/*
* possible status values for the status word
*/
#define STAT_MASK 0xf0 /* mask for cause of interrupt */
#define STAT_CX 0x80 /* CU finished cmd with its I bit set */
#define STAT_FR 0x40 /* RU finished receiving a frame */
#define STAT_CNA 0x20 /* CU left active state */
#define STAT_RNR 0x10 /* RU left ready state */
#define CU_STATUS 0x7 /* CU status, 0=idle */
#define CU_SUSPEND 0x1 /* CU is suspended */
#define CU_ACTIVE 0x2 /* CU is active */
#define RU_STATUS 0x70 /* RU status, 0=idle */
#define RU_SUSPEND 0x10 /* RU suspended */
#define RU_NOSPACE 0x20 /* RU no resources */
#define RU_READY 0x40 /* RU is ready */
/*
* Receive Frame Descriptor (RFD)
*/
struct rfd_struct
{
u8 stat_low; /* status word */
u8 stat_high; /* status word */
u8 rfd_sf; /* 82596 mode only */
u8 last; /* Bit15,Last Frame on List / Bit14,suspend */
u16 next; /* linkoffset to next RFD */
u16 rbd_offset; /* pointeroffset to RBD-buffer */
u8 dest[6]; /* ethernet-address, destination */
u8 source[6]; /* ethernet-address, source */
u16 length; /* 802.3 frame-length */
u16 zero_dummy; /* dummy */
};
#define RFD_LAST 0x80 /* last: last rfd in the list */
#define RFD_SUSP 0x40 /* last: suspend RU after */
#define RFD_COMPL 0x80
#define RFD_OK 0x20
#define RFD_BUSY 0x40
#define RFD_ERR_LEN 0x10 /* Length error (if enabled length-checking */
#define RFD_ERR_CRC 0x08 /* CRC error */
#define RFD_ERR_ALGN 0x04 /* Alignment error */
#define RFD_ERR_RNR 0x02 /* status: receiver out of resources */
#define RFD_ERR_OVR 0x01 /* DMA Overrun! */
#define RFD_ERR_FTS 0x0080 /* Frame to short */
#define RFD_ERR_NEOP 0x0040 /* No EOP flag (for bitstuffing only) */
#define RFD_ERR_TRUN 0x0020 /* (82596 only/SF mode) indicates truncated frame */
#define RFD_MATCHADD 0x0002 /* status: Destinationaddress !matches IA (only 82596) */
#define RFD_COLLDET 0x0001 /* Detected collision during reception */
/*
* Receive Buffer Descriptor (RBD)
*/
struct rbd_struct
{
u16 status; /* status word,number of used bytes in buff */
u16 next; /* pointeroffset to next RBD */
u32 buffer; /* receive buffer address pointer */
u16 size; /* size of this buffer */
u16 zero_dummy; /* dummy */
};
#define RBD_LAST 0x8000 /* last buffer */
#define RBD_USED 0x4000 /* this buffer has data */
#define RBD_MASK 0x3fff /* size-mask for length */
/*
* Statusvalues for Commands/RFD
*/
#define STAT_COMPL 0x8000 /* status: frame/command is complete */
#define STAT_BUSY 0x4000 /* status: frame/command is busy */
#define STAT_OK 0x2000 /* status: frame/command is ok */
/*
* Action-Commands
*/
#define CMD_NOP 0x0000 /* NOP */
#define CMD_IASETUP 0x0001 /* initial address setup command */
#define CMD_CONFIGURE 0x0002 /* configure command */
#define CMD_MCSETUP 0x0003 /* MC setup command */
#define CMD_XMIT 0x0004 /* transmit command */
#define CMD_TDR 0x0005 /* time domain reflectometer (TDR) command */
#define CMD_DUMP 0x0006 /* dump command */
#define CMD_DIAGNOSE 0x0007 /* diagnose command */
/*
* Action command bits
*/
#define CMD_LAST 0x8000 /* indicates last command in the CBL */
#define CMD_SUSPEND 0x4000 /* suspend CU after this CB */
#define CMD_INT 0x2000 /* generate interrupt after execution */
/*
* NOP - command
*/
struct nop_cmd_struct
{
u16 cmd_status; /* status of this command */
u16 cmd_cmd; /* the command itself (+bits) */
u16 cmd_link; /* offsetpointer to next command */
};
/*
* IA Setup command
*/
struct iasetup_cmd_struct
{
u16 cmd_status;
u16 cmd_cmd;
u16 cmd_link;
u8 iaddr[6];
};
/*
* Configure command
*/
struct configure_cmd_struct
{
u16 cmd_status;
u16 cmd_cmd;
u16 cmd_link;
u8 byte_cnt; /* size of the config-cmd */
u8 fifo; /* fifo/recv monitor */
u8 sav_bf; /* save bad frames (bit7=1)*/
u8 adr_len; /* adr_len(0-2),al_loc(3),pream(4-5),loopbak(6-7)*/
u8 priority; /* lin_prio(0-2),exp_prio(4-6),bof_metd(7) */
u8 ifs; /* inter frame spacing */
u8 time_low; /* slot time low */
u8 time_high; /* slot time high(0-2) and max. retries(4-7) */
u8 promisc; /* promisc-mode(0) , et al (1-7) */
u8 carr_coll; /* carrier(0-3)/collision(4-7) stuff */
u8 fram_len; /* minimal frame len */
u8 dummy; /* dummy */
};
/*
* Multicast Setup command
*/
struct mcsetup_cmd_struct
{
u16 cmd_status;
u16 cmd_cmd;
u16 cmd_link;
u16 mc_cnt; /* number of bytes in the MC-List */
u8 mc_list[0][6]; /* pointer to 6 bytes entries */
};
/*
* DUMP command
*/
struct dump_cmd_struct
{
u16 cmd_status;
u16 cmd_cmd;
u16 cmd_link;
u16 dump_offset; /* pointeroffset to DUMP space */
};
/*
* transmit command
*/
struct transmit_cmd_struct
{
u16 cmd_status;
u16 cmd_cmd;
u16 cmd_link;
u16 tbd_offset; /* pointeroffset to TBD */
u8 dest[6]; /* destination address of the frame */
u16 length; /* user defined: 802.3 length / Ether type */
};
#define TCMD_ERRMASK 0x0fa0
#define TCMD_MAXCOLLMASK 0x000f
#define TCMD_MAXCOLL 0x0020
#define TCMD_HEARTBEAT 0x0040
#define TCMD_DEFERRED 0x0080
#define TCMD_UNDERRUN 0x0100
#define TCMD_LOSTCTS 0x0200
#define TCMD_NOCARRIER 0x0400
#define TCMD_LATECOLL 0x0800
struct tdr_cmd_struct
{
u16 cmd_status;
u16 cmd_cmd;
u16 cmd_link;
u16 status;
};
#define TDR_LNK_OK 0x8000 /* No link problem identified */
#define TDR_XCVR_PRB 0x4000 /* indicates a transceiver problem */
#define TDR_ET_OPN 0x2000 /* open, no correct termination */
#define TDR_ET_SRT 0x1000 /* TDR detected a short circuit */
#define TDR_TIMEMASK 0x07ff /* mask for the time field */
/*
* Transmit Buffer Descriptor (TBD)
*/
struct tbd_struct
{
u16 size; /* size + EOF-Flag(15) */
u16 next; /* pointeroffset to next TBD */
u32 buffer; /* pointer to buffer */
};
#define TBD_LAST 0x8000 /* EOF-Flag, indicates last buffer in list */
|
