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[/] [or1k/] [trunk/] [uclinux/] [uClinux-2.0.x/] [drivers/] [net/] [ni52.h] - Blame information for rev 1765

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Line No. Rev Author Line
1 199 simons
/*
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 * Intel i82586 Ethernet definitions
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 *
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 * This is an extension to the Linux operating system, and is covered by the
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 * same Gnu Public License that covers that work.
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 *
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 * copyrights (c) 1994 by Michael Hipp (mhipp@student.uni-tuebingen.de)
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 *
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 * I have done a look in the following sources:
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 *   crynwr-packet-driver by Russ Nelson
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 *   Garret A. Wollman's i82586-driver for BSD
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 */
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#define NI52_RESET     0  /* writing to this address, resets the i82586 */
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#define NI52_ATTENTION 1  /* channel attention, kick the 586 */
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#define NI52_TENA      3  /* 2-5 possibly wrong, Xmit enable */
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#define NI52_TDIS      2  /* Xmit disable */
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#define NI52_INTENA    5  /* Interrupt enable */
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#define NI52_INTDIS    4  /* Interrupt disable */
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#define NI52_MAGIC1    6  /* dunno exact function */
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#define NI52_MAGIC2    7  /* dunno exact function */
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#define NI52_MAGICVAL1 0x00  /* magic-values for ni5210 card */
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#define NI52_MAGICVAL2 0x55
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/*
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 * where to find the System Configuration Pointer (SCP)
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 */
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#define SCP_DEFAULT_ADDRESS 0xfffff4
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32
 
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/*
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 * System Configuration Pointer Struct
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 */
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struct scp_struct
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{
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  unsigned short zero_dum0;     /* has to be zero */
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  unsigned char  sysbus;        /* 0=16Bit,1=8Bit */
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  unsigned char  zero_dum1;     /* has to be zero for 586 */
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  unsigned short zero_dum2;
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  unsigned short zero_dum3;
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  char          *iscp;          /* pointer to the iscp-block */
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};
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47
 
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/*
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 * Intermediate System Configuration Pointer (ISCP)
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 */
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struct iscp_struct
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{
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  unsigned char  busy;          /* 586 clears after successful init */
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  unsigned char  zero_dummy;    /* has to be zero */
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  unsigned short scb_offset;    /* pointeroffset to the scb_base */
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  char          *scb_base;      /* base-address of all 16-bit offsets */
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};
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/*
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 * System Control Block (SCB)
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 */
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struct scb_struct
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{
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  unsigned char rus;
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  unsigned char cus;
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  unsigned char cmd_ruc;           /* command word: RU part */
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  unsigned char cmd_cuc;           /* command word: CU part & ACK */
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  unsigned short cbl_offset;    /* pointeroffset, command block list */
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  unsigned short rfa_offset;    /* pointeroffset, receive frame area */
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  unsigned short crc_errs;      /* CRC-Error counter */
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  unsigned short aln_errs;      /* allignmenterror counter */
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  unsigned short rsc_errs;      /* Resourceerror counter */
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  unsigned short ovrn_errs;     /* OVerrunerror counter */
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};
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/*
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 * possible command values for the command word
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 */
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#define RUC_MASK        0x0070  /* mask for RU commands */
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#define RUC_NOP         0x0000  /* NOP-command */
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#define RUC_START       0x0010  /* start RU */
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#define RUC_RESUME      0x0020  /* resume RU after suspend */
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#define RUC_SUSPEND     0x0030  /* suspend RU */
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#define RUC_ABORT       0x0040  /* abort receiver operation immediately */
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#define CUC_MASK        0x07  /* mask for CU command */
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#define CUC_NOP         0x00  /* NOP-command */
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#define CUC_START       0x01  /* start execution of 1. cmd on the CBL */
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#define CUC_RESUME      0x02  /* resume after suspend */
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#define CUC_SUSPEND     0x03  /* Suspend CU */
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#define CUC_ABORT       0x04  /* abort command operation immediately */
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#define ACK_MASK        0xf0  /* mask for ACK command */
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#define ACK_CX          0x80  /* acknowledges STAT_CX */
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#define ACK_FR          0x40  /* ack. STAT_FR */
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#define ACK_CNA         0x20  /* ack. STAT_CNA */
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#define ACK_RNR         0x10  /* ack. STAT_RNR */
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99
/*
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 * possible status values for the status word
101
 */
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#define STAT_MASK       0xf0  /* mask for cause of interrupt */
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#define STAT_CX         0x80  /* CU finished cmd with its I bit set */
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#define STAT_FR         0x40  /* RU finished receiving a frame */
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#define STAT_CNA        0x20  /* CU left active state */
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#define STAT_RNR        0x10  /* RU left ready state */
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#define CU_STATUS       0x7   /* CU status, 0=idle */
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#define CU_SUSPEND      0x1   /* CU is suspended */
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#define CU_ACTIVE       0x2   /* CU is active */
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112
#define RU_STATUS       0x70    /* RU status, 0=idle */
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#define RU_SUSPEND      0x10    /* RU suspended */
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#define RU_NOSPACE      0x20    /* RU no resources */
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#define RU_READY        0x40    /* RU is ready */
116
 
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/*
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 * Receive Frame Descriptor (RFD)
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 */
120
struct rfd_struct
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{
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  unsigned char  stat_low;      /* status word */
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  unsigned char  stat_high;     /* status word */
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  unsigned char  rfd_sf;        /* 82596 mode only */
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  unsigned char  last;          /* Bit15,Last Frame on List / Bit14,suspend */
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  unsigned short next;          /* linkoffset to next RFD */
127
  unsigned short rbd_offset;    /* pointeroffset to RBD-buffer */
128
  unsigned char  dest[6];       /* ethernet-address, destination */
129
  unsigned char  source[6];     /* ethernet-address, source */
130
  unsigned short length;        /* 802.3 frame-length */
131
  unsigned short zero_dummy;    /* dummy */
132
};
133
 
134
#define RFD_LAST     0x80       /* last: last rfd in the list */
135
#define RFD_SUSP     0x40       /* last: suspend RU after  */
136
#define RFD_COMPL    0x80
137
#define RFD_OK       0x20
138
#define RFD_BUSY     0x40
139
#define RFD_ERR_LEN  0x10     /* Length error (if enabled length-checking */
140
#define RFD_ERR_CRC  0x08     /* CRC error */
141
#define RFD_ERR_ALGN 0x04     /* Alignment error */
142
#define RFD_ERR_RNR  0x02     /* status: receiver out of resources */
143
#define RFD_ERR_OVR  0x01     /* DMA Overrun! */
144
 
145
#define RFD_ERR_FTS  0x0080     /* Frame to short */
146
#define RFD_ERR_NEOP 0x0040     /* No EOP flag (for bitstuffing only) */
147
#define RFD_ERR_TRUN 0x0020     /* (82596 only/SF mode) indicates truncated frame */
148
#define RFD_MATCHADD 0x0002     /* status: Destinationaddress !matches IA (only 82596) */
149
#define RFD_COLLDET  0x0001     /* Detected collision during reception */
150
 
151
/*
152
 * Receive Buffer Descriptor (RBD)
153
 */
154
struct rbd_struct
155
{
156
  unsigned short status;        /* status word,number of used bytes in buff */
157
  unsigned short next;          /* pointeroffset to next RBD */
158
  char          *buffer;        /* receive buffer address pointer */
159
  unsigned short size;          /* size of this buffer */
160
  unsigned short zero_dummy;    /* dummy */
161
};
162
 
163
#define RBD_LAST        0x8000  /* last buffer */
164
#define RBD_USED        0x4000  /* this buffer has data */
165
#define RBD_MASK        0x3fff  /* size-mask for length */
166
 
167
/*
168
 * Statusvalues for Commands/RFD
169
 */
170
#define STAT_COMPL   0x8000     /* status: frame/command is complete */
171
#define STAT_BUSY    0x4000     /* status: frame/command is busy */
172
#define STAT_OK      0x2000     /* status: frame/command is ok */
173
 
174
/*
175
 * Action-Commands
176
 */
177
#define CMD_NOP         0x0000  /* NOP */
178
#define CMD_IASETUP     0x0001  /* initial address setup command */
179
#define CMD_CONFIGURE   0x0002  /* configure command */
180
#define CMD_MCSETUP     0x0003  /* MC setup command */
181
#define CMD_XMIT        0x0004  /* transmit command */
182
#define CMD_TDR         0x0005  /* time domain reflectometer (TDR) command */
183
#define CMD_DUMP        0x0006  /* dump command */
184
#define CMD_DIAGNOSE    0x0007  /* diagnose command */
185
 
186
/*
187
 * Action command bits
188
 */
189
#define CMD_LAST        0x8000  /* indicates last command in the CBL */
190
#define CMD_SUSPEND     0x4000  /* suspend CU after this CB */
191
#define CMD_INT         0x2000  /* generate interrupt after execution */
192
 
193
/*
194
 * NOP - command
195
 */
196
struct nop_cmd_struct
197
{
198
  unsigned short cmd_status;    /* status of this command */
199
  unsigned short cmd_cmd;       /* the command itself (+bits) */
200
  unsigned short cmd_link;      /* offsetpointer to next command */
201
};
202
 
203
/*
204
 * IA Setup command
205
 */
206
struct iasetup_cmd_struct
207
{
208
  unsigned short cmd_status;
209
  unsigned short cmd_cmd;
210
  unsigned short cmd_link;
211
  unsigned char  iaddr[6];
212
};
213
 
214
/*
215
 * Configure command
216
 */
217
struct configure_cmd_struct
218
{
219
  unsigned short cmd_status;
220
  unsigned short cmd_cmd;
221
  unsigned short cmd_link;
222
  unsigned char  byte_cnt;   /* size of the config-cmd */
223
  unsigned char  fifo;       /* fifo/recv monitor */
224
  unsigned char  sav_bf;     /* save bad frames (bit7=1)*/
225
  unsigned char  adr_len;    /* adr_len(0-2),al_loc(3),pream(4-5),loopbak(6-7)*/
226
  unsigned char  priority;   /* lin_prio(0-2),exp_prio(4-6),bof_metd(7) */
227
  unsigned char  ifs;        /* inter frame spacing */
228
  unsigned char  time_low;   /* slot time low */
229
  unsigned char  time_high;  /* slot time high(0-2) and max. retries(4-7) */
230
  unsigned char  promisc;    /* promisc-mode(0) , et al (1-7) */
231
  unsigned char  carr_coll;  /* carrier(0-3)/collision(4-7) stuff */
232
  unsigned char  fram_len;   /* minimal frame len */
233
  unsigned char  dummy;      /* dummy */
234
};
235
 
236
/*
237
 * Multicast Setup command
238
 */
239
struct mcsetup_cmd_struct
240
{
241
  unsigned short cmd_status;
242
  unsigned short cmd_cmd;
243
  unsigned short cmd_link;
244
  unsigned short mc_cnt;                /* number of bytes in the MC-List */
245
  unsigned char  mc_list[0][6];          /* pointer to 6 bytes entries */
246
};
247
 
248
/*
249
 * DUMP command
250
 */
251
struct dump_cmd_struct
252
{
253
  unsigned short cmd_status;
254
  unsigned short cmd_cmd;
255
  unsigned short cmd_link;
256
  unsigned short dump_offset;    /* pointeroffset to DUMP space */
257
};
258
 
259
/*
260
 * transmit command
261
 */
262
struct transmit_cmd_struct
263
{
264
  unsigned short cmd_status;
265
  unsigned short cmd_cmd;
266
  unsigned short cmd_link;
267
  unsigned short tbd_offset;    /* pointeroffset to TBD */
268
  unsigned char  dest[6];       /* destination address of the frame */
269
  unsigned short length;        /* user defined: 802.3 length / Ether type */
270
};
271
 
272
#define TCMD_ERRMASK     0x0fa0
273
#define TCMD_MAXCOLLMASK 0x000f
274
#define TCMD_MAXCOLL     0x0020
275
#define TCMD_HEARTBEAT   0x0040
276
#define TCMD_DEFERRED    0x0080
277
#define TCMD_UNDERRUN    0x0100
278
#define TCMD_LOSTCTS     0x0200
279
#define TCMD_NOCARRIER   0x0400
280
#define TCMD_LATECOLL    0x0800
281
 
282
struct tdr_cmd_struct
283
{
284
  unsigned short cmd_status;
285
  unsigned short cmd_cmd;
286
  unsigned short cmd_link;
287
  unsigned short status;
288
};
289
 
290
#define TDR_LNK_OK      0x8000  /* No link problem identified */
291
#define TDR_XCVR_PRB    0x4000  /* indicates a transceiver problem */
292
#define TDR_ET_OPN      0x2000  /* open, no correct termination */
293
#define TDR_ET_SRT      0x1000  /* TDR detected a short circuit */
294
#define TDR_TIMEMASK    0x07ff  /* mask for the time field */
295
 
296
/*
297
 * Transmit Buffer Descriptor (TBD)
298
 */
299
struct tbd_struct
300
{
301
  unsigned short size;          /* size + EOF-Flag(15) */
302
  unsigned short next;          /* pointeroffset to next TBD */
303
  char          *buffer;        /* pointer to buffer */
304
};
305
 
306
#define TBD_LAST 0x8000         /* EOF-Flag, indicates last buffer in list */
307
 
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