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1.1 root 1: /*
2: * Intel i82586 Ethernet definitions
3: *
4: * This is an extension to the Linux operating system, and is covered by the
5: * same Gnu Public License that covers that work.
6: *
7: * copyrights (c) 1994 by Michael Hipp ([email protected])
8: *
9: * I have done a look in the following sources:
10: * crynwr-packet-driver by Russ Nelson
11: * Garret A. Wollman's i82586-driver for BSD
12: */
13:
14:
15: #define NI52_RESET 0 /* writing to this address, resets the i82586 */
16: #define NI52_ATTENTION 1 /* channel attention, kick the 586 */
17: #define NI52_TENA 3 /* 2-5 possibly wrong, Xmit enable */
18: #define NI52_TDIS 2 /* Xmit disable */
19: #define NI52_INTENA 5 /* Interrupt enable */
20: #define NI52_INTDIS 4 /* Interrupt disable */
21: #define NI52_MAGIC1 6 /* dunno exact function */
22: #define NI52_MAGIC2 7 /* dunno exact function */
23:
24: #define NI52_MAGICVAL1 0x00 /* magic-values for ni5210 card */
25: #define NI52_MAGICVAL2 0x55
26:
27: /*
28: * where to find the System Configuration Pointer (SCP)
29: */
30: #define SCP_DEFAULT_ADDRESS 0xfffff4
31:
32:
33: /*
34: * System Configuration Pointer Struct
35: */
36:
37: struct scp_struct
38: {
39: unsigned short zero_dum0; /* has to be zero */
40: unsigned char sysbus; /* 0=16Bit,1=8Bit */
41: unsigned char zero_dum1; /* has to be zero for 586 */
42: unsigned short zero_dum2;
43: unsigned short zero_dum3;
44: char *iscp; /* pointer to the iscp-block */
45: };
46:
47:
48: /*
49: * Intermediate System Configuration Pointer (ISCP)
50: */
51: struct iscp_struct
52: {
53: unsigned char busy; /* 586 clears after successful init */
54: unsigned char zero_dummy; /* has to be zero */
55: unsigned short scb_offset; /* pointeroffset to the scb_base */
56: char *scb_base; /* base-address of all 16-bit offsets */
57: };
58:
59: /*
60: * System Control Block (SCB)
61: */
62: struct scb_struct
63: {
64: unsigned char rus;
65: unsigned char cus;
66: unsigned char cmd_ruc; /* command word: RU part */
67: unsigned char cmd_cuc; /* command word: CU part & ACK */
68: unsigned short cbl_offset; /* pointeroffset, command block list */
69: unsigned short rfa_offset; /* pointeroffset, receive frame area */
70: unsigned short crc_errs; /* CRC-Error counter */
71: unsigned short aln_errs; /* allignmenterror counter */
72: unsigned short rsc_errs; /* Resourceerror counter */
73: unsigned short ovrn_errs; /* OVerrunerror counter */
74: };
75:
76: /*
77: * possible command values for the command word
78: */
79: #define RUC_MASK 0x0070 /* mask for RU commands */
80: #define RUC_NOP 0x0000 /* NOP-command */
81: #define RUC_START 0x0010 /* start RU */
82: #define RUC_RESUME 0x0020 /* resume RU after suspend */
83: #define RUC_SUSPEND 0x0030 /* suspend RU */
84: #define RUC_ABORT 0x0040 /* abort receiver operation immediately */
85:
86: #define CUC_MASK 0x07 /* mask for CU command */
87: #define CUC_NOP 0x00 /* NOP-command */
88: #define CUC_START 0x01 /* start execution of 1. cmd on the CBL */
89: #define CUC_RESUME 0x02 /* resume after suspend */
90: #define CUC_SUSPEND 0x03 /* Suspend CU */
91: #define CUC_ABORT 0x04 /* abort command operation immediately */
92:
93: #define ACK_MASK 0xf0 /* mask for ACK command */
94: #define ACK_CX 0x80 /* acknowledges STAT_CX */
95: #define ACK_FR 0x40 /* ack. STAT_FR */
96: #define ACK_CNA 0x20 /* ack. STAT_CNA */
97: #define ACK_RNR 0x10 /* ack. STAT_RNR */
98:
99: /*
100: * possible status values for the status word
101: */
102: #define STAT_MASK 0xf0 /* mask for cause of interrupt */
103: #define STAT_CX 0x80 /* CU finished cmd with its I bit set */
104: #define STAT_FR 0x40 /* RU finished receiving a frame */
105: #define STAT_CNA 0x20 /* CU left active state */
106: #define STAT_RNR 0x10 /* RU left ready state */
107:
108: #define CU_STATUS 0x7 /* CU status, 0=idle */
109: #define CU_SUSPEND 0x1 /* CU is suspended */
110: #define CU_ACTIVE 0x2 /* CU is active */
111:
112: #define RU_STATUS 0x70 /* RU status, 0=idle */
113: #define RU_SUSPEND 0x10 /* RU suspended */
114: #define RU_NOSPACE 0x20 /* RU no resources */
115: #define RU_READY 0x40 /* RU is ready */
116:
117: /*
118: * Receive Frame Descriptor (RFD)
119: */
120: struct rfd_struct
121: {
122: unsigned char stat_low; /* status word */
123: unsigned char stat_high; /* status word */
124: unsigned char rfd_sf; /* 82596 mode only */
125: unsigned char last; /* Bit15,Last Frame on List / Bit14,suspend */
126: 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:
308:
309:
310:
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