1 /*        $NetBSD: i82586reg.h,v 1.13 2008/04/28 20:23:50 martin Exp $          */
2 
3 /*-
4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to The NetBSD Foundation
8  * by Paul Kranenburg.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29  * POSSIBILITY OF SUCH DAMAGE.
30  */
31 
32 /*-
33  * Copyright (c) 1992, University of Vermont and State Agricultural College.
34  * Copyright (c) 1992, Garrett A. Wollman.
35  * All rights reserved.
36  *
37  * Redistribution and use in source and binary forms, with or without
38  * modification, are permitted provided that the following conditions
39  * are met:
40  * 1. Redistributions of source code must retain the above copyright
41  *    notice, this list of conditions and the following disclaimer.
42  * 2. Redistributions in binary form must reproduce the above copyright
43  *    notice, this list of conditions and the following disclaimer in the
44  *    documentation and/or other materials provided with the distribution.
45  * 3. All advertising materials mentioning features or use of this software
46  *    must display the following acknowledgement:
47  *        This product includes software developed by the University of
48  *        Vermont and State Agricultural College and Garrett A. Wollman.
49  * 4. Neither the name of the University nor the name of the author
50  *    may be used to endorse or promote products derived from this software
51  *    without specific prior written permission.
52  *
53  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
54  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
55  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
56  * ARE DISCLAIMED.  IN NO EVENT SHALL THE UNIVERSITY OR AUTHOR BE LIABLE
57  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
58  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
59  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
60  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
61  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
62  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
63  * SUCH DAMAGE.
64  */
65 
66 /*
67  * Intel 82586 Ethernet chip
68  * Register, bit, and structure definitions.
69  *
70  * Written by GAW with reference to the Clarkson Packet Driver code for this
71  * chip written by Russ Nelson and others.
72  */
73 
74 /*
75  * NOTE, the structure definitions in here are for reference only.
76  * We use integer offsets exclusively to access the i82586 data structures.
77  */
78 
79 /*
80  * The i82596 has a hardware port that can be used to command the
81  * chip to perform special functions.  For all but IE_PORT_RESET,
82  * a 16-byte aligned memory address is ORed into the port command.
83  */
84 #define IE_PORT_RESET                   0x00      /* software reset */
85 #define IE_PORT_SELF_TEST     0x01      /* self-test */
86 #define IE_PORT_ALT_SCP                 0x02      /* set alternate SCP address */
87 #define IE_PORT_DUMP                    0x03      /* dump state */
88 
89 /*
90  * This is the master configuration block.
91  * It tells the hardware where all the rest of the stuff is.
92  *-
93 struct __ie_sys_conf_ptr {
94           u_int16_t mbz;                          // must be zero
95           u_int8_t  ie_bus_use;                   // true if 8-bit only
96           u_int8_t  mbz2[5];            // must be zero
97           u_int32_t ie_iscp_ptr;                  // 24-bit physaddr of ISCP
98 };
99  */
100 #define IE_SCP_SZ             12
101 #define IE_SCP_BUS_USE(base)  ((base) + 2)
102 #define IE_SCP_ISCP(base)     ((base) + 8)
103 
104 /*
105  * SYSBUS byte flags.  Most are specific to the i82596, and so
106  * far we always run an i82596 in i82586-compatible mode.
107  */
108 #define IE_SYSBUS_16BIT                 (0x0 << 0)
109 #define IE_SYSBUS_8BIT                  (0x1 << 0)
110 #define IE_SYSBUS_596_82586   (0x0 << 1)
111 #define IE_SYSBUS_596_32SEG   (0x1 << 1)
112 #define IE_SYSBUS_596_LINEAR  (0x2 << 1)
113 #define IE_SYSBUS_596_TRGINT  (0x0 << 3)
114 #define IE_SYSBUS_596_TRGEXT  (0x1 << 3)
115 #define IE_SYSBUS_596_NOLOCK  (0x0 << 4)
116 #define IE_SYSBUS_596_LOCK    (0x1 << 4)
117 #define IE_SYSBUS_596_INTHIGH (0x0 << 4)
118 #define IE_SYSBUS_596_INTLOW  (0x1 << 5)
119 #define IE_SYSBUS_596_RSVD_SET          (0x1 << 6)
120 #define IE_SYSBUS_596_LE      (0x0 << 7)
121 #define IE_SYSBUS_596_BE      (0x1 << 7)
122 
123 /*
124  * Note that this is wired in hardware; the SCP is always located here, no
125  * matter what.
126  */
127 #define IE_SCP_ADDR 0xfffff4
128 
129 /*
130  * The tells the hardware where all the rest of the stuff is, too.
131  * FIXME: some of these should be re-commented after we figure out their
132  * REAL function.
133  *-
134 struct __ie_int_sys_conf_ptr {
135           u_int8_t  ie_busy;  // zeroed after init
136           u_int8_t  mbz;
137           u_int16_t ie_scb_offset;      // 16-bit physaddr of next struct
138           void *              ie_base;  // 24-bit physaddr for all 16-bit vars
139 };
140  */
141 #define IE_ISCP_SZ            8
142 #define IE_ISCP_BUSY(base)    ((base) + 0)
143 #define IE_ISCP_SCB(base)     ((base) + 2)
144 #define IE_ISCP_BASE(base)    ((base) + 4)
145 
146 /*
147  * This FINALLY tells the hardware what to do and where to put it.
148  *-
149 struct __ie_sys_ctl_block {
150           u_int16_t ie_status;                    // status word
151           u_int16_t ie_command;                   // command word
152           u_int16_t ie_command_list;    // 16-pointer to command block list
153           u_int16_t ie_recv_list;                 // 16-pointer to receive frame list
154           u_int16_t ie_err_crc;                   // CRC errors
155           u_int16_t ie_err_align;                 // Alignment errors
156           u_int16_t ie_err_resource;    // Resource errors
157           u_int16_t ie_err_overrun;     // Overrun errors
158 };
159  */
160 #define IE_SCB_SZ             16
161 #define IE_SCB_STATUS(base)   ((base) + 0)
162 #define IE_SCB_CMD(base)      ((base) + 2)
163 #define IE_SCB_CMDLST(base)   ((base) + 4)
164 #define IE_SCB_RCVLST(base)   ((base) + 6)
165 #define IE_SCB_ERRCRC(base)   ((base) + 8)
166 #define IE_SCB_ERRALN(base)   ((base) + 10)
167 #define IE_SCB_ERRRES(base)   ((base) + 12)
168 #define IE_SCB_ERROVR(base)   ((base) + 14)
169 
170 /* Command values */
171 #define IE_RUC_MASK 0x0070    /* mask for RU command */
172 #define IE_RUC_NOP  0         /* for completeness */
173 #define IE_RUC_START          0x0010    /* start receive unit command */
174 #define IE_RUC_RESUME         0x0020    /* resume a suspended receiver command */
175 #define IE_RUC_SUSPEND        0x0030    /* suspend receiver command */
176 #define IE_RUC_ABORT          0x0040    /* abort current receive operation */
177 
178 #define IE_CUC_MASK 0x0700    /* mask for CU command */
179 #define IE_CUC_NOP  0         /* included for completeness */
180 #define IE_CUC_START          0x0100    /* do-command command */
181 #define IE_CUC_RESUME         0x0200    /* resume a suspended cmd list */
182 #define IE_CUC_SUSPEND        0x0300    /* suspend current command */
183 #define IE_CUC_ABORT          0x0400    /* abort current command */
184 
185 #define IE_ACK_COMMAND        0xf000    /* mask for ACK command */
186 #define IE_ACK_CX   0x8000    /* ack IE_ST_CX */
187 #define IE_ACK_FR   0x4000    /* ack IE_ST_FR */
188 #define IE_ACK_CNA  0x2000    /* ack IE_ST_CNA */
189 #define IE_ACK_RNR  0x1000    /* ack IE_ST_RNR */
190 
191 #define IE_ACTION_COMMAND(x) (((x) & IE_CUC_MASK) == IE_CUC_START)
192                                         /* is this command an action command? */
193 
194 /* Status values */
195 #define IE_ST_WHENCE          0xf000    /* mask for cause of interrupt */
196 #define IE_ST_CX    0x8000    /* command with I bit completed */
197 #define IE_ST_FR    0x4000    /* frame received */
198 #define IE_ST_CNA   0x2000    /* all commands completed */
199 #define IE_ST_RNR   0x1000    /* receive not ready */
200 
201 #define IE_CUS_MASK 0x0700    /* mask for command unit status */
202 #define IE_CUS_ACTIVE         0x0200    /* command unit is active */
203 #define IE_CUS_SUSPEND        0x0100    /* command unit is suspended */
204 
205 #define IE_RUS_MASK 0x0070    /* mask for receiver unit status */
206 #define IE_RUS_SUSPEND        0x0010    /* receiver is suspended */
207 #define IE_RUS_NOSPACE        0x0020    /* receiver has no resources */
208 #define IE_RUS_READY          0x0040    /* receiver is ready */
209 
210 /*
211  * This is filled in partially by the chip, partially by us.
212  *-
213 struct __ie_recv_frame_desc {
214           u_int16_t ie_fd_status;       // status for this frame
215           u_int16_t ie_fd_last;         // end of frame list flag
216           u_int16_t ie_fd_next;         // 16-pointer to next RFD
217           u_int16_t ie_fd_buf_desc;     // 16-pointer to list of buffer descs
218           struct __ie_en_addr dest;     // destination ether
219           struct __ie_en_addr src;      // source ether
220           u_int16_t ie_length;          // 802 length/Ether type
221           u_short             mbz;                // must be zero
222 };
223  */
224 #define IE_RFRAME_SZ                              24
225 #define IE_RFRAME_ADDR(base,i)                    ((base) + (i) * IE_RFRAME_SZ)
226 #define IE_RFRAME_STATUS(b,i)           (IE_RFRAME_ADDR(b,i) + 0)
227 #define IE_RFRAME_LAST(b,i)             (IE_RFRAME_ADDR(b,i) + 2)
228 #define IE_RFRAME_NEXT(b,i)             (IE_RFRAME_ADDR(b,i) + 4)
229 #define IE_RFRAME_BUFDESC(b,i)                    (IE_RFRAME_ADDR(b,i) + 6)
230 #define IE_RFRAME_EDST(b,i)             (IE_RFRAME_ADDR(b,i) + 8)
231 #define IE_RFRAME_ESRC(b,i)             (IE_RFRAME_ADDR(b,i) + 14)
232 #define IE_RFRAME_ELEN(b,i)             (IE_RFRAME_ADDR(b,i) + 20)
233 
234 /* "last" bits */
235 #define IE_FD_EOL   0x8000    /* last rfd in list */
236 #define IE_FD_SUSP  0x4000    /* suspend RU after receipt */
237 
238 /* status field bits */
239 #define IE_FD_COMPLETE        0x8000    /* frame is complete */
240 #define IE_FD_BUSY  0x4000    /* frame is busy */
241 #define IE_FD_OK    0x2000    /* frame is ok */
242 #define IE_FD_CRC   0x0800    /* CRC error */
243 #define IE_FD_ALGN  0x0400    /* Alignment error */
244 #define IE_FD_RNR   0x0200    /* receiver out of resources here */
245 #define IE_FD_OVR   0x0100    /* DMA overrun */
246 #define IE_FD_SHORT 0x0080    /* Short frame */
247 #define IE_FD_NOEOF 0x0040    /* no EOF (?) */
248 #define IE_FD_ERRMASK                   /* all error bits */ \
249           (IE_FD_CRC|IE_FD_ALGN|IE_FD_RNR|IE_FD_OVR|IE_FD_SHORT|IE_FD_NOEOF)
250 #define IE_FD_STATUSBITS      \
251           "\20\20COMPLT\17BUSY\16OK\14CRC\13ALGN\12RNR\11OVR\10SHORT\7NOEOF"
252 
253 /*
254  * linked list of buffers...
255  *-
256 struct __ie_recv_buf_desc {
257           u_int16_t ie_rbd_status;      // status for this buffer
258           u_int16_t ie_rbd_next;        // 16-pointer to next RBD
259           void *              ie_rbd_buffer;      // 24-pointer to buffer for this RBD
260           u_int16_t ie_rbd_length;      // length of the buffer
261           u_int16_t mbz;                // must be zero
262 };
263  */
264 #define IE_RBD_SZ                       12
265 #define IE_RBD_ADDR(base,i)             ((base) + (i) * IE_RBD_SZ)
266 #define IE_RBD_STATUS(b,i)              (IE_RBD_ADDR(b,i) + 0)
267 #define IE_RBD_NEXT(b,i)                (IE_RBD_ADDR(b,i) + 2)
268 #define IE_RBD_BUFADDR(b,i)             (IE_RBD_ADDR(b,i) + 4)
269 #define IE_RBD_BUFLEN(b,i)              (IE_RBD_ADDR(b,i) + 8)
270 
271 /* RBD status fields */
272 #define IE_RBD_LAST 0x8000              /* last buffer */
273 #define IE_RBD_USED 0x4000              /* this buffer has data */
274 #define IE_RBD_CNTMASK        0x3fff              /* byte count of buffer data */
275 
276 /* RDB `End Of List' flag; encoded in `buffer length' field */
277 #define IE_RBD_EOL  0x8000              /* last buffer */
278 
279 
280 /*
281  * All commands share this in common.
282  *-
283 struct __ie_cmd_common {
284           u_int16_t ie_cmd_status;      // status of this command
285           u_int16_t ie_cmd_cmd;                   // command word
286           u_int16_t ie_cmd_link;                  // link to next command
287 };
288  */
289 #define IE_CMD_COMMON_SZ                6
290 #define IE_CMD_COMMON_STATUS(base)      ((base) + 0)
291 #define IE_CMD_COMMON_CMD(base)                   ((base) + 2)
292 #define IE_CMD_COMMON_LINK(base)        ((base) + 4)
293 
294 #define IE_STAT_COMPL         0x8000    /* command is completed */
295 #define IE_STAT_BUSY          0x4000    /* command is running now */
296 #define IE_STAT_OK  0x2000    /* command completed successfully */
297 #define IE_STAT_ABORT         0x1000  /* command was aborted */
298 
299 #define IE_CMD_NOP  0x0000    /* NOP */
300 #define IE_CMD_IASETUP        0x0001    /* initial address setup */
301 #define IE_CMD_CONFIG         0x0002    /* configure command */
302 #define IE_CMD_MCAST          0x0003    /* multicast setup command */
303 #define IE_CMD_XMIT 0x0004    /* transmit command */
304 #define IE_CMD_TDR  0x0005    /* time-domain reflectometer command */
305 #define IE_CMD_DUMP 0x0006    /* dump command */
306 #define IE_CMD_DIAGNOSE       0x0007    /* diagnostics command */
307 
308 #define IE_CMD_LAST 0x8000    /* this is the last command in the list */
309 #define IE_CMD_SUSPEND        0x4000    /* suspend CU after this command */
310 #define IE_CMD_INTR 0x2000    /* post an interrupt after completion */
311 
312 /*
313  * No-op commands; just like COMMON but "indexable"
314  */
315 #define IE_CMD_NOP_SZ                             IE_CMD_COMMON_SZ
316 #define IE_CMD_NOP_ADDR(base,i)                   ((base) + (i) * IE_CMD_NOP_SZ)
317 #define IE_CMD_NOP_STATUS(b,i)                    (IE_CMD_NOP_ADDR(b,i) + 0)
318 #define IE_CMD_NOP_CMD(b,i)             (IE_CMD_NOP_ADDR(b,i) + 2)
319 #define IE_CMD_NOP_LINK(b,i)            (IE_CMD_NOP_ADDR(b,i) + 4)
320 
321 
322 /*
323  * This is the command to transmit a frame.
324  *-
325 struct __ie_xmit_cmd {
326           struct __ie_cmd_common        com;                // common part
327 #define __ie_xmit_status      com.ie_cmd_status
328 
329           u_int16_t ie_xmit_desc;                 // pointer to buffer descriptor
330           struct __ie_en_addr ie_xmit_addr;       // destination address
331           u_int16_t ie_xmit_length;               // 802.3 length/Ether type field
332 };
333  */
334 #define IE_CMD_XMIT_SZ                            (IE_CMD_COMMON_SZ + 10)
335 #define IE_CMD_XMIT_ADDR(base,i)        ((base) + (i) * IE_CMD_XMIT_SZ)
336 #define IE_CMD_XMIT_STATUS(b,i)                   \
337           (IE_CMD_XMIT_ADDR(b,i) + 0)   /* == CMD_COMMON_STATUS */
338 #define IE_CMD_XMIT_CMD(b,i)            \
339           (IE_CMD_XMIT_ADDR(b,i) + 2)   /* == CMD_COMMON_CMD */
340 #define IE_CMD_XMIT_LINK(b,i)           \
341           (IE_CMD_XMIT_ADDR(b,i) + 4)   /* == CMD_COMMON_LINK */
342 #define IE_CMD_XMIT_DESC(b,i)           \
343           (IE_CMD_XMIT_ADDR(b,i) + IE_CMD_COMMON_SZ + 0)
344 #define IE_CMD_XMIT_EADDR(b,i)                    \
345           (IE_CMD_XMIT_ADDR(b,i) + IE_CMD_COMMON_SZ + 2)
346 #define IE_CMD_XMIT_LEN(b,i)            \
347           (IE_CMD_XMIT_ADDR(b,i) + IE_CMD_COMMON_SZ + 8)
348 
349 #define IE_XS_MAXCOLL         0x000f    /* number of collisions during transmit */
350 #define IE_XS_EXCMAX          0x0020    /* exceeded maximum number of collisions */
351 #define IE_XS_SQE   0x0040    /* SQE positive */
352 #define IE_XS_DEFERRED        0x0080    /* transmission deferred */
353 #define IE_XS_UNDERRUN        0x0100    /* DMA underrun */
354 #define IE_XS_LOSTCTS         0x0200    /* Lost CTS */
355 #define IE_XS_NOCARRIER       0x0400    /* No Carrier */
356 #define   IE_XS_LATECOLL      0x0800    /* Late collision */
357 
358 /*
359  * This is a buffer descriptor for a frame to be transmitted.
360  *-
361 struct __ie_xmit_buf {
362           u_int16_t ie_xmit_flags;      // see below
363           u_int16_t ie_xmit_next;                 // 16-pointer to next desc
364           void *ie_xmit_buf;            // 24-pointer to the actual buffer
365 };
366  */
367 #define IE_XBD_SZ                       8
368 #define IE_XBD_ADDR(base,i)             ((base) + (i) * IE_XBD_SZ)
369 #define IE_XBD_FLAGS(b,i)               (IE_XBD_ADDR(b,i) + 0)
370 #define IE_XBD_NEXT(b,i)                (IE_XBD_ADDR(b,i) + 2)
371 #define IE_XBD_BUF(b,i)                           (IE_XBD_ADDR(b,i) + 4)
372 
373 #define IE_TBD_EOL  0x8000              /* this TBD is the last one */
374 #define IE_TBD_CNTMASK        0x3fff              /* The rest of the `flags' word
375                                                      is actually the length. */
376 
377 
378 /*
379  * Multicast setup command.
380  *-
381 struct __ie_mcast_cmd {
382           struct __ie_cmd_common        com;      // common part
383 #define ie_mcast_status                 com.ie_cmd_status
384 
385           // size (in bytes) of multicast addresses
386           u_short             ie_mcast_bytes;
387           struct __ie_en_addr ie_mcast_addrs[IE_MAXMCAST + 1];// space for them
388 };
389  */
390 #define IE_CMD_MCAST_SZ                           (IE_CMD_COMMON_SZ + 2 /* + XXX */)
391 #define IE_CMD_MCAST_BYTES(base)        ((base) + IE_CMD_COMMON_SZ + 0)
392 #define IE_CMD_MCAST_MADDR(base)        ((base) + IE_CMD_COMMON_SZ + 2)
393 
394 /*
395  * Time Domain Reflectometer command.
396  *-
397 struct __ie_tdr_cmd {
398           struct __ie_cmd_common com;   // common part
399 #define ie_tdr_status com.ie_cmd_status
400           u_short ie_tdr_time;                    // error bits and time
401 };
402  */
403 #define IE_CMD_TDR_SZ                   (IE_CMD_COMMON_SZ + 2)
404 #define IE_CMD_TDR_TIME(base) ((base) + IE_CMD_COMMON_SZ + 0)
405 
406 #define IE_TDR_SUCCESS        0x8000    /* TDR succeeded without error */
407 #define IE_TDR_XCVR 0x4000    /* detected a transceiver problem */
408 #define IE_TDR_OPEN 0x2000    /* detected an incorrect termination ("open") */
409 #define IE_TDR_SHORT          0x1000    /* TDR detected a short circuit */
410 #define IE_TDR_TIME 0x07ff    /* mask for reflection time */
411 
412 /*
413  * Initial Address Setup command
414  *-
415 struct __ie_iasetup_cmd {
416           struct __ie_cmd_common com;
417 #define ie_iasetup_status com.ie_cmd_status
418           struct __ie_en_addr ie_address;
419 };
420  */
421 #define IE_CMD_IAS_SZ                   (IE_CMD_COMMON_SZ + 6)
422 #define IE_CMD_IAS_EADDR(base)          ((base) + IE_CMD_COMMON_SZ + 0)
423 
424 /*
425  * Configuration command
426  *-
427 struct __ie_config_cmd {
428           struct __ie_cmd_common com;   // common part
429 #define ie_config_status com.ie_cmd_status
430 
431           u_int8_t ie_config_count;     // byte count (0x0c)
432           u_int8_t ie_fifo;             // fifo (8)
433           u_int8_t ie_save_bad;                   // save bad frames (0x40)
434           u_int8_t ie_addr_len;                   // address length (0x2e) (AL-LOC == 1)
435           u_int8_t ie_priority;                   // priority and backoff (0x0)
436           u_int8_t ie_ifs;              // inter-frame spacing (0x60)
437           u_int8_t ie_slot_low;                   // slot time, LSB (0x0)
438           u_int8_t ie_slot_high;                  // slot time, MSN, and retries (0xf2)
439           u_int8_t ie_promisc;                    // 1 if promiscuous, else 0
440           u_int8_t ie_crs_cdt;                    // CSMA/CD parameters (0x0)
441           u_int8_t ie_min_len;                    // min frame length (0x40)
442           u_int8_t ie_junk;             // stuff for 82596 (0xff)
443 };
444  */
445 #define IE_CMD_CFG_SZ                             (IE_CMD_COMMON_SZ + 12)
446 #define IE_CMD_CFG_CNT(base)            ((base) + IE_CMD_COMMON_SZ + 0)
447 #define IE_CMD_CFG_FIFO(base)           ((base) + IE_CMD_COMMON_SZ + 1)
448 #define IE_CMD_CFG_SAVEBAD(base)        ((base) + IE_CMD_COMMON_SZ + 2)
449 #define IE_CMD_CFG_ADDRLEN(base)        ((base) + IE_CMD_COMMON_SZ + 3)
450 #define IE_CMD_CFG_PRIORITY(base)       ((base) + IE_CMD_COMMON_SZ + 4)
451 #define IE_CMD_CFG_IFS(base)            ((base) + IE_CMD_COMMON_SZ + 5)
452 #define IE_CMD_CFG_SLOT_LOW(base)       ((base) + IE_CMD_COMMON_SZ + 6)
453 #define IE_CMD_CFG_SLOT_HIGH(base)      ((base) + IE_CMD_COMMON_SZ + 7)
454 #define IE_CMD_CFG_PROMISC(base)        ((base) + IE_CMD_COMMON_SZ + 8)
455 #define IE_CMD_CFG_CRSCDT(base)                   ((base) + IE_CMD_COMMON_SZ + 9)
456 #define IE_CMD_CFG_MINLEN(base)                   ((base) + IE_CMD_COMMON_SZ + 10)
457 #define IE_CMD_CFG_JUNK(base)           ((base) + IE_CMD_COMMON_SZ + 11)
458