xref: /dragonfly/sys/dev/netif/ste/if_stereg.h (revision 984263bc)
1 /*
2  * Copyright (c) 1997, 1998, 1999
3  *	Bill Paul <wpaul@ctr.columbia.edu>.  All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. All advertising materials mentioning features or use of this software
14  *    must display the following acknowledgement:
15  *	This product includes software developed by Bill Paul.
16  * 4. Neither the name of the author nor the names of any co-contributors
17  *    may be used to endorse or promote products derived from this software
18  *    without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30  * THE POSSIBILITY OF SUCH DAMAGE.
31  *
32  * $FreeBSD: src/sys/pci/if_stereg.h,v 1.5.2.3 2002/08/21 15:26:01 ambrisko Exp $
33  */
34 
35 /*
36  * Sundance PCI device/vendor ID for the
37  * ST201 chip.
38  */
39 #define ST_VENDORID		0x13F0
40 #define ST_DEVICEID_ST201	0x0201
41 
42 /*
43  * D-Link PCI device/vendor ID for the DFE-550TX.
44  */
45 #define DL_VENDORID		0x1186
46 #define DL_DEVICEID_550TX	0x1002
47 
48 /*
49  * Register definitions for the Sundance Technologies ST201 PCI
50  * fast ethernet controller. The register space is 128 bytes long and
51  * can be accessed using either PCI I/O space or PCI memory mapping.
52  * There are 32-bit, 16-bit and 8-bit registers.
53  */
54 
55 #define STE_DMACTL		0x00
56 #define STE_TX_DMALIST_PTR	0x04
57 #define STE_TX_DMABURST_THRESH	0x08
58 #define STE_TX_DMAURG_THRESH	0x09
59 #define STE_TX_DMAPOLL_PERIOD	0x0A
60 #define STE_RX_DMASTATUS	0x0C
61 #define STE_RX_DMALIST_PTR	0x10
62 #define STE_RX_DMABURST_THRESH	0x14
63 #define STE_RX_DMAURG_THRESH	0x15
64 #define STE_RX_DMAPOLL_PERIOD	0x16
65 #define STE_DEBUGCTL		0x1A
66 #define STE_ASICCTL		0x30
67 #define STE_EEPROM_DATA		0x34
68 #define STE_EEPROM_CTL		0x36
69 #define STE_FIFOCTL		0x3A
70 #define STE_TX_STARTTHRESH	0x3C
71 #define STE_RX_EARLYTHRESH	0x3E
72 #define STE_EXT_ROMADDR		0x40
73 #define STE_EXT_ROMDATA		0x44
74 #define STE_WAKE_EVENT		0x45
75 #define STE_TX_STATUS		0x46
76 #define STE_TX_FRAMEID		0x47
77 #define STE_COUNTDOWN		0x48
78 #define STE_ISR_ACK		0x4A
79 #define STE_IMR			0x4C
80 #define STE_ISR			0x4E
81 #define STE_MACCTL0		0x50
82 #define STE_MACCTL1		0x52
83 #define STE_PAR0		0x54
84 #define STE_PAR1		0x56
85 #define STE_PAR2		0x58
86 #define STE_MAX_FRAMELEN	0x5A
87 #define STE_RX_MODE		0x5C
88 #define STE_TX_RECLAIM_THRESH	0x5D
89 #define STE_PHYCTL		0x5E
90 #define STE_MAR0		0x60
91 #define STE_MAR1		0x62
92 #define STE_MAR2		0x64
93 #define STE_MAR3		0x66
94 #define STE_STATS		0x68
95 
96 #define STE_LATE_COLLS  0x75
97 #define STE_MULTI_COLLS	0x76
98 #define STE_SINGLE_COLLS 0x77
99 
100 #define STE_DMACTL_RXDMA_STOPPED	0x00000001
101 #define STE_DMACTL_TXDMA_CMPREQ		0x00000002
102 #define STE_DMACTL_TXDMA_STOPPED	0x00000004
103 #define STE_DMACTL_RXDMA_COMPLETE	0x00000008
104 #define STE_DMACTL_TXDMA_COMPLETE	0x00000010
105 #define STE_DMACTL_RXDMA_STALL		0x00000100
106 #define STE_DMACTL_RXDMA_UNSTALL	0x00000200
107 #define STE_DMACTL_TXDMA_STALL		0x00000400
108 #define STE_DMACTL_TXDMA_UNSTALL	0x00000800
109 #define STE_DMACTL_TXDMA_INPROG		0x00004000
110 #define STE_DMACTL_DMA_HALTINPROG	0x00008000
111 #define STE_DMACTL_RXEARLY_ENABLE	0x00020000
112 #define STE_DMACTL_COUNTDOWN_SPEED	0x00040000
113 #define STE_DMACTL_COUNTDOWN_MODE	0x00080000
114 #define STE_DMACTL_MWI_DISABLE		0x00100000
115 #define STE_DMACTL_RX_DISCARD_OFLOWS	0x00400000
116 #define STE_DMACTL_COUNTDOWN_ENABLE	0x00800000
117 #define STE_DMACTL_TARGET_ABORT		0x40000000
118 #define STE_DMACTL_MASTER_ABORT		0x80000000
119 
120 /*
121  * TX DMA burst thresh is the number of 32-byte blocks that
122  * must be loaded into the TX Fifo before a TXDMA burst request
123  * will be issued.
124  */
125 #define STE_TXDMABURST_THRESH		0x1F
126 
127 /*
128  * The number of 32-byte blocks in the TX FIFO falls below the
129  * TX DMA urgent threshold, a TX DMA urgent request will be
130  * generated.
131  */
132 #define STE_TXDMAURG_THRESH		0x3F
133 
134 /*
135  * Number of 320ns intervals between polls of the TXDMA next
136  * descriptor pointer (if we're using polling mode).
137  */
138 #define STE_TXDMA_POLL_PERIOD		0x7F
139 
140 #define STE_RX_DMASTATUS_FRAMELEN	0x00001FFF
141 #define STE_RX_DMASTATUS_RXERR		0x00004000
142 #define STE_RX_DMASTATUS_DMADONE	0x00008000
143 #define STE_RX_DMASTATUS_FIFO_OFLOW	0x00010000
144 #define STE_RX_DMASTATUS_RUNT		0x00020000
145 #define STE_RX_DMASTATUS_ALIGNERR	0x00040000
146 #define STE_RX_DMASTATUS_CRCERR		0x00080000
147 #define STE_RX_DMASTATUS_GIANT		0x00100000
148 #define STE_RX_DMASTATUS_DRIBBLE	0x00800000
149 #define STE_RX_DMASTATUS_DMA_OFLOW	0x01000000
150 
151 /*
152  * RX DMA burst thresh is the number of 32-byte blocks that
153  * must be present in the RX FIFO before a RXDMA bus master
154  * request will be issued.
155  */
156 #define STE_RXDMABURST_THRESH		0xFF
157 
158 /*
159  * The number of 32-byte blocks in the RX FIFO falls below the
160  * RX DMA urgent threshold, a RX DMA urgent request will be
161  * generated.
162  */
163 #define STE_RXDMAURG_THRESH		0x1F
164 
165 /*
166  * Number of 320ns intervals between polls of the RXDMA complete
167  * bit in the status field on the current RX descriptor (if we're
168  * using polling mode).
169  */
170 #define STE_RXDMA_POLL_PERIOD		0x7F
171 
172 #define STE_DEBUGCTL_GPIO0_CTL		0x0001
173 #define STE_DEBUGCTL_GPIO1_CTL		0x0002
174 #define STE_DEBUGCTL_GPIO0_DATA		0x0004
175 #define STE_DEBUGCTL_GPIO1_DATA		0x0008
176 
177 #define STE_ASICCTL_ROMSIZE		0x00000002
178 #define STE_ASICCTL_TX_LARGEPKTS	0x00000004
179 #define STE_ASICCTL_RX_LARGEPKTS	0x00000008
180 #define STE_ASICCTL_EXTROM_DISABLE	0x00000010
181 #define STE_ASICCTL_PHYSPEED_10		0x00000020
182 #define STE_ASICCTL_PHYSPEED_100	0x00000040
183 #define STE_ASICCTL_PHYMEDIA		0x00000080
184 #define STE_ASICCTL_FORCEDCONFIG	0x00000700
185 #define STE_ASICCTL_D3RESET_DISABLE	0x00000800
186 #define STE_ASICCTL_SPEEDUPMODE		0x00002000
187 #define STE_ASICCTL_LEDMODE		0x00004000
188 #define STE_ASICCTL_RSTOUT_POLARITY	0x00008000
189 #define STE_ASICCTL_GLOBAL_RESET	0x00010000
190 #define STE_ASICCTL_RX_RESET		0x00020000
191 #define STE_ASICCTL_TX_RESET		0x00040000
192 #define STE_ASICCTL_DMA_RESET		0x00080000
193 #define STE_ASICCTL_FIFO_RESET		0x00100000
194 #define STE_ASICCTL_NETWORK_RESET	0x00200000
195 #define STE_ASICCTL_HOST_RESET		0x00400000
196 #define STE_ASICCTL_AUTOINIT_RESET	0x00800000
197 #define STE_ASICCTL_EXTRESET_RESET	0x01000000
198 #define STE_ASICCTL_SOFTINTR		0x02000000
199 #define STE_ASICCTL_RESET_BUSY		0x04000000
200 
201 #define STE_ASICCTL1_GLOBAL_RESET	0x0001
202 #define STE_ASICCTL1_RX_RESET		0x0002
203 #define STE_ASICCTL1_TX_RESET		0x0004
204 #define STE_ASICCTL1_DMA_RESET		0x0008
205 #define STE_ASICCTL1_FIFO_RESET		0x0010
206 #define STE_ASICCTL1_NETWORK_RESET	0x0020
207 #define STE_ASICCTL1_HOST_RESET		0x0040
208 #define STE_ASICCTL1_AUTOINIT_RESET	0x0080
209 #define STE_ASICCTL1_EXTRESET_RESET	0x0100
210 #define STE_ASICCTL1_SOFTINTR		0x0200
211 #define STE_ASICCTL1_RESET_BUSY		0x0400
212 
213 #define STE_EECTL_ADDR			0x00FF
214 #define STE_EECTL_OPCODE		0x0300
215 #define STE_EECTL_BUSY			0x1000
216 
217 #define STE_EEOPCODE_WRITE		0x0100
218 #define STE_EEOPCODE_READ		0x0200
219 #define STE_EEOPCODE_ERASE		0x0300
220 
221 #define STE_FIFOCTL_RAMTESTMODE		0x0001
222 #define STE_FIFOCTL_OVERRUNMODE		0x0200
223 #define STE_FIFOCTL_RXFIFOFULL		0x0800
224 #define STE_FIFOCTL_TX_BUSY		0x4000
225 #define STE_FIFOCTL_RX_BUSY		0x8000
226 
227 /*
228  * The number of bytes that must in present in the TX FIFO before
229  * transmission begins. Value should be in increments of 4 bytes.
230  */
231 #define STE_TXSTART_THRESH		0x1FFC
232 
233 /*
234  * Number of bytes that must be present in the RX FIFO before
235  * an RX EARLY interrupt is generated.
236  */
237 #define STE_RXEARLY_THRESH		0x1FFC
238 
239 #define STE_WAKEEVENT_WAKEPKT_ENB	0x01
240 #define STE_WAKEEVENT_MAGICPKT_ENB	0x02
241 #define STE_WAKEEVENT_LINKEVT_ENB	0x04
242 #define STE_WAKEEVENT_WAKEPOLARITY	0x08
243 #define STE_WAKEEVENT_WAKEPKTEVENT	0x10
244 #define STE_WAKEEVENT_MAGICPKTEVENT	0x20
245 #define STE_WAKEEVENT_LINKEVENT		0x40
246 #define STE_WAKEEVENT_WAKEONLAN_ENB	0x80
247 
248 #define STE_TXSTATUS_RECLAIMERR		0x02
249 #define STE_TXSTATUS_STATSOFLOW		0x04
250 #define STE_TXSTATUS_EXCESSCOLLS	0x08
251 #define STE_TXSTATUS_UNDERRUN		0x10
252 #define STE_TXSTATUS_TXINTR_REQ		0x40
253 #define STE_TXSTATUS_TXDONE		0x80
254 
255 #define STE_ISRACK_INTLATCH		0x0001
256 #define STE_ISRACK_HOSTERR		0x0002
257 #define STE_ISRACK_TX_DONE		0x0004
258 #define STE_ISRACK_MACCTL_FRAME		0x0008
259 #define STE_ISRACK_RX_DONE		0x0010
260 #define STE_ISRACK_RX_EARLY		0x0020
261 #define STE_ISRACK_SOFTINTR		0x0040
262 #define STE_ISRACK_STATS_OFLOW		0x0080
263 #define STE_ISRACK_LINKEVENT		0x0100
264 #define STE_ISRACK_TX_DMADONE		0x0200
265 #define STE_ISRACK_RX_DMADONE		0x0400
266 
267 #define STE_IMR_HOSTERR			0x0002
268 #define STE_IMR_TX_DONE			0x0004
269 #define STE_IMR_MACCTL_FRAME		0x0008
270 #define STE_IMR_RX_DONE			0x0010
271 #define STE_IMR_RX_EARLY		0x0020
272 #define STE_IMR_SOFTINTR		0x0040
273 #define STE_IMR_STATS_OFLOW		0x0080
274 #define STE_IMR_LINKEVENT		0x0100
275 #define STE_IMR_TX_DMADONE		0x0200
276 #define STE_IMR_RX_DMADONE		0x0400
277 
278 #define STE_INTRS					\
279 	(STE_IMR_RX_DMADONE|STE_IMR_TX_DMADONE|	\
280 	STE_IMR_TX_DONE|STE_IMR_HOSTERR| \
281         STE_IMR_LINKEVENT)
282 
283 #define STE_ISR_INTLATCH		0x0001
284 #define STE_ISR_HOSTERR			0x0002
285 #define STE_ISR_TX_DONE			0x0004
286 #define STE_ISR_MACCTL_FRAME		0x0008
287 #define STE_ISR_RX_DONE			0x0010
288 #define STE_ISR_RX_EARLY		0x0020
289 #define STE_ISR_SOFTINTR		0x0040
290 #define STE_ISR_STATS_OFLOW		0x0080
291 #define STE_ISR_LINKEVENT		0x0100
292 #define STE_ISR_TX_DMADONE		0x0200
293 #define STE_ISR_RX_DMADONE		0x0400
294 
295 /*
296  * Note: the Sundance manual gives the impression that the's
297  * only one 32-bit MACCTL register. In fact, there are two
298  * 16-bit registers side by side, and you have to access them
299  * separately.
300  */
301 #define STE_MACCTL0_IPG			0x0003
302 #define STE_MACCTL0_FULLDUPLEX		0x0020
303 #define STE_MACCTL0_RX_GIANTS		0x0040
304 #define STE_MACCTL0_FLOWCTL_ENABLE	0x0100
305 #define STE_MACCTL0_RX_FCS		0x0200
306 #define STE_MACCTL0_FIFOLOOPBK		0x0400
307 #define STE_MACCTL0_MACLOOPBK		0x0800
308 
309 #define STE_MACCTL1_COLLDETECT		0x0001
310 #define STE_MACCTL1_CARRSENSE		0x0002
311 #define STE_MACCTL1_TX_BUSY		0x0004
312 #define STE_MACCTL1_TX_ERROR		0x0008
313 #define STE_MACCTL1_STATS_ENABLE	0x0020
314 #define STE_MACCTL1_STATS_DISABLE	0x0040
315 #define STE_MACCTL1_STATS_ENABLED	0x0080
316 #define STE_MACCTL1_TX_ENABLE		0x0100
317 #define STE_MACCTL1_TX_DISABLE		0x0200
318 #define STE_MACCTL1_TX_ENABLED		0x0400
319 #define STE_MACCTL1_RX_ENABLE		0x0800
320 #define STE_MACCTL1_RX_DISABLE		0x1000
321 #define STE_MACCTL1_RX_ENABLED		0x2000
322 #define STE_MACCTL1_PAUSED		0x4000
323 
324 #define STE_IPG_96BT			0x00000000
325 #define STE_IPG_128BT			0x00000001
326 #define STE_IPG_224BT			0x00000002
327 #define STE_IPG_544BT			0x00000003
328 
329 #define STE_RXMODE_UNICAST		0x01
330 #define STE_RXMODE_ALLMULTI		0x02
331 #define STE_RXMODE_BROADCAST		0x04
332 #define STE_RXMODE_PROMISC		0x08
333 #define STE_RXMODE_MULTIHASH		0x10
334 #define STE_RXMODE_ALLIPMULTI		0x20
335 
336 #define STE_PHYCTL_MCLK			0x01
337 #define STE_PHYCTL_MDATA		0x02
338 #define STE_PHYCTL_MDIR			0x04
339 #define STE_PHYCTL_CLK25_DISABLE	0x08
340 #define STE_PHYCTL_DUPLEXPOLARITY	0x10
341 #define STE_PHYCTL_DUPLEXSTAT		0x20
342 #define STE_PHYCTL_SPEEDSTAT		0x40
343 #define STE_PHYCTL_LINKSTAT		0x80
344 
345 /*
346  * EEPROM offsets.
347  */
348 #define STE_EEADDR_CONFIGPARM		0x00
349 #define STE_EEADDR_ASICCTL		0x02
350 #define STE_EEADDR_SUBSYS_ID		0x04
351 #define STE_EEADDR_SUBVEN_ID		0x08
352 
353 #define STE_EEADDR_NODE0		0x10
354 #define STE_EEADDR_NODE1		0x12
355 #define STE_EEADDR_NODE2		0x14
356 
357 /* PCI registers */
358 #define STE_PCI_VENDOR_ID		0x00
359 #define STE_PCI_DEVICE_ID		0x02
360 #define STE_PCI_COMMAND			0x04
361 #define STE_PCI_STATUS			0x06
362 #define STE_PCI_CLASSCODE		0x09
363 #define STE_PCI_LATENCY_TIMER		0x0D
364 #define STE_PCI_HEADER_TYPE		0x0E
365 #define STE_PCI_LOIO			0x10
366 #define STE_PCI_LOMEM			0x14
367 #define STE_PCI_BIOSROM			0x30
368 #define STE_PCI_INTLINE			0x3C
369 #define STE_PCI_INTPIN			0x3D
370 #define STE_PCI_MINGNT			0x3E
371 #define STE_PCI_MINLAT			0x0F
372 
373 #define STE_PCI_CAPID			0x50 /* 8 bits */
374 #define STE_PCI_NEXTPTR			0x51 /* 8 bits */
375 #define STE_PCI_PWRMGMTCAP		0x52 /* 16 bits */
376 #define STE_PCI_PWRMGMTCTRL		0x54 /* 16 bits */
377 
378 #define STE_PSTATE_MASK			0x0003
379 #define STE_PSTATE_D0			0x0000
380 #define STE_PSTATE_D1			0x0002
381 #define STE_PSTATE_D2			0x0002
382 #define STE_PSTATE_D3			0x0003
383 #define STE_PME_EN			0x0010
384 #define STE_PME_STATUS			0x8000
385 
386 
387 struct ste_stats {
388 	u_int32_t		ste_rx_bytes;
389 	u_int32_t		ste_tx_bytes;
390 	u_int16_t		ste_tx_frames;
391 	u_int16_t		ste_rx_frames;
392 	u_int8_t		ste_carrsense_errs;
393 	u_int8_t		ste_late_colls;
394 	u_int8_t		ste_multi_colls;
395 	u_int8_t		ste_single_colls;
396 	u_int8_t		ste_tx_frames_defered;
397 	u_int8_t		ste_rx_lost_frames;
398 	u_int8_t		ste_tx_excess_defers;
399 	u_int8_t		ste_tx_abort_excess_colls;
400 	u_int8_t		ste_tx_bcast_frames;
401 	u_int8_t		ste_rx_bcast_frames;
402 	u_int8_t		ste_tx_mcast_frames;
403 	u_int8_t		ste_rx_mcast_frames;
404 };
405 
406 struct ste_frag {
407 	u_int32_t		ste_addr;
408 	u_int32_t		ste_len;
409 };
410 
411 #define STE_FRAG_LAST		0x80000000
412 #define STE_FRAG_LEN		0x00001FFF
413 
414 #define STE_MAXFRAGS	8
415 
416 struct ste_desc {
417 	u_int32_t		ste_next;
418 	u_int32_t		ste_ctl;
419 	struct ste_frag		ste_frags[STE_MAXFRAGS];
420 };
421 
422 struct ste_desc_onefrag {
423 	u_int32_t		ste_next;
424 	u_int32_t		ste_status;
425 	struct ste_frag		ste_frag;
426 };
427 
428 #define STE_TXCTL_WORDALIGN	0x00000003
429 #define STE_TXCTL_FRAMEID	0x000003FC
430 #define STE_TXCTL_NOCRC		0x00002000
431 #define STE_TXCTL_TXINTR	0x00008000
432 #define STE_TXCTL_DMADONE	0x00010000
433 #define STE_TXCTL_DMAINTR	0x80000000
434 
435 #define STE_RXSTAT_FRAMELEN	0x00001FFF
436 #define STE_RXSTAT_FRAME_ERR	0x00004000
437 #define STE_RXSTAT_DMADONE	0x00008000
438 #define STE_RXSTAT_FIFO_OFLOW	0x00010000
439 #define STE_RXSTAT_RUNT		0x00020000
440 #define STE_RXSTAT_ALIGNERR	0x00040000
441 #define STE_RXSTAT_CRCERR	0x00080000
442 #define STE_RXSTAT_GIANT	0x00100000
443 #define STE_RXSTAT_DRIBBLEBITS	0x00800000
444 #define STE_RXSTAT_DMA_OFLOW	0x01000000
445 #define STE_RXATAT_ONEBUF	0x10000000
446 
447 /*
448  * register space access macros
449  */
450 #define CSR_WRITE_4(sc, reg, val)	\
451 	bus_space_write_4(sc->ste_btag, sc->ste_bhandle, reg, val)
452 #define CSR_WRITE_2(sc, reg, val)	\
453 	bus_space_write_2(sc->ste_btag, sc->ste_bhandle, reg, val)
454 #define CSR_WRITE_1(sc, reg, val)	\
455 	bus_space_write_1(sc->ste_btag, sc->ste_bhandle, reg, val)
456 
457 #define CSR_READ_4(sc, reg)		\
458 	bus_space_read_4(sc->ste_btag, sc->ste_bhandle, reg)
459 #define CSR_READ_2(sc, reg)		\
460 	bus_space_read_2(sc->ste_btag, sc->ste_bhandle, reg)
461 #define CSR_READ_1(sc, reg)		\
462 	bus_space_read_1(sc->ste_btag, sc->ste_bhandle, reg)
463 
464 #define STE_TIMEOUT		1000
465 #define STE_MIN_FRAMELEN	60
466 #define STE_PACKET_SIZE		1536
467 #define ETHER_ALIGN		2
468 #define STE_RX_LIST_CNT		64
469 #define STE_TX_LIST_CNT		64
470 #define STE_INC(x, y)		(x) = (x + 1) % y
471 #define STE_NEXT(x, y)		(x + 1) % y
472 
473 struct ste_type {
474 	u_int16_t		ste_vid;
475 	u_int16_t		ste_did;
476 	char			*ste_name;
477 };
478 
479 struct ste_list_data {
480 	struct ste_desc_onefrag	ste_rx_list[STE_RX_LIST_CNT];
481 	struct ste_desc		ste_tx_list[STE_TX_LIST_CNT];
482 	u_int8_t		ste_pad[STE_MIN_FRAMELEN];
483 };
484 
485 struct ste_chain {
486 	struct ste_desc		*ste_ptr;
487 	struct mbuf		*ste_mbuf;
488 	struct ste_chain	*ste_next;
489 	struct ste_chain	*ste_prev;
490 	u_int32_t		ste_phys;
491 };
492 
493 struct ste_chain_onefrag {
494 	struct ste_desc_onefrag	*ste_ptr;
495 	struct mbuf		*ste_mbuf;
496 	struct ste_chain_onefrag	*ste_next;
497 };
498 
499 struct ste_chain_data {
500 	struct ste_chain_onefrag ste_rx_chain[STE_RX_LIST_CNT];
501 	struct ste_chain	 ste_tx_chain[STE_TX_LIST_CNT];
502 	struct ste_chain_onefrag *ste_rx_head;
503 
504 	int			ste_tx_prod;
505 	int			ste_tx_cons;
506 	int			ste_tx_cnt;
507 };
508 
509 struct ste_softc {
510 	struct arpcom		arpcom;
511 	bus_space_tag_t		ste_btag;
512 	bus_space_handle_t	ste_bhandle;
513 	struct resource		*ste_res;
514 	struct resource		*ste_irq;
515 	void			*ste_intrhand;
516 	struct ste_type		*ste_info;
517 	device_t		ste_miibus;
518 	device_t		ste_dev;
519 	int			ste_unit;
520 	int			ste_tx_thresh;
521 	u_int8_t		ste_link;
522 	int			ste_if_flags;
523 	int			ste_tx_prev_idx;
524 	struct ste_list_data	*ste_ldata;
525 	struct ste_chain_data	ste_cdata;
526 	struct callout_handle	ste_stat_ch;
527 	u_int8_t		ste_one_phy;
528 };
529 
530 struct ste_mii_frame {
531 	u_int8_t		mii_stdelim;
532 	u_int8_t		mii_opcode;
533 	u_int8_t		mii_phyaddr;
534 	u_int8_t		mii_regaddr;
535 	u_int8_t		mii_turnaround;
536 	u_int16_t		mii_data;
537 };
538 
539 /*
540  * MII constants
541  */
542 #define STE_MII_STARTDELIM	0x01
543 #define STE_MII_READOP		0x02
544 #define STE_MII_WRITEOP		0x01
545 #define STE_MII_TURNAROUND	0x02
546 
547 #ifdef __alpha__
548 #undef vtophys
549 #define vtophys(va)		alpha_XXX_dmamap((vm_offset_t)va)
550 #endif
551