xref: /freebsd/sys/dev/ste/if_stereg.h (revision d6b92ffa)
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  * $FreeBSD$
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_1	0x0200
41 #define ST_DEVICEID_ST201_2	0x0201
42 
43 /*
44  * D-Link PCI device/vendor ID for the DL10050[AB] chip
45  */
46 #define DL_VENDORID		0x1186
47 #define DL_DEVICEID_DL10050	0x1002
48 
49 /*
50  * Register definitions for the Sundance Technologies ST201 PCI
51  * fast ethernet controller. The register space is 128 bytes long and
52  * can be accessed using either PCI I/O space or PCI memory mapping.
53  * There are 32-bit, 16-bit and 8-bit registers.
54  */
55 
56 #define STE_DMACTL		0x00
57 #define STE_TX_DMALIST_PTR	0x04
58 #define STE_TX_DMABURST_THRESH	0x08
59 #define STE_TX_DMAURG_THRESH	0x09
60 #define STE_TX_DMAPOLL_PERIOD	0x0A
61 #define STE_RX_DMASTATUS	0x0C
62 #define STE_RX_DMALIST_PTR	0x10
63 #define STE_RX_DMABURST_THRESH	0x14
64 #define STE_RX_DMAURG_THRESH	0x15
65 #define STE_RX_DMAPOLL_PERIOD	0x16
66 #define	STE_COUNTDOWN		0x18
67 #define STE_DEBUGCTL		0x1A
68 #define STE_ASICCTL		0x30
69 #define STE_EEPROM_DATA		0x34
70 #define STE_EEPROM_CTL		0x36
71 #define STE_FIFOCTL		0x3A
72 #define STE_TX_STARTTHRESH	0x3C
73 #define STE_RX_EARLYTHRESH	0x3E
74 #define STE_EXT_ROMADDR		0x40
75 #define STE_EXT_ROMDATA		0x44
76 #define STE_WAKE_EVENT		0x45
77 #define STE_TX_STATUS		0x46
78 #define STE_TX_FRAMEID		0x47
79 #define STE_ISR_ACK		0x4A
80 #define STE_IMR			0x4C
81 #define STE_ISR			0x4E
82 #define STE_MACCTL0		0x50
83 #define STE_MACCTL1		0x52
84 #define STE_PAR0		0x54
85 #define STE_PAR1		0x56
86 #define STE_PAR2		0x58
87 #define STE_MAX_FRAMELEN	0x5A
88 #define STE_RX_MODE		0x5C
89 #define STE_TX_RECLAIM_THRESH	0x5D
90 #define STE_PHYCTL		0x5E
91 #define STE_MAR0		0x60
92 #define STE_MAR1		0x62
93 #define STE_MAR2		0x64
94 #define STE_MAR3		0x66
95 
96 #define	STE_STAT_RX_OCTETS_LO	0x68
97 #define	STE_STAT_RX_OCTETS_HI	0x6A
98 #define	STE_STAT_TX_OCTETS_LO	0x6C
99 #define	STE_STAT_TX_OCTETS_HI	0x6E
100 #define	STE_STAT_TX_FRAMES	0x70
101 #define	STE_STAT_RX_FRAMES	0x72
102 #define	STE_STAT_CARRIER_ERR	0x74
103 #define	STE_STAT_LATE_COLLS	0x75
104 #define	STE_STAT_MULTI_COLLS	0x76
105 #define	STE_STAT_SINGLE_COLLS	0x77
106 #define	STE_STAT_TX_DEFER	0x78
107 #define	STE_STAT_RX_LOST	0x79
108 #define	STE_STAT_TX_EXDEFER	0x7A
109 #define	STE_STAT_TX_ABORT	0x7B
110 #define	STE_STAT_TX_BCAST	0x7C
111 #define	STE_STAT_RX_BCAST	0x7D
112 #define	STE_STAT_TX_MCAST	0x7E
113 #define	STE_STAT_RX_MCAST	0x7F
114 
115 #define STE_DMACTL_RXDMA_STOPPED	0x00000001
116 #define STE_DMACTL_TXDMA_CMPREQ		0x00000002
117 #define STE_DMACTL_TXDMA_STOPPED	0x00000004
118 #define STE_DMACTL_RXDMA_COMPLETE	0x00000008
119 #define STE_DMACTL_TXDMA_COMPLETE	0x00000010
120 #define STE_DMACTL_RXDMA_STALL		0x00000100
121 #define STE_DMACTL_RXDMA_UNSTALL	0x00000200
122 #define STE_DMACTL_TXDMA_STALL		0x00000400
123 #define STE_DMACTL_TXDMA_UNSTALL	0x00000800
124 #define STE_DMACTL_TXDMA_INPROG		0x00004000
125 #define STE_DMACTL_DMA_HALTINPROG	0x00008000
126 #define STE_DMACTL_RXEARLY_ENABLE	0x00020000
127 #define STE_DMACTL_COUNTDOWN_SPEED	0x00040000
128 #define STE_DMACTL_COUNTDOWN_MODE	0x00080000
129 #define STE_DMACTL_MWI_DISABLE		0x00100000
130 #define STE_DMACTL_RX_DISCARD_OFLOWS	0x00400000
131 #define STE_DMACTL_COUNTDOWN_ENABLE	0x00800000
132 #define STE_DMACTL_TARGET_ABORT		0x40000000
133 #define STE_DMACTL_MASTER_ABORT		0x80000000
134 
135 /*
136  * TX DMA burst thresh is the number of 32-byte blocks that
137  * must be loaded into the TX Fifo before a TXDMA burst request
138  * will be issued.
139  */
140 #define STE_TXDMABURST_THRESH		0x1F
141 
142 /*
143  * The number of 32-byte blocks in the TX FIFO falls below the
144  * TX DMA urgent threshold, a TX DMA urgent request will be
145  * generated.
146  */
147 #define STE_TXDMAURG_THRESH		0x3F
148 
149 /*
150  * Number of 320ns intervals between polls of the TXDMA next
151  * descriptor pointer (if we're using polling mode).
152  */
153 #define STE_TXDMA_POLL_PERIOD		0x7F
154 
155 #define STE_RX_DMASTATUS_FRAMELEN	0x00001FFF
156 #define STE_RX_DMASTATUS_RXERR		0x00004000
157 #define STE_RX_DMASTATUS_DMADONE	0x00008000
158 #define STE_RX_DMASTATUS_FIFO_OFLOW	0x00010000
159 #define STE_RX_DMASTATUS_RUNT		0x00020000
160 #define STE_RX_DMASTATUS_ALIGNERR	0x00040000
161 #define STE_RX_DMASTATUS_CRCERR		0x00080000
162 #define STE_RX_DMASTATUS_GIANT		0x00100000
163 #define STE_RX_DMASTATUS_DRIBBLE	0x00800000
164 #define STE_RX_DMASTATUS_DMA_OFLOW	0x01000000
165 
166 /*
167  * RX DMA burst thresh is the number of 32-byte blocks that
168  * must be present in the RX FIFO before a RXDMA bus master
169  * request will be issued.
170  */
171 #define STE_RXDMABURST_THRESH		0xFF
172 
173 /*
174  * The number of 32-byte blocks in the RX FIFO falls below the
175  * RX DMA urgent threshold, a RX DMA urgent request will be
176  * generated.
177  */
178 #define STE_RXDMAURG_THRESH		0x1F
179 
180 /*
181  * Number of 320ns intervals between polls of the RXDMA complete
182  * bit in the status field on the current RX descriptor (if we're
183  * using polling mode).
184  */
185 #define STE_RXDMA_POLL_PERIOD		0x7F
186 
187 #define STE_DEBUGCTL_GPIO0_CTL		0x0001
188 #define STE_DEBUGCTL_GPIO1_CTL		0x0002
189 #define STE_DEBUGCTL_GPIO0_DATA		0x0004
190 #define STE_DEBUGCTL_GPIO1_DATA		0x0008
191 
192 #define STE_ASICCTL_ROMSIZE		0x00000002
193 #define STE_ASICCTL_TX_LARGEPKTS	0x00000004
194 #define STE_ASICCTL_RX_LARGEPKTS	0x00000008
195 #define STE_ASICCTL_EXTROM_DISABLE	0x00000010
196 #define STE_ASICCTL_PHYSPEED_10		0x00000020
197 #define STE_ASICCTL_PHYSPEED_100	0x00000040
198 #define STE_ASICCTL_PHYMEDIA		0x00000080
199 #define STE_ASICCTL_FORCEDCONFIG	0x00000700
200 #define STE_ASICCTL_D3RESET_DISABLE	0x00000800
201 #define STE_ASICCTL_SPEEDUPMODE		0x00002000
202 #define STE_ASICCTL_LEDMODE		0x00004000
203 #define STE_ASICCTL_RSTOUT_POLARITY	0x00008000
204 #define STE_ASICCTL_GLOBAL_RESET	0x00010000
205 #define STE_ASICCTL_RX_RESET		0x00020000
206 #define STE_ASICCTL_TX_RESET		0x00040000
207 #define STE_ASICCTL_DMA_RESET		0x00080000
208 #define STE_ASICCTL_FIFO_RESET		0x00100000
209 #define STE_ASICCTL_NETWORK_RESET	0x00200000
210 #define STE_ASICCTL_HOST_RESET		0x00400000
211 #define STE_ASICCTL_AUTOINIT_RESET	0x00800000
212 #define STE_ASICCTL_EXTRESET_RESET	0x01000000
213 #define STE_ASICCTL_SOFTINTR		0x02000000
214 #define STE_ASICCTL_RESET_BUSY		0x04000000
215 
216 #define STE_EECTL_ADDR			0x00FF
217 #define STE_EECTL_OPCODE		0x0300
218 #define STE_EECTL_BUSY			0x1000
219 
220 #define STE_EEOPCODE_WRITE		0x0100
221 #define STE_EEOPCODE_READ		0x0200
222 #define STE_EEOPCODE_ERASE		0x0300
223 
224 #define STE_FIFOCTL_RAMTESTMODE		0x0001
225 #define STE_FIFOCTL_OVERRUNMODE		0x0200
226 #define STE_FIFOCTL_RXFIFOFULL		0x0800
227 #define STE_FIFOCTL_TX_BUSY		0x4000
228 #define STE_FIFOCTL_RX_BUSY		0x8000
229 
230 /*
231  * The number of bytes that must in present in the TX FIFO before
232  * transmission begins. Value should be in increments of 4 bytes.
233  */
234 #define STE_TXSTART_THRESH		0x1FFC
235 
236 /*
237  * Number of bytes that must be present in the RX FIFO before
238  * an RX EARLY interrupt is generated.
239  */
240 #define STE_RXEARLY_THRESH		0x1FFC
241 
242 #define STE_WAKEEVENT_WAKEPKT_ENB	0x01
243 #define STE_WAKEEVENT_MAGICPKT_ENB	0x02
244 #define STE_WAKEEVENT_LINKEVT_ENB	0x04
245 #define STE_WAKEEVENT_WAKEPOLARITY	0x08
246 #define STE_WAKEEVENT_WAKEPKTEVENT	0x10
247 #define STE_WAKEEVENT_MAGICPKTEVENT	0x20
248 #define STE_WAKEEVENT_LINKEVENT		0x40
249 #define STE_WAKEEVENT_WAKEONLAN_ENB	0x80
250 
251 #define STE_TXSTATUS_RECLAIMERR		0x02
252 #define STE_TXSTATUS_STATSOFLOW		0x04
253 #define STE_TXSTATUS_EXCESSCOLLS	0x08
254 #define STE_TXSTATUS_UNDERRUN		0x10
255 #define STE_TXSTATUS_TXINTR_REQ		0x40
256 #define STE_TXSTATUS_TXDONE		0x80
257 
258 #define	STE_ERR_BITS			"\20"				\
259 					"\2RECLAIM\3STSOFLOW"		\
260 					"\4EXCESSCOLLS\5UNDERRUN"	\
261 					"\6INTREQ\7DONE"
262 
263 #define STE_ISRACK_INTLATCH		0x0001
264 #define STE_ISRACK_HOSTERR		0x0002
265 #define STE_ISRACK_TX_DONE		0x0004
266 #define STE_ISRACK_MACCTL_FRAME		0x0008
267 #define STE_ISRACK_RX_DONE		0x0010
268 #define STE_ISRACK_RX_EARLY		0x0020
269 #define STE_ISRACK_SOFTINTR		0x0040
270 #define STE_ISRACK_STATS_OFLOW		0x0080
271 #define STE_ISRACK_LINKEVENT		0x0100
272 #define STE_ISRACK_TX_DMADONE		0x0200
273 #define STE_ISRACK_RX_DMADONE		0x0400
274 
275 #define STE_IMR_HOSTERR			0x0002
276 #define STE_IMR_TX_DONE			0x0004
277 #define STE_IMR_MACCTL_FRAME		0x0008
278 #define STE_IMR_RX_DONE			0x0010
279 #define STE_IMR_RX_EARLY		0x0020
280 #define STE_IMR_SOFTINTR		0x0040
281 #define STE_IMR_STATS_OFLOW		0x0080
282 #define STE_IMR_LINKEVENT		0x0100
283 #define STE_IMR_TX_DMADONE		0x0200
284 #define STE_IMR_RX_DMADONE		0x0400
285 
286 #define STE_INTRS				\
287 	(STE_IMR_RX_DMADONE|STE_IMR_TX_DMADONE|	\
288 	STE_IMR_TX_DONE|STE_IMR_SOFTINTR|	\
289 	STE_IMR_HOSTERR)
290 
291 #define STE_ISR_INTLATCH		0x0001
292 #define STE_ISR_HOSTERR			0x0002
293 #define STE_ISR_TX_DONE			0x0004
294 #define STE_ISR_MACCTL_FRAME		0x0008
295 #define STE_ISR_RX_DONE			0x0010
296 #define STE_ISR_RX_EARLY		0x0020
297 #define STE_ISR_SOFTINTR		0x0040
298 #define STE_ISR_STATS_OFLOW		0x0080
299 #define STE_ISR_LINKEVENT		0x0100
300 #define STE_ISR_TX_DMADONE		0x0200
301 #define STE_ISR_RX_DMADONE		0x0400
302 
303 /*
304  * Note: the Sundance manual gives the impression that the's
305  * only one 32-bit MACCTL register. In fact, there are two
306  * 16-bit registers side by side, and you have to access them
307  * separately.
308  */
309 #define STE_MACCTL0_IPG			0x0003
310 #define STE_MACCTL0_FULLDUPLEX		0x0020
311 #define STE_MACCTL0_RX_GIANTS		0x0040
312 #define STE_MACCTL0_FLOWCTL_ENABLE	0x0100
313 #define STE_MACCTL0_RX_FCS		0x0200
314 #define STE_MACCTL0_FIFOLOOPBK		0x0400
315 #define STE_MACCTL0_MACLOOPBK		0x0800
316 
317 #define STE_MACCTL1_COLLDETECT		0x0001
318 #define STE_MACCTL1_CARRSENSE		0x0002
319 #define STE_MACCTL1_TX_BUSY		0x0004
320 #define STE_MACCTL1_TX_ERROR		0x0008
321 #define STE_MACCTL1_STATS_ENABLE	0x0020
322 #define STE_MACCTL1_STATS_DISABLE	0x0040
323 #define STE_MACCTL1_STATS_ENABLED	0x0080
324 #define STE_MACCTL1_TX_ENABLE		0x0100
325 #define STE_MACCTL1_TX_DISABLE		0x0200
326 #define STE_MACCTL1_TX_ENABLED		0x0400
327 #define STE_MACCTL1_RX_ENABLE		0x0800
328 #define STE_MACCTL1_RX_DISABLE		0x1000
329 #define STE_MACCTL1_RX_ENABLED		0x2000
330 #define STE_MACCTL1_PAUSED		0x4000
331 
332 #define STE_IPG_96BT			0x00000000
333 #define STE_IPG_128BT			0x00000001
334 #define STE_IPG_224BT			0x00000002
335 #define STE_IPG_544BT			0x00000003
336 
337 #define STE_RXMODE_UNICAST		0x01
338 #define STE_RXMODE_ALLMULTI		0x02
339 #define STE_RXMODE_BROADCAST		0x04
340 #define STE_RXMODE_PROMISC		0x08
341 #define STE_RXMODE_MULTIHASH		0x10
342 #define STE_RXMODE_ALLIPMULTI		0x20
343 
344 #define STE_PHYCTL_MCLK			0x01
345 #define STE_PHYCTL_MDATA		0x02
346 #define STE_PHYCTL_MDIR			0x04
347 #define STE_PHYCTL_CLK25_DISABLE	0x08
348 #define STE_PHYCTL_DUPLEXPOLARITY	0x10
349 #define STE_PHYCTL_DUPLEXSTAT		0x20
350 #define STE_PHYCTL_SPEEDSTAT		0x40
351 #define STE_PHYCTL_LINKSTAT		0x80
352 
353 #define	STE_TIMER_TICKS			32
354 #define	STE_TIMER_USECS(x)		((x * 10) / STE_TIMER_TICKS)
355 
356 #define	STE_IM_RX_TIMER_MIN		0
357 #define	STE_IM_RX_TIMER_MAX		209712
358 #define	STE_IM_RX_TIMER_DEFAULT		150
359 
360 /*
361  * EEPROM offsets.
362  */
363 #define STE_EEADDR_CONFIGPARM		0x00
364 #define STE_EEADDR_ASICCTL		0x02
365 #define STE_EEADDR_SUBSYS_ID		0x04
366 #define STE_EEADDR_SUBVEN_ID		0x08
367 
368 #define STE_EEADDR_NODE0		0x10
369 #define STE_EEADDR_NODE1		0x12
370 #define STE_EEADDR_NODE2		0x14
371 
372 /* PCI registers */
373 #define STE_PCI_VENDOR_ID		0x00
374 #define STE_PCI_DEVICE_ID		0x02
375 #define STE_PCI_COMMAND			0x04
376 #define STE_PCI_STATUS			0x06
377 #define STE_PCI_CLASSCODE		0x09
378 #define STE_PCI_LATENCY_TIMER		0x0D
379 #define STE_PCI_HEADER_TYPE		0x0E
380 #define STE_PCI_LOIO			0x10
381 #define STE_PCI_LOMEM			0x14
382 #define STE_PCI_BIOSROM			0x30
383 #define STE_PCI_INTLINE			0x3C
384 #define STE_PCI_INTPIN			0x3D
385 #define STE_PCI_MINGNT			0x3E
386 #define STE_PCI_MINLAT			0x0F
387 
388 #define STE_PCI_CAPID			0x50 /* 8 bits */
389 #define STE_PCI_NEXTPTR			0x51 /* 8 bits */
390 #define STE_PCI_PWRMGMTCAP		0x52 /* 16 bits */
391 #define STE_PCI_PWRMGMTCTRL		0x54 /* 16 bits */
392 
393 #define STE_PSTATE_MASK			0x0003
394 #define STE_PSTATE_D0			0x0000
395 #define STE_PSTATE_D1			0x0002
396 #define STE_PSTATE_D2			0x0002
397 #define STE_PSTATE_D3			0x0003
398 #define STE_PME_EN			0x0010
399 #define STE_PME_STATUS			0x8000
400 
401 struct ste_hw_stats {
402 	uint64_t		rx_bytes;
403 	uint32_t		rx_frames;
404 	uint32_t		rx_bcast_frames;
405 	uint32_t		rx_mcast_frames;
406 	uint32_t		rx_lost_frames;
407 	uint64_t		tx_bytes;
408 	uint32_t		tx_frames;
409 	uint32_t		tx_bcast_frames;
410 	uint32_t		tx_mcast_frames;
411 	uint32_t		tx_carrsense_errs;
412 	uint32_t		tx_single_colls;
413 	uint32_t		tx_multi_colls;
414 	uint32_t		tx_late_colls;
415 	uint32_t		tx_frames_defered;
416 	uint32_t		tx_excess_defers;
417 	uint32_t		tx_abort;
418 };
419 
420 struct ste_frag {
421 	uint32_t		ste_addr;
422 	uint32_t		ste_len;
423 };
424 
425 #define STE_FRAG_LAST		0x80000000
426 #define STE_FRAG_LEN		0x00001FFF
427 
428 /*
429  * A TFD is 16 to 512 bytes in length which means it can have up to 126
430  * fragments for a single Tx frame. Since most frames used in stack have
431  * 3-4 fragments supporting 8 fragments would be enough for normal
432  * operation. If we encounter more than 8 fragments we'll collapse them
433  * into a frame that has less than or equal to 8 fragments. Each buffer
434  * address of a fragment has no alignment limitation.
435  */
436 #define STE_MAXFRAGS	8
437 
438 struct ste_desc {
439 	uint32_t		ste_next;
440 	uint32_t		ste_ctl;
441 	struct ste_frag		ste_frags[STE_MAXFRAGS];
442 };
443 
444 /*
445  * A RFD has the same structure of TFD which in turn means hardware
446  * supports scatter operation in Rx buffer. Since we just allocate Rx
447  * buffer with m_getcl(9) there is no fragmentation at all so use
448  * single fragment for RFD.
449  */
450 struct ste_desc_onefrag {
451 	uint32_t		ste_next;
452 	uint32_t		ste_status;
453 	struct ste_frag		ste_frag;
454 };
455 
456 #define STE_TXCTL_WORDALIGN	0x00000003
457 #define STE_TXCTL_ALIGN_DIS	0x00000001
458 #define STE_TXCTL_FRAMEID	0x000003FC
459 #define STE_TXCTL_NOCRC		0x00002000
460 #define STE_TXCTL_TXINTR	0x00008000
461 #define STE_TXCTL_DMADONE	0x00010000
462 #define STE_TXCTL_DMAINTR	0x80000000
463 
464 #define STE_RXSTAT_FRAMELEN	0x00001FFF
465 #define STE_RXSTAT_FRAME_ERR	0x00004000
466 #define STE_RXSTAT_DMADONE	0x00008000
467 #define STE_RXSTAT_FIFO_OFLOW	0x00010000
468 #define STE_RXSTAT_RUNT		0x00020000
469 #define STE_RXSTAT_ALIGNERR	0x00040000
470 #define STE_RXSTAT_CRCERR	0x00080000
471 #define STE_RXSTAT_GIANT	0x00100000
472 #define STE_RXSTAT_DRIBBLEBITS	0x00800000
473 #define STE_RXSTAT_DMA_OFLOW	0x01000000
474 #define STE_RXATAT_ONEBUF	0x10000000
475 
476 #define STE_RX_BYTES(x)		((x) & STE_RXSTAT_FRAMELEN)
477 
478 /*
479  * register space access macros
480  */
481 #define CSR_WRITE_4(sc, reg, val)	\
482 	bus_write_4((sc)->ste_res, reg, val)
483 #define CSR_WRITE_2(sc, reg, val)	\
484 	bus_write_2((sc)->ste_res, reg, val)
485 #define CSR_WRITE_1(sc, reg, val)	\
486 	bus_write_1((sc)->ste_res, reg, val)
487 
488 #define CSR_READ_4(sc, reg)		\
489 	bus_read_4((sc)->ste_res, reg)
490 #define CSR_READ_2(sc, reg)		\
491 	bus_read_2((sc)->ste_res, reg)
492 #define CSR_READ_1(sc, reg)		\
493 	bus_read_1((sc)->ste_res, reg)
494 
495 #define	CSR_BARRIER(sc, reg, length, flags)				\
496 	bus_barrier((sc)->ste_res, reg, length, flags)
497 
498 #define	STE_DESC_ALIGN		8
499 #define STE_RX_LIST_CNT		128
500 #define STE_TX_LIST_CNT		128
501 #define	STE_RX_LIST_SZ		\
502 	(sizeof(struct ste_desc_onefrag) * STE_RX_LIST_CNT)
503 #define	STE_TX_LIST_SZ		\
504 	(sizeof(struct ste_desc) * STE_TX_LIST_CNT)
505 #define	STE_ADDR_LO(x)		((uint64_t)(x) & 0xFFFFFFFF)
506 #define	STE_ADDR_HI(x)		((uint64_t)(x) >> 32)
507 
508 /*
509  * Since Tx status can hold up to 31 status bytes we should
510  * check Tx status before controller fills it up. Otherwise
511  * Tx MAC stalls.
512  */
513 #define	STE_TX_INTR_FRAMES	16
514 #define	STE_TX_TIMEOUT		5
515 #define STE_TIMEOUT		1000
516 #define STE_MIN_FRAMELEN	60
517 #define STE_PACKET_SIZE		1536
518 #define STE_INC(x, y)		(x) = (x + 1) % y
519 #define STE_DEC(x, y)		(x) = ((x) + ((y) - 1)) % (y)
520 #define STE_NEXT(x, y)		(x + 1) % y
521 
522 struct ste_type {
523 	uint16_t		ste_vid;
524 	uint16_t		ste_did;
525 	const char		*ste_name;
526 };
527 
528 struct ste_list_data {
529 	struct ste_desc_onefrag	*ste_rx_list;
530 	bus_addr_t		ste_rx_list_paddr;
531 	struct ste_desc		*ste_tx_list;
532 	bus_addr_t		ste_tx_list_paddr;
533 };
534 
535 struct ste_chain {
536 	struct ste_desc		*ste_ptr;
537 	struct mbuf		*ste_mbuf;
538 	struct ste_chain	*ste_next;
539 	uint32_t		ste_phys;
540 	bus_dmamap_t		ste_map;
541 };
542 
543 struct ste_chain_onefrag {
544 	struct ste_desc_onefrag	*ste_ptr;
545 	struct mbuf		*ste_mbuf;
546 	struct ste_chain_onefrag	*ste_next;
547 	bus_dmamap_t		ste_map;
548 };
549 
550 struct ste_chain_data {
551 	bus_dma_tag_t		ste_parent_tag;
552 	bus_dma_tag_t		ste_rx_tag;
553 	bus_dma_tag_t		ste_tx_tag;
554 	bus_dma_tag_t		ste_rx_list_tag;
555 	bus_dmamap_t		ste_rx_list_map;
556 	bus_dma_tag_t		ste_tx_list_tag;
557 	bus_dmamap_t		ste_tx_list_map;
558 	bus_dmamap_t		ste_rx_sparemap;
559 	struct ste_chain_onefrag ste_rx_chain[STE_RX_LIST_CNT];
560 	struct ste_chain	ste_tx_chain[STE_TX_LIST_CNT];
561 	struct ste_chain_onefrag *ste_rx_head;
562 	struct ste_chain	*ste_last_tx;
563 	int			ste_tx_prod;
564 	int			ste_tx_cons;
565 	int			ste_tx_cnt;
566 };
567 
568 struct ste_softc {
569 	struct ifnet		*ste_ifp;
570 	struct resource		*ste_res;
571 	int			ste_res_id;
572 	int			ste_res_type;
573 	struct resource		*ste_irq;
574 	void			*ste_intrhand;
575 	struct ste_type		*ste_info;
576 	device_t		ste_miibus;
577 	device_t		ste_dev;
578 	int			ste_tx_thresh;
579 	int			ste_flags;
580 #define	STE_FLAG_ONE_PHY	0x0001
581 #define	STE_FLAG_LINK		0x8000
582 	int			ste_if_flags;
583 	int			ste_timer;
584 	int			ste_int_rx_act;
585 	int			ste_int_rx_mod;
586 	struct ste_list_data	ste_ldata;
587 	struct ste_chain_data	ste_cdata;
588 	struct callout		ste_callout;
589 	struct ste_hw_stats	ste_stats;
590 	struct mtx		ste_mtx;
591 };
592 
593 #define	STE_LOCK(_sc)		mtx_lock(&(_sc)->ste_mtx)
594 #define	STE_UNLOCK(_sc)		mtx_unlock(&(_sc)->ste_mtx)
595 #define	STE_LOCK_ASSERT(_sc)	mtx_assert(&(_sc)->ste_mtx, MA_OWNED)
596