1/*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (c) 1997, 1998, 1999
5 *	Bill Paul <wpaul@ee.columbia.edu>.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *	This product includes software developed by Bill Paul.
18 * 4. Neither the name of the author nor the names of any co-contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32 * THE POSSIBILITY OF SUCH DAMAGE.
33 */
34
35/*
36 * Register definitions for the SiS 900 and SiS 7016 chipsets. The
37 * 7016 is actually an older chip and some of its registers differ
38 * from the 900, however the core operational registers are the same:
39 * the differences lie in the OnNow/Wake on LAN stuff which we don't
40 * use anyway. The 7016 needs an external MII compliant PHY while the
41 * SiS 900 has one built in. All registers are 32-bits wide.
42 */
43
44/* Registers common to SiS 900 and SiS 7016 */
45#define SIS_CSR			0x00
46#define SIS_CFG			0x04
47#define SIS_EECTL		0x08
48#define SIS_PCICTL		0x0C
49#define SIS_ISR			0x10
50#define SIS_IMR			0x14
51#define SIS_IER			0x18
52#define SIS_PHYCTL		0x1C
53#define SIS_TX_LISTPTR		0x20
54#define SIS_TX_CFG		0x24
55#define SIS_RX_LISTPTR		0x30
56#define SIS_RX_CFG		0x34
57#define SIS_FLOWCTL		0x38
58#define SIS_RXFILT_CTL		0x48
59#define SIS_RXFILT_DATA		0x4C
60#define SIS_PWRMAN_CTL		0xB0
61#define SIS_PWERMAN_WKUP_EVENT	0xB4
62#define SIS_WKUP_FRAME_CRC	0xBC
63#define SIS_WKUP_FRAME_MASK0	0xC0
64#define SIS_WKUP_FRAME_MASKXX	0xEC
65
66/* SiS 7016 specific registers */
67#define SIS_SILICON_REV		0x5C
68#define SIS_MIB_CTL0		0x60
69#define SIS_MIB_CTL1		0x64
70#define SIS_MIB_CTL2		0x68
71#define SIS_MIB_CTL3		0x6C
72#define SIS_MIB			0x80
73#define SIS_LINKSTS		0xA0
74#define SIS_TIMEUNIT		0xA4
75#define SIS_GPIO		0xB8
76
77/* NS DP83815/6 registers */
78#define NS_IHR			0x1C
79#define NS_CLKRUN		0x3C
80#define	NS_WCSR			0x40
81#define NS_SRR			0x58
82#define NS_BMCR			0x80
83#define NS_BMSR			0x84
84#define NS_PHYIDR1		0x88
85#define NS_PHYIDR2		0x8C
86#define NS_ANAR			0x90
87#define NS_ANLPAR		0x94
88#define NS_ANER			0x98
89#define NS_ANNPTR		0x9C
90
91#define NS_PHY_CR		0xE4
92#define NS_PHY_10BTSCR		0xE8
93#define NS_PHY_PAGE		0xCC
94#define NS_PHY_EXTCFG		0xF0
95#define NS_PHY_DSPCFG		0xF4
96#define NS_PHY_SDCFG		0xF8
97#define NS_PHY_TDATA		0xFC
98
99#define NS_CLKRUN_PMESTS	0x00008000
100#define NS_CLKRUN_PMEENB	0x00000100
101#define NS_CLNRUN_CLKRUN_ENB	0x00000001
102
103#define	NS_WCSR_WAKE_PHYINTR	0x00000001
104#define	NS_WCSR_WAKE_UCAST	0x00000002
105#define	NS_WCSR_WAKE_MCAST	0x00000004
106#define	NS_WCSR_WAKE_BCAST	0x00000008
107#define	NS_WCSR_WAKE_ARP	0x00000010
108#define	NS_WCSR_WAKE_PATTERN0	0x00000020
109#define	NS_WCSR_WAKE_PATTERN1	0x00000040
110#define	NS_WCSR_WAKE_PATTERN2	0x00000080
111#define	NS_WCSR_WAKE_PATTERN3	0x00000100
112#define	NS_WCSR_WAKE_MAGIC	0x00000200
113#define	NS_WCSR_WAKE_MAGIC_SEC	0x00000400
114#define	NS_WCSR_DET_MAGIC_SECH	0x00100000
115#define	NS_WCSR_DET_PHYINTR	0x00400000
116#define	NS_WCSR_DET_UCAST	0x00800000
117#define	NS_WCSR_DET_MCAST	0x01000000
118#define	NS_WCSR_DET_BCAST	0x02000000
119#define	NS_WCSR_DET_ARP		0x04000000
120#define	NS_WCSR_DET_PATTERN0	0x08000000
121#define	NS_WCSR_DET_PATTERN1	0x10000000
122#define	NS_WCSR_DET_PATTERN2	0x20000000
123#define	NS_WCSR_DET_PATTERN3	0x40000000
124#define	NS_WCSR_DET_MAGIC	0x80000000
125
126/* NS silicon revisions */
127#define NS_SRR_15C		0x302
128#define NS_SRR_15D		0x403
129#define NS_SRR_16A		0x505
130
131#define SIS_CSR_TX_ENABLE	0x00000001
132#define SIS_CSR_TX_DISABLE	0x00000002
133#define SIS_CSR_RX_ENABLE	0x00000004
134#define SIS_CSR_RX_DISABLE	0x00000008
135#define SIS_CSR_TX_RESET	0x00000010
136#define SIS_CSR_RX_RESET	0x00000020
137#define SIS_CSR_SOFTINTR	0x00000080
138#define SIS_CSR_RESET		0x00000100
139#define SIS_CSR_ACCESS_MODE	0x00000200
140#define SIS_CSR_RELOAD		0x00000400
141
142#define SIS_CFG_BIGENDIAN	0x00000001
143#define SIS_CFG_PERR_DETECT	0x00000008
144#define SIS_CFG_DEFER_DISABLE	0x00000010
145#define SIS_CFG_OUTOFWIN_TIMER	0x00000020
146#define SIS_CFG_SINGLE_BACKOFF	0x00000040
147#define SIS_CFG_PCIREQ_ALG	0x00000080
148#define SIS_CFG_FAIR_BACKOFF	0x00000200 /* 635 & 900B Specific */
149#define SIS_CFG_RND_CNT	0x00000400 /* 635 & 900B Specific */
150#define SIS_CFG_EDB_MASTER_EN	0x00002000
151
152#define SIS_EECTL_DIN		0x00000001
153#define SIS_EECTL_DOUT		0x00000002
154#define SIS_EECTL_CLK		0x00000004
155#define SIS_EECTL_CSEL		0x00000008
156
157#define	SIS_MII_CLK		0x00000040
158#define	SIS_MII_DIR		0x00000020
159#define	SIS_MII_DATA		0x00000010
160
161#define SIS_EECMD_WRITE		0x140
162#define SIS_EECMD_READ		0x180
163#define SIS_EECMD_ERASE		0x1c0
164
165/*
166 * EEPROM Commands for SiS96x
167 * chipsets.
168 */
169#define SIS_EECMD_REQ		0x00000400
170#define SIS_EECMD_DONE		0x00000200
171#define SIS_EECMD_GNT		0x00000100
172
173#define SIS_EE_NODEADDR		0x8
174#define NS_EE_NODEADDR		0x6
175
176#define SIS_PCICTL_SRAMADDR	0x0000001F
177#define SIS_PCICTL_RAMTSTENB	0x00000020
178#define SIS_PCICTL_TXTSTENB	0x00000040
179#define SIS_PCICTL_RXTSTENB	0x00000080
180#define SIS_PCICTL_BMTSTENB	0x00000200
181#define SIS_PCICTL_RAMADDR	0x001F0000
182#define SIS_PCICTL_ROMTIME	0x0F000000
183#define SIS_PCICTL_DISCTEST	0x40000000
184
185#define SIS_ISR_RX_OK		0x00000001
186#define SIS_ISR_RX_DESC_OK	0x00000002
187#define SIS_ISR_RX_ERR		0x00000004
188#define SIS_ISR_RX_EARLY	0x00000008
189#define SIS_ISR_RX_IDLE		0x00000010
190#define SIS_ISR_RX_OFLOW	0x00000020
191#define SIS_ISR_TX_OK		0x00000040
192#define SIS_ISR_TX_DESC_OK	0x00000080
193#define SIS_ISR_TX_ERR		0x00000100
194#define SIS_ISR_TX_IDLE		0x00000200
195#define SIS_ISR_TX_UFLOW	0x00000400
196#define SIS_ISR_SOFTINTR	0x00000800
197#define SIS_ISR_HIBITS		0x00008000
198#define SIS_ISR_RX_FIFO_OFLOW	0x00010000
199#define SIS_ISR_TGT_ABRT	0x00100000
200#define SIS_ISR_BM_ABRT		0x00200000
201#define SIS_ISR_SYSERR		0x00400000
202#define SIS_ISR_PARITY_ERR	0x00800000
203#define SIS_ISR_RX_RESET_DONE	0x01000000
204#define SIS_ISR_TX_RESET_DONE	0x02000000
205#define SIS_ISR_TX_PAUSE_START	0x04000000
206#define SIS_ISR_TX_PAUSE_DONE	0x08000000
207#define SIS_ISR_WAKE_EVENT	0x10000000
208
209#define SIS_IMR_RX_OK		0x00000001
210#define SIS_IMR_RX_DESC_OK	0x00000002
211#define SIS_IMR_RX_ERR		0x00000004
212#define SIS_IMR_RX_EARLY	0x00000008
213#define SIS_IMR_RX_IDLE		0x00000010
214#define SIS_IMR_RX_OFLOW	0x00000020
215#define SIS_IMR_TX_OK		0x00000040
216#define SIS_IMR_TX_DESC_OK	0x00000080
217#define SIS_IMR_TX_ERR		0x00000100
218#define SIS_IMR_TX_IDLE		0x00000200
219#define SIS_IMR_TX_UFLOW	0x00000400
220#define SIS_IMR_SOFTINTR	0x00000800
221#define SIS_IMR_HIBITS		0x00008000
222#define SIS_IMR_RX_FIFO_OFLOW	0x00010000
223#define SIS_IMR_TGT_ABRT	0x00100000
224#define SIS_IMR_BM_ABRT		0x00200000
225#define SIS_IMR_SYSERR		0x00400000
226#define SIS_IMR_PARITY_ERR	0x00800000
227#define SIS_IMR_RX_RESET_DONE	0x01000000
228#define SIS_IMR_TX_RESET_DONE	0x02000000
229#define SIS_IMR_TX_PAUSE_START	0x04000000
230#define SIS_IMR_TX_PAUSE_DONE	0x08000000
231#define SIS_IMR_WAKE_EVENT	0x10000000
232
233#define SIS_INTRS	\
234	(SIS_IMR_RX_OFLOW|SIS_IMR_TX_UFLOW|SIS_IMR_TX_OK|\
235	 SIS_IMR_TX_IDLE|SIS_IMR_RX_OK|SIS_IMR_RX_ERR|\
236	 SIS_IMR_RX_IDLE|\
237	 SIS_IMR_SYSERR)
238
239#define SIS_IER_INTRENB		0x00000001
240
241#define SIS_PHYCTL_ACCESS	0x00000010
242#define SIS_PHYCTL_OP		0x00000020
243#define SIS_PHYCTL_REGADDR	0x000007C0
244#define SIS_PHYCTL_PHYADDR	0x0000F800
245#define SIS_PHYCTL_PHYDATA	0xFFFF0000
246
247#define SIS_PHYOP_READ		0x00000020
248#define SIS_PHYOP_WRITE		0x00000000
249
250#define SIS_TXCFG_DRAIN_THRESH	0x0000003F /* 32-byte units */
251#define SIS_TXCFG_FILL_THRESH	0x00003F00 /* 32-byte units */
252#define SIS_TXCFG_DMABURST	0x00700000
253#define SIS_TXCFG_AUTOPAD	0x10000000
254#define SIS_TXCFG_LOOPBK	0x20000000
255#define SIS_TXCFG_IGN_HBEAT	0x40000000
256#define SIS_TXCFG_IGN_CARR	0x80000000
257
258#define SIS_TXCFG_DRAIN(x)	(((x) >> 5) & SIS_TXCFG_DRAIN_THRESH)
259#define SIS_TXCFG_FILL(x)	((((x) >> 5) << 8) & SIS_TXCFG_FILL_THRESH)
260
261#define SIS_TXDMA_512BYTES	0x00000000
262#define SIS_TXDMA_4BYTES	0x00100000
263#define SIS_TXDMA_8BYTES	0x00200000
264#define SIS_TXDMA_16BYTES	0x00300000
265#define SIS_TXDMA_32BYTES	0x00400000
266#define SIS_TXDMA_64BYTES	0x00500000
267#define SIS_TXDMA_128BYTES	0x00600000
268#define SIS_TXDMA_256BYTES	0x00700000
269
270#define SIS_TXCFG_100	\
271	(SIS_TXDMA_64BYTES|SIS_TXCFG_AUTOPAD|\
272	 SIS_TXCFG_FILL(64)|SIS_TXCFG_DRAIN(1536))
273
274#define SIS_TXCFG_10	\
275	(SIS_TXDMA_32BYTES|SIS_TXCFG_AUTOPAD|\
276	 SIS_TXCFG_FILL(64)|SIS_TXCFG_DRAIN(1536))
277
278#define SIS_RXCFG_DRAIN_THRESH	0x0000003E /* 8-byte units */
279#define SIS_TXCFG_MPII03D	0x00040000 /* "Must be 1" */
280#define SIS_RXCFG_DMABURST	0x00700000
281#define SIS_RXCFG_RX_JABBER	0x08000000
282#define SIS_RXCFG_RX_TXPKTS	0x10000000
283#define SIS_RXCFG_RX_RUNTS	0x40000000
284#define SIS_RXCFG_RX_GIANTS	0x80000000
285
286#define SIS_RXCFG_DRAIN(x)	((((x) >> 3) << 1) & SIS_RXCFG_DRAIN_THRESH)
287
288#define SIS_RXDMA_512BYTES	0x00000000
289#define SIS_RXDMA_4BYTES	0x00100000
290#define SIS_RXDMA_8BYTES	0x00200000
291#define SIS_RXDMA_16BYTES	0x00300000
292#define SIS_RXDMA_32BYTES	0x00400000
293#define SIS_RXDMA_64BYTES	0x00500000
294#define SIS_RXDMA_128BYTES	0x00600000
295#define SIS_RXDMA_256BYTES	0x00700000
296
297#define SIS_RXCFG256 \
298	(SIS_RXCFG_DRAIN(64)|SIS_RXDMA_256BYTES)
299#define SIS_RXCFG64 \
300	(SIS_RXCFG_DRAIN(64)|SIS_RXDMA_64BYTES)
301
302#define SIS_RXFILTCTL_ADDR	0x000F0000
303#define NS_RXFILTCTL_MCHASH	0x00200000
304#define NS_RXFILTCTL_ARP	0x00400000
305#define NS_RXFILTCTL_PERFECT	0x08000000
306#define SIS_RXFILTCTL_ALLPHYS	0x10000000
307#define SIS_RXFILTCTL_ALLMULTI	0x20000000
308#define SIS_RXFILTCTL_BROAD	0x40000000
309#define SIS_RXFILTCTL_ENABLE	0x80000000
310
311#define SIS_FILTADDR_PAR0	0x00000000
312#define SIS_FILTADDR_PAR1	0x00010000
313#define SIS_FILTADDR_PAR2	0x00020000
314#define SIS_FILTADDR_MAR0	0x00040000
315#define SIS_FILTADDR_MAR1	0x00050000
316#define SIS_FILTADDR_MAR2	0x00060000
317#define SIS_FILTADDR_MAR3	0x00070000
318#define SIS_FILTADDR_MAR4	0x00080000
319#define SIS_FILTADDR_MAR5	0x00090000
320#define SIS_FILTADDR_MAR6	0x000A0000
321#define SIS_FILTADDR_MAR7	0x000B0000
322
323#define NS_FILTADDR_PAR0	0x00000000
324#define NS_FILTADDR_PAR1	0x00000002
325#define NS_FILTADDR_PAR2	0x00000004
326
327#define NS_FILTADDR_FMEM_LO	0x00000200
328#define NS_FILTADDR_FMEM_HI	0x000003FE
329
330#define	SIS_PWRMAN_WOL_LINK_OFF	0x00000001
331#define	SIS_PWRMAN_WOL_LINK_ON	0x00000002
332#define	SIS_PWRMAN_WOL_MAGIC	0x00000400
333
334/*
335 * TX/RX DMA descriptor structures.
336 */
337struct sis_desc {
338	/* SiS hardware descriptor section */
339	uint32_t		sis_next;
340	volatile uint32_t	sis_cmdsts;
341	volatile uint32_t	sis_ptr;
342};
343
344#define SIS_CMDSTS_BUFLEN	0x00000FFF
345#define SIS_CMDSTS_PKT_OK	0x08000000
346#define SIS_CMDSTS_CRC		0x10000000
347#define SIS_CMDSTS_INTR		0x20000000
348#define SIS_CMDSTS_MORE		0x40000000
349#define SIS_CMDSTS_OWN		0x80000000
350
351#define SIS_RXSTAT_COLL		0x00010000
352#define SIS_RXSTAT_LOOPBK	0x00020000
353#define SIS_RXSTAT_ALIGNERR	0x00040000
354#define SIS_RXSTAT_CRCERR	0x00080000
355#define SIS_RXSTAT_SYMBOLERR	0x00100000
356#define SIS_RXSTAT_RUNT		0x00200000
357#define SIS_RXSTAT_GIANT	0x00400000
358#define SIS_RXSTAT_DSTCLASS	0x01800000
359#define SIS_RXSTAT_OVERRUN	0x02000000
360#define SIS_RXSTAT_RX_ABORT	0x04000000
361
362#define	SIS_RXSTAT_ERROR(x)						\
363	((x) & (SIS_RXSTAT_RX_ABORT | SIS_RXSTAT_OVERRUN |		\
364	SIS_RXSTAT_GIANT | SIS_RXSTAT_SYMBOLERR | SIS_RXSTAT_RUNT |	\
365	SIS_RXSTAT_CRCERR | SIS_RXSTAT_ALIGNERR))
366
367#define SIS_DSTCLASS_REJECT	0x00000000
368#define SIS_DSTCLASS_UNICAST	0x00800000
369#define SIS_DSTCLASS_MULTICAST	0x01000000
370#define SIS_DSTCLASS_BROADCAST	0x02000000
371
372#define SIS_TXSTAT_COLLCNT	0x000F0000
373#define SIS_TXSTAT_EXCESSCOLLS	0x00100000
374#define SIS_TXSTAT_OUTOFWINCOLL	0x00200000
375#define SIS_TXSTAT_EXCESS_DEFER	0x00400000
376#define SIS_TXSTAT_DEFERED	0x00800000
377#define SIS_TXSTAT_CARR_LOST	0x01000000
378#define SIS_TXSTAT_UNDERRUN	0x02000000
379#define SIS_TXSTAT_TX_ABORT	0x04000000
380
381#define	SIS_DESC_ALIGN		16
382#define	SIS_RX_BUF_ALIGN	4
383#define	SIS_MAXTXSEGS		16
384#define SIS_RX_LIST_CNT		64
385#define SIS_TX_LIST_CNT		128
386
387#define SIS_RX_LIST_SZ		SIS_RX_LIST_CNT * sizeof(struct sis_desc)
388#define SIS_TX_LIST_SZ		SIS_TX_LIST_CNT * sizeof(struct sis_desc)
389
390#define	SIS_ADDR_LO(x)		((uint64_t) (x) & 0xffffffff)
391#define	SIS_ADDR_HI(x)		((uint64_t) (x) >> 32)
392
393#define	SIS_RX_RING_ADDR(sc, i)	\
394	((sc)->sis_rx_paddr + sizeof(struct sis_desc) * (i))
395#define	SIS_TX_RING_ADDR(sc, i)	\
396	((sc)->sis_tx_paddr + sizeof(struct sis_desc) * (i))
397
398#define	SIS_INC(x, y)		(x) = (x + 1) % (y)
399
400/*
401 * SiS PCI vendor ID.
402 */
403#define SIS_VENDORID		0x1039
404
405/*
406 * SiS PCI device IDs
407 */
408#define SIS_DEVICEID_900	0x0900
409#define SIS_DEVICEID_7016	0x7016
410
411/*
412 * SiS 900 PCI revision codes.
413 */
414#define SIS_REV_900B		0x0003
415#define SIS_REV_630A		0x0080
416#define SIS_REV_630E		0x0081
417#define SIS_REV_630S		0x0082
418#define SIS_REV_630EA1		0x0083
419#define SIS_REV_630ET		0x0084
420#define SIS_REV_635		0x0090
421#define SIS_REV_96x		0x0091
422
423/*
424 * NatSemi vendor ID
425 */
426#define NS_VENDORID		0x100B
427
428/*
429 * DP83815 device ID
430 */
431#define NS_DEVICEID_DP83815	0x0020
432
433struct sis_type {
434	uint16_t		sis_vid;
435	uint16_t		sis_did;
436	const char		*sis_name;
437};
438
439#define SIS_TYPE_900	1
440#define SIS_TYPE_7016	2
441#define SIS_TYPE_83815	3
442
443struct sis_txdesc {
444	struct mbuf		*tx_m;
445	bus_dmamap_t		tx_dmamap;
446};
447
448struct sis_rxdesc {
449	struct mbuf		*rx_m;
450	bus_dmamap_t		rx_dmamap;
451	struct sis_desc		*rx_desc;
452};
453
454struct sis_softc {
455	if_t			sis_ifp;	/* interface info */
456	struct resource		*sis_res[2];
457	void			*sis_intrhand;
458	device_t		sis_dev;
459	device_t		sis_miibus;
460	uint8_t			sis_type;
461	uint8_t			sis_rev;
462	uint32_t		sis_flags;
463#define	SIS_FLAG_MANUAL_PAD	0x0800
464#define	SIS_FLAG_LINK		0x8000
465	int			sis_manual_pad;
466	uint32_t		sis_srr;
467	struct sis_desc		*sis_rx_list;
468	struct sis_desc		*sis_tx_list;
469	bus_dma_tag_t		sis_rx_list_tag;
470	bus_dmamap_t		sis_rx_list_map;
471	bus_dma_tag_t		sis_tx_list_tag;
472	bus_dmamap_t		sis_tx_list_map;
473	bus_dma_tag_t		sis_parent_tag;
474	bus_dma_tag_t		sis_rx_tag;
475	bus_dmamap_t		sis_rx_sparemap;
476	bus_dma_tag_t		sis_tx_tag;
477	struct sis_rxdesc	sis_rxdesc[SIS_RX_LIST_CNT];
478	struct sis_txdesc	sis_txdesc[SIS_TX_LIST_CNT];
479	int			sis_tx_prod;
480	int			sis_tx_cons;
481	int			sis_tx_cnt;
482	int			sis_rx_cons;
483	bus_addr_t		sis_rx_paddr;
484	bus_addr_t		sis_tx_paddr;
485	struct callout		sis_stat_ch;
486	int			sis_watchdog_timer;
487	int			sis_if_flags;
488#ifdef DEVICE_POLLING
489	int			rxcycles;
490#endif
491	struct mtx		sis_mtx;
492};
493
494#define SIS_TIMEOUT		1000
495#define ETHER_ALIGN		2
496#define SIS_RXLEN		1536
497#define SIS_MIN_FRAMELEN	60
498
499/*
500 * PCI low memory base and low I/O base register, and
501 * other PCI registers.
502 */
503
504#define SIS_PCI_VENDOR_ID	0x00
505#define SIS_PCI_DEVICE_ID	0x02
506#define SIS_PCI_COMMAND		0x04
507#define SIS_PCI_STATUS		0x06
508#define SIS_PCI_REVID		0x08
509#define SIS_PCI_CLASSCODE	0x09
510#define SIS_PCI_CACHELEN	0x0C
511#define SIS_PCI_LATENCY_TIMER	0x0D
512#define SIS_PCI_HEADER_TYPE	0x0E
513#define SIS_PCI_LOIO		0x10
514#define SIS_PCI_LOMEM		0x14
515#define SIS_PCI_BIOSROM		0x30
516#define SIS_PCI_INTLINE		0x3C
517#define SIS_PCI_INTPIN		0x3D
518#define SIS_PCI_MINGNT		0x3E
519#define SIS_PCI_MINLAT		0x0F
520#define SIS_PCI_RESETOPT	0x48
521#define SIS_PCI_EEPROM_DATA	0x4C
522
523/* power management registers */
524#define SIS_PCI_CAPID		0x50 /* 8 bits */
525#define SIS_PCI_NEXTPTR		0x51 /* 8 bits */
526#define SIS_PCI_PWRMGMTCAP	0x52 /* 16 bits */
527#define SIS_PCI_PWRMGMTCTRL	0x54 /* 16 bits */
528
529#define SIS_PSTATE_MASK		0x0003
530#define SIS_PSTATE_D0		0x0000
531#define SIS_PSTATE_D1		0x0001
532#define SIS_PSTATE_D2		0x0002
533#define SIS_PSTATE_D3		0x0003
534#define SIS_PME_EN		0x0010
535#define SIS_PME_STATUS		0x8000
536