1/*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (c) 2000 Berkeley Software Design, Inc.
5 * Copyright (c) 1997, 1998, 1999, 2000
6 *	Bill Paul <wpaul@ee.columbia.edu>.  All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by Bill Paul.
19 * 4. Neither the name of the author nor the names of any co-contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
33 * THE POSSIBILITY OF SUCH DAMAGE.
34 *
35 * $FreeBSD: releng/12.0/sys/dev/pcn/if_pcnreg.h 325966 2017-11-18 14:26:50Z pfg $
36 */
37
38/*
39 * I/O map in 16-bit mode. To switch to 32-bit mode,
40 * you need to perform a 32-bit write to the RDP register
41 * (writing a 0 is recommended).
42 */
43#define PCN_IO16_APROM00	0x00
44#define PCN_IO16_APROM01	0x02
45#define PCN_IO16_APROM02	0x04
46#define PCN_IO16_APROM03	0x06
47#define PCN_IO16_APROM04	0x08
48#define PCN_IO16_APROM05	0x0A
49#define PCN_IO16_APROM06	0x0C
50#define PCN_IO16_APROM07	0x0E
51#define PCN_IO16_RDP		0x10
52#define PCN_IO16_RAP		0x12
53#define PCN_IO16_RESET		0x14
54#define PCN_IO16_BDP		0x16
55
56/*
57 * I/O map in 32-bit mode.
58 */
59#define PCN_IO32_APROM00	0x00
60#define PCN_IO32_APROM01	0x04
61#define PCN_IO32_APROM02	0x08
62#define PCN_IO32_APROM03	0x0C
63#define PCN_IO32_RDP		0x10
64#define PCN_IO32_RAP		0x14
65#define PCN_IO32_RESET		0x18
66#define PCN_IO32_BDP		0x1C
67
68/*
69 * CSR registers
70 */
71#define PCN_CSR_CSR		0x00
72#define PCN_CSR_IAB0		0x01
73#define PCN_CSR_IAB1		0x02
74#define PCN_CSR_IMR		0x03
75#define PCN_CSR_TFEAT		0x04
76#define PCN_CSR_EXTCTL1		0x05
77#define PCN_CSR_DTBLLEN		0x06
78#define PCN_CSR_EXTCTL2		0x07
79#define PCN_CSR_MAR0		0x08
80#define PCN_CSR_MAR1		0x09
81#define PCN_CSR_MAR2		0x0A
82#define PCN_CSR_MAR3		0x0B
83#define PCN_CSR_PAR0		0x0C
84#define PCN_CSR_PAR1		0x0D
85#define PCN_CSR_PAR2		0x0E
86#define PCN_CSR_MODE		0x0F
87#define PCN_CSR_RXADDR0		0x18
88#define PCN_CSR_RXADDR1		0x19
89#define PCN_CSR_TXADDR0		0x1E
90#define PCN_CSR_TXADDR1		0x1F
91#define PCN_CSR_TXPOLL		0x2F
92#define PCN_CSR_RXPOLL		0x31
93#define PCN_CSR_RXRINGLEN	0x4C
94#define PCN_CSR_TXRINGLEN	0x4E
95#define PCN_CSR_DMACTL		0x50
96#define PCN_CSR_BUSTIMER	0x52
97#define PCN_CSR_MEMERRTIMEO	0x64
98#define PCN_CSR_ONNOWMISC	0x74
99#define PCN_CSR_ADVFEAT		0x7A
100#define PCN_CSR_MACCFG		0x7D
101#define PCN_CSR_CHIPID0		0x58
102#define PCN_CSR_CHIPID1		0x59
103
104/*
105 * Control and status register (CSR0)
106 */
107#define PCN_CSR_INIT		0x0001
108#define PCN_CSR_START		0x0002
109#define PCN_CSR_STOP		0x0004
110#define PCN_CSR_TX		0x0008
111#define PCN_CSR_TXON		0x0010
112#define PCN_CSR_RXON		0x0020
113#define PCN_CSR_INTEN		0x0040
114#define PCN_CSR_INTR		0x0080
115#define PCN_CSR_IDONE		0x0100
116#define PCN_CSR_TINT		0x0200
117#define PCN_CSR_RINT		0x0400
118#define PCN_CSR_MERR		0x0800
119#define PCN_CSR_MISS		0x1000
120#define PCN_CSR_CERR		0x2000
121#define PCN_CSR_ERR		0x8000
122
123/*
124 * Interrupt masks and deferral control (CSR3)
125 */
126#define PCN_IMR_BSWAP		0x0004
127#define PCN_IMR_ENMBA		0x0008	/* enable modified backoff alg */
128#define PCN_IMR_DXMT2PD		0x0010
129#define PCN_IMR_LAPPEN		0x0020	/* lookahead packet processing enb */
130#define PCN_IMR_DXSUFLO		0x0040	/* disable TX stop on underflow */
131#define PCN_IMR_IDONE		0x0100
132#define PCN_IMR_TINT		0x0200
133#define PCN_IMR_RINT		0x0400
134#define PCN_IMR_MERR		0x0800
135#define PCN_IMR_MISS		0x1000
136
137/*
138 * Test and features control (CSR4)
139 */
140#define PCN_TFEAT_TXSTRTMASK	0x0004
141#define PCN_TFEAT_TXSTRT	0x0008
142#define PCN_TFEAT_RXCCOFLOWM	0x0010	/* Rx collision counter oflow */
143#define PCN_TFEAT_RXCCOFLOW	0x0020
144#define PCN_TFEAT_UINT		0x0040
145#define PCN_TFEAT_UINTREQ	0x0080
146#define PCN_TFEAT_MISSOFLOWM	0x0100
147#define PCN_TFEAT_MISSOFLOW	0x0200
148#define PCN_TFEAT_STRIP_FCS	0x0400
149#define PCN_TFEAT_PAD_TX	0x0800
150#define PCN_TFEAT_TXDPOLL	0x1000
151#define PCN_TFEAT_DMAPLUS	0x4000
152
153/*
154 * Extended control and interrupt 1 (CSR5)
155 */
156#define PCN_EXTCTL1_SPND	0x0001	/* suspend */
157#define PCN_EXTCTL1_MPMODE	0x0002	/* magic packet mode */
158#define PCN_EXTCTL1_MPENB	0x0004	/* magic packet enable */
159#define PCN_EXTCTL1_MPINTEN	0x0008	/* magic packet interrupt enable */
160#define PCN_EXTCTL1_MPINT	0x0010	/* magic packet interrupt */
161#define PCN_EXTCTL1_MPPLBA	0x0020	/* magic packet phys. logical bcast */
162#define PCN_EXTCTL1_EXDEFEN	0x0040	/* excessive deferral interrupt enb. */
163#define PCN_EXTCTL1_EXDEF	0x0080	/* excessive deferral interrupt */
164#define PCN_EXTCTL1_SINTEN	0x0400	/* system interrupt enable */
165#define PCN_EXTCTL1_SINT	0x0800	/* system interrupt */
166#define PCN_EXTCTL1_LTINTEN	0x4000	/* last TX interrupt enb */
167#define PCN_EXTCTL1_TXOKINTD	0x8000	/* TX OK interrupt disable */
168
169/*
170 * RX/TX descriptor len (CSR6)
171 */
172#define PCN_DTBLLEN_RLEN	0x0F00
173#define PCN_DTBLLEN_TLEN	0xF000
174
175/*
176 * Extended control and interrupt 2 (CSR7)
177 */
178#define PCN_EXTCTL2_MIIPDTINTE	0x0001
179#define PCN_EXTCTL2_MIIPDTINT	0x0002
180#define PCN_EXTCTL2_MCCIINTE	0x0004
181#define PCN_EXTCTL2_MCCIINT	0x0008
182#define PCN_EXTCTL2_MCCINTE	0x0010
183#define PCN_EXTCTL2_MCCINT	0x0020
184#define PCN_EXTCTL2_MAPINTE	0x0040
185#define PCN_EXTCTL2_MAPINT	0x0080
186#define PCN_EXTCTL2_MREINTE	0x0100
187#define PCN_EXTCTL2_MREINT	0x0200
188#define PCN_EXTCTL2_STINTE	0x0400
189#define PCN_EXTCTL2_STINT	0x0800
190#define PCN_EXTCTL2_RXDPOLL	0x1000
191#define PCN_EXTCTL2_RDMD	0x2000
192#define PCN_EXTCTL2_RXFRTG	0x4000
193#define PCN_EXTCTL2_FASTSPNDE	0x8000
194
195
196/*
197 * Mode (CSR15)
198 */
199#define PCN_MODE_RXD		0x0001	/* RX disable */
200#define PCN_MODE_TXD		0x0002	/* TX disable */
201#define PCN_MODE_LOOP		0x0004	/* loopback enable */
202#define PCN_MODE_TXCRCD		0x0008
203#define PCN_MODE_FORCECOLL	0x0010
204#define PCN_MODE_RETRYD		0x0020
205#define PCN_MODE_INTLOOP	0x0040
206#define PCN_MODE_PORTSEL	0x0180
207#define PCN_MODE_RXVPAD		0x2000
208#define PCN_MODE_RXNOBROAD	0x4000
209#define PCN_MODE_PROMISC	0x8000
210
211/* Settings for PCN_MODE_PORTSEL when ASEL (BCR2[1]) is 0 */
212#define PCN_PORT_AUI		0x0000
213#define PCN_PORT_10BASET	0x0080
214#define PCN_PORT_GPSI		0x0100
215#define PCN_PORT_MII		0x0180
216
217/*
218 * Chip ID values.
219 */
220/* CSR88-89: Chip ID masks */
221#define AMD_MASK  0x003
222#define PART_MASK 0xffff
223#define Am79C971  0x2623
224#define Am79C972  0x2624
225#define Am79C973  0x2625
226#define Am79C978  0x2626
227#define Am79C975  0x2627
228#define Am79C976  0x2628
229
230/*
231 * Advanced feature control (CSR122)
232 */
233#define PCN_AFC_RXALIGN		0x0001
234
235/*
236 * BCR (bus control) registers
237 */
238#define	PCN_BCR_MMRA		0x00	/* Master Mode Read Active */
239#define	PCN_BCR_MMW		0x01	/* Master Mode Write Active */
240#define PCN_BCR_MISCCFG		0x02
241#define PCN_BCR_LED0		0x04
242#define PCN_BCR_LED1		0x05
243#define PCN_BCR_LED2		0x06
244#define PCN_BCR_LED3		0x07
245#define PCN_BCR_DUPLEX		0x09
246#define PCN_BCR_BUSCTL		0x12
247#define PCN_BCR_EECTL		0x13
248#define PCN_BCR_SSTYLE		0x14
249#define PCN_BCR_PCILAT		0x16
250#define PCN_BCR_PCISUBVENID	0x17
251#define PCN_BCR_PCISUBSYSID	0x18
252#define PCN_BCR_SRAMSIZE	0x19
253#define PCN_BCR_SRAMBOUND	0x1A
254#define PCN_BCR_SRAMCTL		0x1B
255#define PCN_BCR_MIICTL		0x20
256#define PCN_BCR_MIIADDR		0x21
257#define PCN_BCR_MIIDATA		0x22
258#define PCN_BCR_PCIVENID	0x23
259#define PCN_BCR_PCIPCAP		0x24
260#define PCN_BCR_DATA0		0x25
261#define PCN_BCR_DATA1		0x26
262#define PCN_BCR_DATA2		0x27
263#define PCN_BCR_DATA3		0x28
264#define PCN_BCR_DATA4		0x29
265#define PCN_BCR_DATA5		0x2A
266#define PCN_BCR_DATA6		0x2B
267#define PCN_BCR_DATA7		0x2C
268#define PCN_BCR_ONNOWPAT0	0x2D
269#define PCN_BCR_ONNOWPAT1	0x2E
270#define PCN_BCR_ONNOWPAT2	0x2F
271#define PCN_BCR_PHYSEL		0x31
272
273/*
274 * Miscellaneous Configuration (BCR2)
275 */
276#define PCN_MISC_TMAULOOP	1<<14	/* T-MAU Loopback packet enable. */
277#define PCN_MISC_LEDPE		1<<12	/* LED Program Enable */
278#define PCN_MISC_APROMWE	1<<8	/* Address PROM Write Enable */
279#define PCN_MISC_INTLEVEL	1<<7	/* Interrupt level */
280#define PCN_MISC_EADISEL	1<<3	/* EADI Select */
281#define PCN_MISC_AWAKE		1<<2	/* Power saving mode select */
282#define PCN_MISC_ASEL		1<<1	/* Auto Select */
283#define PCN_MISC_XMAUSEL	1<<0	/* Reserved. */
284
285/*
286 * Full duplex control (BCR9)
287 */
288#define PCN_DUPLEX_FDEN		0x0001	/* Full-duplex enable */
289#define	PCN_DUPLEX_AUI		0x0002	/* AUI full-duplex */
290#define PCN_DUPLEX_FDRPAD	0x0004	/* Full-duplex runt pkt accept dis. */
291
292/*
293 * Burst and bus control register (BCR18)
294 */
295#define PCN_BUSCTL_BWRITE	0x0020
296#define PCN_BUSCTL_BREAD	0x0040
297#define PCN_BUSCTL_DWIO		0x0080
298#define PCN_BUSCTL_EXTREQ	0x0100
299#define PCN_BUSCTL_MEMCMD	0x0200
300#define PCN_BUSCTL_NOUFLOW	0x0800
301#define PCN_BUSCTL_ROMTMG	0xF000
302
303/*
304 * EEPROM control (BCR19)
305 */
306#define PCN_EECTL_EDATA		0x0001
307#define PCN_EECTL_ECLK		0x0002
308#define PCN_EECTL_EECS		0x0004
309#define PCN_EECTL_EEN		0x0100
310#define PCN_EECTL_EEDET		0x2000
311#define PCN_EECTL_PREAD		0x4000
312#define PCN_EECTL_PVALID	0x8000
313
314/*
315 * Software style (BCR20)
316 */
317#define PCN_SSTYLE_APERREN	0x0400	/* advanced parity error checking */
318#define PCN_SSTYLE_SSIZE32	0x0100
319#define PCN_SSTYLE_SWSTYLE	0x00FF
320
321#define PCN_SWSTYLE_LANCE		0x0000
322#define PCN_SWSTYLE_PCNETPCI		0x0102
323#define PCN_SWSTYLE_PCNETPCI_BURST	0x0103
324
325/*
326 * MII control and status (BCR32)
327 */
328#define PCN_MIICTL_MIILP	0x0002	/* MII internal loopback */
329#define PCN_MIICTL_XPHYSP	0x0008	/* external PHY speed */
330#define PCN_MIICTL_XPHYFD	0x0010	/* external PHY full duplex */
331#define PCN_MIICTL_XPHYANE	0x0020	/* external phy auto-neg enable */
332#define PCN_MIICTL_XPHYRST	0x0040	/* external PHY reset */
333#define PCN_MIICTL_DANAS	0x0080	/* disable auto-neg auto-setup */
334#define PCN_MIICTL_APDW		0x0700	/* auto-poll dwell time */
335#define PCN_MIICTL_APEP		0x0100	/* auto-poll external PHY */
336#define PCN_MIICTL_FMDC		0x3000	/* data clock speed */
337#define PCN_MIICTL_MIIPD	0x4000	/* PHY detect */
338#define PCN_MIICTL_ANTST	0x8000	/* Manufacturing test */
339
340/*
341 * MII address register (BCR33)
342 */
343#define PCN_MIIADDR_REGAD	0x001F
344#define PCN_MIIADDR_PHYAD	0x03E0
345
346/* addresses of internal PHYs */
347#define PCN_PHYAD_100BTX	30
348#define PCN_PHYAD_10BT		31
349
350/*
351 * MII data register (BCR34)
352 */
353#define PCN_MIIDATA_MIIMD	0xFFFF
354
355/*
356 * PHY selection (BCR49) (HomePNA NIC only)
357 */
358#define PCN_PHYSEL_PHYSEL	0x0003
359#define PCN_PHYSEL_DEFAULT	0x0300
360#define PCN_PHYSEL_PCNET	0x8000
361
362#define PCN_PHY_10BT		0x0000
363#define PCN_PHY_HOMEPNA		0x0001
364#define PCN_PHY_EXTERNAL	0x0002
365
366struct pcn_rx_desc {
367	u_int16_t		pcn_rxlen;
368	u_int16_t		pcn_rsvd0;
369	u_int16_t		pcn_bufsz;
370	u_int16_t		pcn_rxstat;
371	u_int32_t		pcn_rbaddr;
372	u_int32_t		pcn_uspace;
373};
374
375#define PCN_RXSTAT_BPE		0x0080	/* bus parity error */
376#define PCN_RXSTAT_ENP		0x0100	/* end of packet */
377#define PCN_RXSTAT_STP		0x0200	/* start of packet */
378#define PCN_RXSTAT_BUFF		0x0400	/* buffer error */
379#define PCN_RXSTAT_CRC		0x0800	/* CRC error */
380#define PCN_RXSTAT_OFLOW	0x1000	/* rx overrun */
381#define PCN_RXSTAT_FRAM		0x2000	/* framing error */
382#define PCN_RXSTAT_ERR		0x4000	/* error summary */
383#define PCN_RXSTAT_OWN		0x8000
384
385#define PCN_RXLEN_MBO		0xF000
386#define PCN_RXLEN_BUFSZ		0x0FFF
387
388#define PCN_OWN_RXDESC(x)	(((x)->pcn_rxstat & PCN_RXSTAT_OWN) == 0)
389
390struct pcn_tx_desc {
391	u_int32_t		pcn_txstat;
392	u_int32_t		pcn_txctl;
393	u_int32_t		pcn_tbaddr;
394	u_int32_t		pcn_uspace;
395};
396
397#define PCN_TXSTAT_TRC		0x0000000F	/* transmit retries */
398#define PCN_TXSTAT_RTRY		0x04000000	/* retry */
399#define PCN_TXSTAT_LCAR		0x08000000	/* lost carrier */
400#define PCN_TXSTAT_LCOL		0x10000000	/* late collision */
401#define PCN_TXSTAT_EXDEF	0x20000000	/* excessive deferrals */
402#define PCN_TXSTAT_UFLOW	0x40000000	/* transmit underrun */
403#define PCN_TXSTAT_BUFF		0x80000000	/* buffer error */
404
405#define PCN_TXCTL_OWN		0x80000000
406#define PCN_TXCTL_ERR		0x40000000	/* error summary */
407#define PCN_TXCTL_ADD_FCS	0x20000000	/* add FCS to pkt */
408#define PCN_TXCTL_MORE_LTINT	0x10000000
409#define PCN_TXCTL_ONE		0x08000000
410#define PCN_TXCTL_DEF		0x04000000
411#define PCN_TXCTL_STP		0x02000000
412#define PCN_TXCTL_ENP		0x01000000
413#define PCN_TXCTL_BPE		0x00800000
414#define PCN_TXCTL_MBO		0x0000F000
415#define PCN_TXCTL_BUFSZ		0x00000FFF
416
417#define PCN_OWN_TXDESC(x)	(((x)->pcn_txctl & PCN_TXCTL_OWN) == 0)
418
419#define PCN_RX_LIST_CNT		64
420#define PCN_TX_LIST_CNT		256
421
422struct pcn_list_data {
423	struct pcn_rx_desc	pcn_rx_list[PCN_RX_LIST_CNT];
424	struct pcn_tx_desc	pcn_tx_list[PCN_TX_LIST_CNT];
425};
426
427struct pcn_ring_data {
428	struct mbuf		*pcn_rx_chain[PCN_RX_LIST_CNT];
429	struct mbuf		*pcn_tx_chain[PCN_TX_LIST_CNT];
430	int			pcn_rx_prod;
431	int			pcn_tx_prod;
432	int			pcn_tx_cons;
433	int			pcn_tx_cnt;
434};
435
436/*
437 * AMD PCI vendor ID.
438 */
439#define PCN_VENDORID		0x1022
440
441/*
442 * AMD PCnet/PCI device IDs
443 */
444#define PCN_DEVICEID_PCNET	0x2000
445#define PCN_DEVICEID_HOME	0x2001
446
447struct pcn_type {
448	u_int16_t		pcn_vid;
449	u_int16_t		pcn_did;
450	const char		*pcn_name;
451};
452
453struct pcn_softc {
454	struct ifnet		*pcn_ifp;
455	bus_space_handle_t	pcn_bhandle;
456	bus_space_tag_t		pcn_btag;
457	struct resource		*pcn_res;
458	struct resource		*pcn_irq;
459	void			*pcn_intrhand;
460	device_t		pcn_miibus;
461	u_int8_t		pcn_link;
462	int8_t			pcn_extphyaddr;
463	int8_t			pcn_inst_10bt;
464	int			pcn_if_flags;
465	int			pcn_type;
466	struct pcn_list_data	*pcn_ldata;
467	struct pcn_ring_data	pcn_cdata;
468	struct callout		pcn_stat_callout;
469	struct mtx		pcn_mtx;
470	int			pcn_timer;
471};
472
473#define	PCN_LOCK(_sc)		mtx_lock(&(_sc)->pcn_mtx)
474#define	PCN_UNLOCK(_sc)		mtx_unlock(&(_sc)->pcn_mtx)
475#define	PCN_LOCK_ASSERT(_sc)	mtx_assert(&(_sc)->pcn_mtx, MA_OWNED)
476
477/*
478 * register space access macros
479 */
480#define CSR_WRITE_4(sc, reg, val)	\
481	bus_space_write_4(sc->pcn_btag, sc->pcn_bhandle, reg, val)
482
483#define CSR_READ_4(sc, reg)		\
484	bus_space_read_4(sc->pcn_btag, sc->pcn_bhandle, reg)
485
486#define CSR_WRITE_2(sc, reg, val)	\
487	bus_space_write_2(sc->pcn_btag, sc->pcn_bhandle, reg, val)
488
489#define CSR_READ_2(sc, reg)		\
490	bus_space_read_2(sc->pcn_btag, sc->pcn_bhandle, reg)
491
492#define PCN_TIMEOUT		1000
493#define ETHER_ALIGN		2
494#define PCN_RXLEN		1536
495#define PCN_MIN_FRAMELEN	60
496#define PCN_INC(x, y)		(x) = (x + 1) % y
497/*
498 * PCI low memory base and low I/O base register, and
499 * other PCI registers.
500 */
501
502#define PCN_PCI_VENDOR_ID	0x00
503#define PCN_PCI_DEVICE_ID	0x02
504#define PCN_PCI_COMMAND		0x04
505#define PCN_PCI_STATUS		0x06
506#define PCN_PCI_REVID		0x08
507#define PCN_PCI_CLASSCODE	0x09
508#define PCN_PCI_CACHELEN	0x0C
509#define PCN_PCI_LATENCY_TIMER	0x0D
510#define PCN_PCI_HEADER_TYPE	0x0E
511#define PCN_PCI_LOIO		0x10
512#define PCN_PCI_LOMEM		0x14
513#define PCN_PCI_BIOSROM		0x30
514#define PCN_PCI_INTLINE		0x3C
515#define PCN_PCI_INTPIN		0x3D
516#define PCN_PCI_MINGNT		0x3E
517#define PCN_PCI_MINLAT		0x3F
518#define PCN_PCI_RESETOPT	0x48
519#define PCN_PCI_EEPROM_DATA	0x4C
520
521/* power management registers */
522#define PCN_PCI_CAPID		0x50 /* 8 bits */
523#define PCN_PCI_NEXTPTR		0x51 /* 8 bits */
524#define PCN_PCI_PWRMGMTCAP	0x52 /* 16 bits */
525#define PCN_PCI_PWRMGMTCTRL	0x54 /* 16 bits */
526
527#define PCN_PSTATE_MASK		0x0003
528#define PCN_PSTATE_D0		0x0000
529#define PCN_PSTATE_D1		0x0001
530#define PCN_PSTATE_D2		0x0002
531#define PCN_PSTATE_D3		0x0003
532#define PCN_PME_EN		0x0010
533#define PCN_PME_STATUS		0x8000
534