xref: /dragonfly/sys/dev/netif/vr/if_vrreg.h (revision b373db6a1aa0d43a79a3d0234a384a8a88a1d21e)
1 /*
2  * Copyright (c) 1997, 1998
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_vrreg.h,v 1.7.2.5 2003/02/06 04:46:20 silby Exp $
33  * $DragonFly: src/sys/dev/netif/vr/if_vrreg.h,v 1.10 2007/09/09 03:51:25 sephe Exp $
34  */
35 
36 /*
37  * Rhine register definitions.
38  */
39 
40 #define VR_PAR0                         0x00      /* node address 0 to 4 */
41 #define VR_PAR1                         0x04      /* node address 2 to 6 */
42 #define VR_RXCFG              0x06      /* receiver config register */
43 #define VR_TXCFG              0x07      /* transmit config register */
44 #define VR_COMMAND            0x08      /* command register */
45 #define VR_ISR                          0x0C      /* interrupt/status register */
46 #define VR_IMR                          0x0E      /* interrupt mask register */
47 #define VR_MAR0                         0x10      /* multicast hash 0 */
48 #define VR_MAR1                         0x14      /* multicast hash 1 */
49 #define VR_RXADDR             0x18      /* rx descriptor list start addr */
50 #define VR_TXADDR             0x1C      /* tx descriptor list start addr */
51 #define VR_CURRXDESC0                   0x20
52 #define VR_CURRXDESC1                   0x24
53 #define VR_CURRXDESC2                   0x28
54 #define VR_CURRXDESC3                   0x2C
55 #define VR_NEXTRXDESC0                  0x30
56 #define VR_NEXTRXDESC1                  0x34
57 #define VR_NEXTRXDESC2                  0x38
58 #define VR_NEXTRXDESC3                  0x3C
59 #define VR_CURTXDESC0                   0x40
60 #define VR_CURTXDESC1                   0x44
61 #define VR_CURTXDESC2                   0x48
62 #define VR_CURTXDESC3                   0x4C
63 #define VR_NEXTTXDESC0                  0x50
64 #define VR_NEXTTXDESC1                  0x54
65 #define VR_NEXTTXDESC2                  0x58
66 #define VR_NEXTTXDESC3                  0x5C
67 #define VR_CURRXDMA           0x60      /* current RX DMA address */
68 #define VR_CURTXDMA           0x64      /* current TX DMA address */
69 #define VR_TALLYCNT           0x68      /* tally counter test register */
70 #define VR_PHYADDR            0x6C
71 #define VR_MIISTAT            0x6D
72 #define VR_BCR0                         0x6E
73 #define VR_BCR1                         0x6F
74 #define VR_MIICMD             0x70
75 #define VR_MIIADDR            0x71
76 #define VR_MIIDATA            0x72
77 #define VR_EECSR              0x74
78 #define VR_TEST                         0x75
79 #define VR_GPIO                         0x76
80 #define VR_CONFIG             0x78
81 #define VR_MPA_CNT            0x7C
82 #define VR_CRC_CNT            0x7E
83 #define VR_STICKHW            0x83
84 
85 /* Misc Registers */
86 #define VR_MISC_CR1           0x81
87 #define VR_MISCCR1_FORSRST    0x40
88 
89 /*
90  * RX config bits.
91  */
92 #define VR_RXCFG_RX_ERRPKTS   0x01
93 #define VR_RXCFG_RX_RUNT      0x02
94 #define VR_RXCFG_RX_MULTI     0x04
95 #define VR_RXCFG_RX_BROAD     0x08
96 #define VR_RXCFG_RX_PROMISC   0x10
97 #define VR_RXCFG_RX_THRESH    0xE0
98 
99 #define VR_RXTHRESH_32BYTES   0x00
100 #define VR_RXTHRESH_64BYTES   0x20
101 #define VR_RXTHRESH_128BYTES  0x40
102 #define VR_RXTHRESH_256BYTES  0x60
103 #define VR_RXTHRESH_512BYTES  0x80
104 #define VR_RXTHRESH_768BYTES  0xA0
105 #define VR_RXTHRESH_1024BYTES 0xC0
106 #define VR_RXTHRESH_STORENFWD 0xE0
107 
108 /*
109  * TX config bits.
110  */
111 #define VR_TXCFG_RSVD0                  0x01
112 #define VR_TXCFG_LOOPBKMODE   0x06
113 #define VR_TXCFG_BACKOFF      0x08
114 #define VR_TXCFG_RSVD1                  0x10
115 #define VR_TXCFG_TX_THRESH    0xE0
116 
117 #define VR_TXTHRESH_32BYTES   0x00
118 #define VR_TXTHRESH_64BYTES   0x20
119 #define VR_TXTHRESH_128BYTES  0x40
120 #define VR_TXTHRESH_256BYTES  0x60
121 #define VR_TXTHRESH_512BYTES  0x80
122 #define VR_TXTHRESH_768BYTES  0xA0
123 #define VR_TXTHRESH_1024BYTES 0xC0
124 #define VR_TXTHRESH_STORENFWD 0xE0
125 
126 /*
127  * Command register bits.
128  */
129 #define VR_CMD_INIT           0x0001
130 #define VR_CMD_START                    0x0002
131 #define VR_CMD_STOP           0x0004
132 #define VR_CMD_RX_ON                    0x0008
133 #define VR_CMD_TX_ON                    0x0010
134 #define   VR_CMD_TX_GO                  0x0020
135 #define VR_CMD_RX_GO                    0x0040
136 #define VR_CMD_RSVD           0x0080
137 #define VR_CMD_RX_EARLY                 0x0100
138 #define VR_CMD_TX_EARLY                 0x0200
139 #define VR_CMD_FULLDUPLEX     0x0400
140 #define VR_CMD_TX_NOPOLL      0x0800
141 
142 #define VR_CMD_RESET                    0x8000
143 
144 /*
145  * Interrupt status bits.
146  */
147 #define VR_ISR_RX_OK                    0x0001    /* packet rx ok */
148 #define VR_ISR_TX_OK                    0x0002    /* packet tx ok */
149 #define VR_ISR_RX_ERR                   0x0004    /* packet rx with err */
150 #define VR_ISR_TX_ABRT                  0x0008    /* tx aborted due to excess colls */
151 #define VR_ISR_TX_UNDERRUN    0x0010    /* tx buffer underflow */
152 #define VR_ISR_RX_NOBUF                 0x0020    /* no rx buffer available */
153 #define VR_ISR_BUSERR                   0x0040    /* PCI bus error */
154 #define VR_ISR_STATSOFLOW     0x0080    /* stats counter oflow */
155 #define VR_ISR_RX_EARLY                 0x0100    /* rx early */
156 #define VR_ISR_LINKSTAT                 0x0200    /* MII status change */
157 #define VR_ISR_ETI            0x0200    /* Tx early (3043/3071) */
158 #define VR_ISR_UDFI           0x0200    /* Tx FIFO underflow (3065) */
159 #define VR_ISR_RX_OFLOW                 0x0400    /* rx FIFO overflow */
160 #define VR_ISR_RX_DROPPED     0x0800
161 #define VR_ISR_RX_NOBUF2      0x1000
162 #define VR_ISR_TX_ABRT2                 0x2000
163 #define VR_ISR_LINKSTAT2      0x4000
164 #define VR_ISR_MAGICPACKET    0x8000
165 
166 /*
167  * Interrupt mask bits.
168  */
169 #define VR_IMR_RX_OK                    0x0001    /* packet rx ok */
170 #define VR_IMR_TX_OK                    0x0002    /* packet tx ok */
171 #define VR_IMR_RX_ERR                   0x0004    /* packet rx with err */
172 #define VR_IMR_TX_ABRT                  0x0008    /* tx aborted due to excess colls */
173 #define VR_IMR_TX_UNDERRUN    0x0010    /* tx buffer underflow */
174 #define VR_IMR_RX_NOBUF                 0x0020    /* no rx buffer available */
175 #define VR_IMR_BUSERR                   0x0040    /* PCI bus error */
176 #define VR_IMR_STATSOFLOW     0x0080    /* stats counter oflow */
177 #define VR_IMR_RX_EARLY                 0x0100    /* rx early */
178 #define VR_IMR_LINKSTAT                 0x0200    /* MII status change */
179 #define VR_IMR_RX_OFLOW                 0x0400    /* rx FIFO overflow */
180 #define VR_IMR_RX_DROPPED     0x0800
181 #define VR_IMR_RX_NOBUF2      0x1000
182 #define VR_IMR_TX_ABRT2                 0x2000
183 #define VR_IMR_LINKSTAT2      0x4000
184 #define VR_IMR_MAGICPACKET    0x8000
185 
186 #define VR_INTRS                                                                \
187           (VR_IMR_RX_OK|VR_IMR_TX_OK|VR_IMR_RX_NOBUF|                           \
188           VR_IMR_TX_ABRT|VR_IMR_TX_UNDERRUN|VR_IMR_BUSERR|            \
189           VR_IMR_RX_ERR|VR_ISR_RX_DROPPED)
190 
191 /*
192  * MII status register.
193  */
194 
195 #define VR_MIISTAT_SPEED      0x01
196 #define VR_MIISTAT_LINKFAULT  0x02
197 #define VR_MIISTAT_MGTREADERR 0x04
198 #define VR_MIISTAT_MIIERR     0x08
199 #define VR_MIISTAT_PHYOPT     0x10
200 #define VR_MIISTAT_MDC_SPEED  0x20
201 #define VR_MIISTAT_RSVD                 0x40
202 #define VR_MIISTAT_GPIO1POLL  0x80
203 
204 /*
205  * MII command register bits.
206  */
207 #define VR_MIICMD_CLK                   0x01
208 #define VR_MIICMD_DATAOUT     0x02
209 #define VR_MIICMD_DATAIN      0x04
210 #define VR_MIICMD_DIR                   0x08
211 #define VR_MIICMD_DIRECTPGM   0x10
212 #define VR_MIICMD_WRITE_ENB   0x20
213 #define VR_MIICMD_READ_ENB    0x40
214 #define VR_MIICMD_AUTOPOLL    0x80
215 
216 /*
217  * EEPROM control bits.
218  */
219 #define VR_EECSR_DATAIN                 0x01      /* data out */
220 #define VR_EECSR_DATAOUT      0x02      /* data in */
221 #define VR_EECSR_CLK                    0x04      /* clock */
222 #define VR_EECSR_CS           0x08      /* chip select */
223 #define VR_EECSR_DPM                    0x10
224 #define VR_EECSR_LOAD                   0x20
225 #define VR_EECSR_EMBP                   0x40
226 #define VR_EECSR_EEPR                   0x80
227 
228 #define VR_EECMD_WRITE                  0x140
229 #define VR_EECMD_READ                   0x180
230 #define VR_EECMD_ERASE                  0x1c0
231 
232 /*
233  * Test register bits.
234  */
235 #define VR_TEST_TEST0                   0x01
236 #define VR_TEST_TEST1                   0x02
237 #define VR_TEST_TEST2                   0x04
238 #define VR_TEST_TSTUD                   0x08
239 #define VR_TEST_TSTOV                   0x10
240 #define VR_TEST_BKOFF                   0x20
241 #define VR_TEST_FCOL                    0x40
242 #define VR_TEST_HBDES                   0x80
243 
244 /*
245  * Config register bits.
246  */
247 #define VR_CFG_GPIO2OUTENB    0x00000001
248 #define VR_CFG_GPIO2OUT                 0x00000002          /* gen. purp. pin */
249 #define VR_CFG_GPIO2IN                  0x00000004          /* gen. purp. pin */
250 #define VR_CFG_AUTOOPT                  0x00000008          /* enable rx/tx autopoll */
251 #define VR_CFG_MIIOPT                   0x00000010
252 #define VR_CFG_MMIENB                   0x00000020          /* memory mapped mode enb */
253 #define VR_CFG_JUMPER                   0x00000040          /* PHY and oper. mode select */
254 #define VR_CFG_EELOAD                   0x00000080          /* enable EEPROM programming */
255 #define VR_CFG_LATMENB                  0x00000100          /* larency timer effect enb. */
256 #define VR_CFG_MRREADWAIT     0x00000200
257 #define VR_CFG_MRWRITEWAIT    0x00000400
258 #define VR_CFG_RX_ARB                   0x00000800
259 #define VR_CFG_TX_ARB                   0x00001000
260 #define VR_CFG_READMULTI      0x00002000
261 #define VR_CFG_TX_PACE                  0x00004000
262 #define VR_CFG_TX_QDIS                  0x00008000
263 #define VR_CFG_ROMSEL0                  0x00010000
264 #define VR_CFG_ROMSEL1                  0x00020000
265 #define VR_CFG_ROMSEL2                  0x00040000
266 #define VR_CFG_ROMTIMESEL     0x00080000
267 #define VR_CFG_RSVD0                    0x00100000
268 #define VR_CFG_ROMDLY                   0x00200000
269 #define VR_CFG_ROMOPT                   0x00400000
270 #define VR_CFG_RSVD1                    0x00800000
271 #define VR_CFG_BACKOFFOPT     0x01000000
272 #define VR_CFG_BACKOFFMOD     0x02000000
273 #define VR_CFG_CAPEFFECT      0x04000000
274 #define VR_CFG_BACKOFFRAND    0x08000000
275 #define VR_CFG_MAGICKPACKET   0x10000000
276 #define VR_CFG_PCIREADLINE    0x20000000
277 #define VR_CFG_DIAG           0x40000000
278 #define VR_CFG_GPIOEN                   0x80000000
279 
280 /* Sticky HW bits */
281 #define VR_STICKHW_DS0                  0x01
282 #define VR_STICKHW_DS1                  0x02
283 #define VR_STICKHW_WOL_ENB    0x04
284 #define VR_STICKHW_WOL_STS    0x08
285 #define VR_STICKHW_LEGWOL_ENB 0x80
286 
287 /*
288  * BCR0 register bits. (At least for the VT6102 chip.)
289  */
290 #define VR_BCR0_DMA_LENGTH    0x07
291 
292 #define VR_BCR0_DMA_32BYTES   0x00
293 #define VR_BCR0_DMA_64BYTES   0x01
294 #define VR_BCR0_DMA_128BYTES  0x02
295 #define VR_BCR0_DMA_256BYTES  0x03
296 #define VR_BCR0_DMA_512BYTES  0x04
297 #define VR_BCR0_DMA_1024BYTES 0x05
298 #define VR_BCR0_DMA_STORENFWD 0x07
299 
300 #define VR_BCR0_RX_THRESH     0x38
301 
302 #define VR_BCR0_RXTHRESHCFG   0x00
303 #define VR_BCR0_RXTHRESH64BYTES         0x08
304 #define VR_BCR0_RXTHRESH128BYTES 0x10
305 #define VR_BCR0_RXTHRESH256BYTES 0x18
306 #define VR_BCR0_RXTHRESH512BYTES 0x20
307 #define VR_BCR0_RXTHRESH1024BYTES 0x28
308 #define VR_BCR0_RXTHRESHSTORENFWD 0x38
309 #define VR_BCR0_EXTLED                  0x40
310 #define VR_BCR0_MED2                    0x80
311 
312 /*
313  * BCR1 register bits. (At least for the VT6102 chip.)
314  */
315 #define VR_BCR1_POT0                    0x01
316 #define VR_BCR1_POT1                    0x02
317 #define VR_BCR1_POT2                    0x04
318 #define VR_BCR1_TX_THRESH     0x38
319 #define VR_BCR1_TXTHRESHCFG   0x00
320 #define VR_BCR1_TXTHRESH64BYTES         0x08
321 #define VR_BCR1_TXTHRESH128BYTES 0x10
322 #define VR_BCR1_TXTHRESH256BYTES 0x18
323 #define VR_BCR1_TXTHRESH512BYTES 0x20
324 #define VR_BCR1_TXTHRESH1024BYTES 0x28
325 #define VR_BCR1_TXTHRESHSTORENFWD 0x38
326 
327 /*
328  * Rhine TX/RX list structure.
329  */
330 
331 struct vr_desc {
332           uint32_t            vr_status;
333           uint32_t            vr_ctl;
334           uint32_t            vr_ptr1;
335           uint32_t            vr_ptr2;
336 };
337 
338 #define vr_data               vr_ptr1
339 #define vr_next               vr_ptr2
340 
341 
342 #define VR_RXSTAT_RXERR                 0x00000001
343 #define VR_RXSTAT_CRCERR      0x00000002
344 #define VR_RXSTAT_FRAMEALIGNERR         0x00000004
345 #define VR_RXSTAT_FIFOOFLOW   0x00000008
346 #define VR_RXSTAT_GIANT                 0x00000010
347 #define VR_RXSTAT_RUNT                  0x00000020
348 #define VR_RXSTAT_BUSERR      0x00000040
349 #define VR_RXSTAT_BUFFERR     0x00000080
350 #define VR_RXSTAT_LASTFRAG    0x00000100
351 #define VR_RXSTAT_FIRSTFRAG   0x00000200
352 #define VR_RXSTAT_RLINK                 0x00000400
353 #define VR_RXSTAT_RX_PHYS     0x00000800
354 #define VR_RXSTAT_RX_BROAD    0x00001000
355 #define VR_RXSTAT_RX_MULTI    0x00002000
356 #define VR_RXSTAT_RX_OK                 0x00004000
357 #define VR_RXSTAT_RXLEN                 0x07FF0000
358 #define VR_RXSTAT_RXLEN_EXT   0x78000000
359 #define VR_RXSTAT_OWN                   0x80000000
360 
361 #define VR_RXBYTES(x)                   ((x & VR_RXSTAT_RXLEN) >> 16)
362 #define VR_RXSTAT (VR_RXSTAT_FIRSTFRAG|VR_RXSTAT_LASTFRAG|VR_RXSTAT_OWN)
363 
364 #define VR_RXCTL_BUFLEN                 0x000007FF
365 #define VR_RXCTL_BUFLEN_EXT   0x00007800
366 #define VR_RXCTL_CHAIN                  0x00008000
367 #define VR_RXCTL_RX_INTR      0x00800000
368 
369 #define VR_RXCTL (VR_RXCTL_CHAIN|VR_RXCTL_RX_INTR)
370 
371 #define VR_TXSTAT_DEFER                 0x00000001
372 #define VR_TXSTAT_UNDERRUN    0x00000002
373 #define VR_TXSTAT_COLLCNT     0x00000078
374 #define VR_TXSTAT_SQE                   0x00000080
375 #define VR_TXSTAT_ABRT                  0x00000100
376 #define VR_TXSTAT_LATECOLL    0x00000200
377 #define VR_TXSTAT_CARRLOST    0x00000400
378 #define VR_TXSTAT_UDF                   0x00000800
379 #define VR_TXSTAT_BUSERR      0x00002000
380 #define VR_TXSTAT_JABTIMEO    0x00004000
381 #define VR_TXSTAT_ERRSUM      0x00008000
382 #define VR_TXSTAT_OWN                   0x80000000
383 
384 #define VR_TXCTL_BUFLEN                 0x000007FF
385 #define VR_TXCTL_BUFLEN_EXT   0x00007800
386 #define VR_TXCTL_TLINK                  0x00008000
387 #define VR_TXCTL_FIRSTFRAG    0x00200000
388 #define VR_TXCTL_LASTFRAG     0x00400000
389 #define VR_TXCTL_FINT                   0x00800000
390 
391 
392 #define VR_MAXFRAGS           16
393 #define VR_RX_LIST_CNT                  256
394 #define VR_TX_LIST_CNT                  128
395 #define VR_MIN_FRAMELEN                 60
396 #define VR_FRAMELEN           1536
397 #define VR_RXLEN              1520
398 
399 #define VR_TXOWN(x)           x->vr_ptr->vr_status
400 
401 #define VR_TX_BUF_SIZE                  (VR_TX_LIST_CNT * MCLBYTES)
402 #define VR_TX_BUF(sc, i)      ((sc)->vr_cdata.vr_tx_buf + ((i) * MCLBYTES))
403 
404 struct vr_list_data {
405           struct vr_desc                vr_rx_list[VR_RX_LIST_CNT];
406           struct vr_desc                vr_tx_list[VR_TX_LIST_CNT];
407 };
408 
409 struct vr_chain {
410           struct vr_desc                *vr_ptr;
411           void                          *vr_buf;
412           vm_paddr_t                     vr_buf_paddr;
413           vm_paddr_t                     vr_next_desc_paddr;
414           int                            vr_next_idx;
415 };
416 
417 struct vr_chain_onefrag {
418           struct vr_desc                *vr_ptr;
419           struct mbuf                   *vr_mbuf;
420           struct vr_chain_onefrag       *vr_nextdesc;
421 };
422 
423 struct vr_chain_data {
424           struct vr_chain_onefrag        vr_rx_chain[VR_RX_LIST_CNT];
425           struct vr_chain                vr_tx_chain[VR_TX_LIST_CNT];
426 
427           struct vr_chain_onefrag       *vr_rx_head;
428 
429           int                            vr_tx_head_idx;
430           int                            vr_tx_tail_idx;
431           int                            vr_tx_free_idx;
432           caddr_t                        vr_tx_buf;         /* Pointer arith is needed. */
433 };
434 
435 struct vr_type {
436           uint16_t            vr_vid;
437           uint16_t            vr_did;
438           char                          *vr_name;
439 };
440 
441 struct vr_mii_frame {
442           uint8_t                       mii_stdelim;
443           uint8_t                       mii_opcode;
444           uint8_t                       mii_phyaddr;
445           uint8_t                       mii_regaddr;
446           uint8_t                       mii_turnaround;
447           uint16_t            mii_data;
448 };
449 
450 /*
451  * MII constants
452  */
453 #define VR_MII_STARTDELIM     0x01
454 #define VR_MII_READOP                   0x02
455 #define VR_MII_WRITEOP                  0x01
456 #define VR_MII_TURNAROUND     0x02
457 
458 #define VR_FLAG_FORCEDELAY    1
459 #define VR_FLAG_SCHEDDELAY    2
460 #define VR_FLAG_DELAYTIMEO    3
461 
462 struct vr_softc {
463           struct arpcom                 arpcom;             /* interface info */
464           bus_space_handle_t  vr_bhandle;         /* bus space handle */
465           bus_space_tag_t               vr_btag;  /* bus space tag */
466           struct resource               *vr_res;
467           struct resource               *vr_irq;
468           void                          *vr_intrhand;
469           device_t            vr_miibus;
470           uint8_t                       vr_revid; /* Rhine chip revision */
471           uint8_t                       vr_flags; /* See VR_F_* below */
472           struct ifpoll_compat          vr_npoll;
473           struct vr_list_data *vr_ldata;
474           struct vr_chain_data          vr_cdata;
475           struct callout                vr_stat_timer;
476 };
477 
478 #define VR_F_RESTART                    0x01                /* Restart unit on next tick */
479 
480 /*
481  * register space access macros
482  */
483 #define CSR_WRITE_4(sc, reg, val)       \
484           bus_space_write_4(sc->vr_btag, sc->vr_bhandle, reg, val)
485 #define CSR_WRITE_2(sc, reg, val)       \
486           bus_space_write_2(sc->vr_btag, sc->vr_bhandle, reg, val)
487 #define CSR_WRITE_1(sc, reg, val)       \
488           bus_space_write_1(sc->vr_btag, sc->vr_bhandle, reg, val)
489 
490 #define CSR_READ_4(sc, reg)             \
491           bus_space_read_4(sc->vr_btag, sc->vr_bhandle, reg)
492 #define CSR_READ_2(sc, reg)             \
493           bus_space_read_2(sc->vr_btag, sc->vr_bhandle, reg)
494 #define CSR_READ_1(sc, reg)             \
495           bus_space_read_1(sc->vr_btag, sc->vr_bhandle, reg)
496 
497 #define VR_TIMEOUT            1000
498 #define ETHER_ALIGN           2
499 
500 /*
501  * General constants that are fun to know.
502  *
503  * VIA Rhine revision IDs
504  */
505 
506 #define REV_ID_VT3043_E                           0x04
507 #define REV_ID_VT3071_A                           0x20
508 #define REV_ID_VT3071_B                           0x21
509 #define REV_ID_VT3065_A                           0x40
510 #define REV_ID_VT3065_B                           0x41
511 #define REV_ID_VT3065_C                           0x42
512 #define REV_ID_VT6102_APOLLO            0x74
513 #define REV_ID_VT3106                             0x80
514 #define REV_ID_VT3106_J                           0x80    /* 0x80-0x8F */
515 #define REV_ID_VT3106_S                           0x90    /* 0x90-0xA0 */
516 
517 /*
518  * PCI low memory base and low I/O base register, and
519  * other PCI registers.
520  */
521 
522 #define VR_PCI_VENDOR_ID      0x00
523 #define VR_PCI_DEVICE_ID      0x02
524 #define VR_PCI_COMMAND                  0x04
525 #define VR_PCI_STATUS                   0x06
526 #define VR_PCI_REVID                    0x08
527 #define VR_PCI_CLASSCODE      0x09
528 #define VR_PCI_LATENCY_TIMER  0x0D
529 #define VR_PCI_HEADER_TYPE    0x0E
530 #define VR_PCI_LOIO           0x10
531 #define VR_PCI_LOMEM                    0x14
532 #define VR_PCI_BIOSROM                  0x30
533 #define VR_PCI_INTLINE                  0x3C
534 #define VR_PCI_INTPIN                   0x3D
535 #define VR_PCI_MINGNT                   0x3E
536 #define VR_PCI_MINLAT                   0x0F
537 #define VR_PCI_RESETOPT                 0x48
538 #define VR_PCI_EEPROM_DATA    0x4C
539 #define VR_PCI_MODE           0x50
540 
541 #define VR_MODE3_MIION                  0x04
542 
543 /* power management registers */
544 #define VR_PCI_CAPID                    0xDC /* 8 bits */
545 #define VR_PCI_NEXTPTR                  0xDD /* 8 bits */
546 #define VR_PCI_PWRMGMTCAP     0xDE /* 16 bits */
547 #define VR_PCI_PWRMGMTCTRL    0xE0 /* 16 bits */
548 
549 #define VR_PSTATE_MASK                  0x0003
550 #define VR_PSTATE_D0                    0x0000
551 #define VR_PSTATE_D1                    0x0002
552 #define VR_PSTATE_D2                    0x0002
553 #define VR_PSTATE_D3                    0x0003
554 #define VR_PME_EN             0x0010
555 #define VR_PME_STATUS                   0x8000
556