1 /**************************************************************************
2 *
3 *    tlan.c -- Etherboot device driver for the Texas Instruments ThunderLAN
4 *    Written 2003-2003 by Timothy Legge <tlegge@rogers.com>
5 *
6 *    This program is free software; you can redistribute it and/or modify
7 *    it under the terms of the GNU General Public License as published by
8 *    the Free Software Foundation; either version 2 of the License, or
9 *    (at your option) any later version.
10 *
11 *    This program is distributed in the hope that it will be useful,
12 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
13 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 *    GNU General Public License for more details.
15 *
16 *    You should have received a copy of the GNU General Public License
17 *    along with this program; if not, write to the Free Software
18 *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 *
20 *    Portions of this code (almost all) based on:
21 *               tlan.c: Linux ThunderLan Driver:
22 *
23 *				by James Banks
24 *
25 *  				(C) 1997-1998 Caldera, Inc.
26 *			  	(C) 1998 James Banks
27 *				(C) 1999-2001 Torben Mathiasen
28 *				(C) 2002 Samuel Chessman
29 *
30 *    REVISION HISTORY:
31 *    ================
32 *    v1.0	07-08-2003	timlegge	Initial not quite working version
33 *
34 * Indent Style: indent -kr -i8
35 ***************************************************************************/
36 
37 /*
38 #include <asm/io.h>
39 #include <asm/types.h>
40 #include <linux/netdevice.h>
41 */
42 
43 typedef unsigned char u8;
44 typedef signed char s8;
45 typedef unsigned short u16;
46 typedef signed short s16;
47 typedef unsigned int u32;
48 typedef signed int s32;
49 	/*****************************************************************
50 	 * TLan Definitions
51 	 *
52 	 ****************************************************************/
53 
54 #define FALSE			0
55 #define TRUE			1
56 
57 #define TLAN_MIN_FRAME_SIZE	64
58 #define TLAN_MAX_FRAME_SIZE	1600
59 
60 #define TLAN_NUM_RX_LISTS	4
61 #define TLAN_NUM_TX_LISTS	2
62 
63 #define TLAN_IGNORE		0
64 #define TLAN_RECORD		1
65 /*
66 #define TLAN_DBG(lvl, format, args...)	if (debug&lvl) printf("TLAN: " format, ##args );
67 */
68 #define TLAN_DEBUG_GNRL		0x0001
69 #define TLAN_DEBUG_TX		0x0002
70 #define TLAN_DEBUG_RX		0x0004
71 #define TLAN_DEBUG_LIST		0x0008
72 #define TLAN_DEBUG_PROBE	0x0010
73 
74 #define TX_TIMEOUT		(10*HZ)	/* We need time for auto-neg */
75 #define MAX_TLAN_BOARDS		8	/* Max number of boards installed at a time */
76 
77 
78 	/*****************************************************************
79 	 * Device Identification Definitions
80 	 *
81 	 ****************************************************************/
82 
83 #define PCI_DEVICE_ID_NETELLIGENT_10_T2			0xB012
84 #define PCI_DEVICE_ID_NETELLIGENT_10_100_WS_5100	0xB030
85 #ifndef PCI_DEVICE_ID_OLICOM_OC2183
86 #define PCI_DEVICE_ID_OLICOM_OC2183			0x0013
87 #endif
88 #ifndef PCI_DEVICE_ID_OLICOM_OC2325
89 #define PCI_DEVICE_ID_OLICOM_OC2325			0x0012
90 #endif
91 #ifndef PCI_DEVICE_ID_OLICOM_OC2326
92 #define PCI_DEVICE_ID_OLICOM_OC2326			0x0014
93 #endif
94 
95 typedef struct tlan_adapter_entry {
96 	u16 vendorId;
97 	u16 deviceId;
98 	char *deviceLabel;
99 	u32 flags;
100 	u16 addrOfs;
101 } TLanAdapterEntry;
102 
103 #define TLAN_ADAPTER_NONE		0x00000000
104 #define TLAN_ADAPTER_UNMANAGED_PHY	0x00000001
105 #define TLAN_ADAPTER_BIT_RATE_PHY	0x00000002
106 #define TLAN_ADAPTER_USE_INTERN_10	0x00000004
107 #define TLAN_ADAPTER_ACTIVITY_LED	0x00000008
108 
109 #define TLAN_SPEED_DEFAULT	0
110 #define TLAN_SPEED_10		10
111 #define TLAN_SPEED_100		100
112 
113 #define TLAN_DUPLEX_DEFAULT	0
114 #define TLAN_DUPLEX_HALF	1
115 #define TLAN_DUPLEX_FULL	2
116 
117 
118 
119 	/*****************************************************************
120 	 * EISA Definitions
121 	 *
122 	 ****************************************************************/
123 
124 #define EISA_ID      0xc80	/* EISA ID Registers */
125 #define EISA_ID0     0xc80	/* EISA ID Register 0 */
126 #define EISA_ID1     0xc81	/* EISA ID Register 1 */
127 #define EISA_ID2     0xc82	/* EISA ID Register 2 */
128 #define EISA_ID3     0xc83	/* EISA ID Register 3 */
129 #define EISA_CR      0xc84	/* EISA Control Register */
130 #define EISA_REG0    0xc88	/* EISA Configuration Register 0 */
131 #define EISA_REG1    0xc89	/* EISA Configuration Register 1 */
132 #define EISA_REG2    0xc8a	/* EISA Configuration Register 2 */
133 #define EISA_REG3    0xc8f	/* EISA Configuration Register 3 */
134 #define EISA_APROM   0xc90	/* Ethernet Address PROM */
135 
136 
137 
138 	/*****************************************************************
139 	 * Rx/Tx List Definitions
140 	 *
141 	 ****************************************************************/
142 
143 #define TLAN_BUFFERS_PER_LIST	10
144 #define TLAN_LAST_BUFFER	0x80000000
145 #define TLAN_CSTAT_UNUSED	0x8000
146 #define TLAN_CSTAT_FRM_CMP	0x4000
147 #define TLAN_CSTAT_READY	0x3000
148 #define TLAN_CSTAT_EOC		0x0800
149 #define TLAN_CSTAT_RX_ERROR	0x0400
150 #define TLAN_CSTAT_PASS_CRC	0x0200
151 #define TLAN_CSTAT_DP_PR	0x0100
152 
153 
154 
155 
156 
157 
158 	/*****************************************************************
159 	 * PHY definitions
160 	 *
161 	 ****************************************************************/
162 
163 #define TLAN_PHY_MAX_ADDR	0x1F
164 #define TLAN_PHY_NONE		0x20
165 
166 
167 
168 	/*****************************************************************
169 	 * TLan Driver Timer Definitions
170 	 *
171 	 ****************************************************************/
172 
173 #define TLAN_TIMER_LINK_BEAT		1
174 #define TLAN_TIMER_ACTIVITY		2
175 #define TLAN_TIMER_PHY_PDOWN		3
176 #define TLAN_TIMER_PHY_PUP		4
177 #define TLAN_TIMER_PHY_RESET		5
178 #define TLAN_TIMER_PHY_START_LINK	6
179 #define TLAN_TIMER_PHY_FINISH_AN	7
180 #define TLAN_TIMER_FINISH_RESET		8
181 
182 #define TLAN_TIMER_ACT_DELAY		(HZ/10)
183 
184 
185 
186 
187 	/*****************************************************************
188 	 * TLan Driver Eeprom Definitions
189 	 *
190 	 ****************************************************************/
191 
192 #define TLAN_EEPROM_ACK		0
193 #define TLAN_EEPROM_STOP	1
194 
195 
196 
197 
198 	/*****************************************************************
199 	 * Host Register Offsets and Contents
200 	 *
201 	 ****************************************************************/
202 
203 #define TLAN_HOST_CMD			0x00
204 #define 	TLAN_HC_GO		0x80000000
205 #define		TLAN_HC_STOP		0x40000000
206 #define		TLAN_HC_ACK		0x20000000
207 #define		TLAN_HC_CS_MASK		0x1FE00000
208 #define		TLAN_HC_EOC		0x00100000
209 #define		TLAN_HC_RT		0x00080000
210 #define		TLAN_HC_NES		0x00040000
211 #define		TLAN_HC_AD_RST		0x00008000
212 #define		TLAN_HC_LD_TMR		0x00004000
213 #define		TLAN_HC_LD_THR		0x00002000
214 #define		TLAN_HC_REQ_INT		0x00001000
215 #define		TLAN_HC_INT_OFF		0x00000800
216 #define		TLAN_HC_INT_ON		0x00000400
217 #define		TLAN_HC_AC_MASK		0x000000FF
218 #define TLAN_CH_PARM			0x04
219 #define TLAN_DIO_ADR			0x08
220 #define		TLAN_DA_ADR_INC		0x8000
221 #define		TLAN_DA_RAM_ADR		0x4000
222 #define TLAN_HOST_INT			0x0A
223 #define		TLAN_HI_IV_MASK		0x1FE0
224 #define		TLAN_HI_IT_MASK		0x001C
225 #define TLAN_DIO_DATA			0x0C
226 
227 
228 /* ThunderLAN Internal Register DIO Offsets */
229 
230 #define TLAN_NET_CMD			0x00
231 #define		TLAN_NET_CMD_NRESET	0x80
232 #define		TLAN_NET_CMD_NWRAP	0x40
233 #define		TLAN_NET_CMD_CSF	0x20
234 #define		TLAN_NET_CMD_CAF	0x10
235 #define		TLAN_NET_CMD_NOBRX	0x08
236 #define		TLAN_NET_CMD_DUPLEX	0x04
237 #define		TLAN_NET_CMD_TRFRAM	0x02
238 #define		TLAN_NET_CMD_TXPACE	0x01
239 #define TLAN_NET_SIO			0x01
240 #define 	TLAN_NET_SIO_MINTEN	0x80
241 #define		TLAN_NET_SIO_ECLOK	0x40
242 #define		TLAN_NET_SIO_ETXEN	0x20
243 #define		TLAN_NET_SIO_EDATA	0x10
244 #define		TLAN_NET_SIO_NMRST	0x08
245 #define		TLAN_NET_SIO_MCLK	0x04
246 #define		TLAN_NET_SIO_MTXEN	0x02
247 #define		TLAN_NET_SIO_MDATA	0x01
248 #define TLAN_NET_STS			0x02
249 #define		TLAN_NET_STS_MIRQ	0x80
250 #define		TLAN_NET_STS_HBEAT	0x40
251 #define		TLAN_NET_STS_TXSTOP	0x20
252 #define		TLAN_NET_STS_RXSTOP	0x10
253 #define		TLAN_NET_STS_RSRVD	0x0F
254 #define TLAN_NET_MASK			0x03
255 #define		TLAN_NET_MASK_MASK7	0x80
256 #define		TLAN_NET_MASK_MASK6	0x40
257 #define		TLAN_NET_MASK_MASK5	0x20
258 #define		TLAN_NET_MASK_MASK4	0x10
259 #define		TLAN_NET_MASK_RSRVD	0x0F
260 #define TLAN_NET_CONFIG			0x04
261 #define 	TLAN_NET_CFG_RCLK	0x8000
262 #define		TLAN_NET_CFG_TCLK	0x4000
263 #define		TLAN_NET_CFG_BIT	0x2000
264 #define		TLAN_NET_CFG_RXCRC	0x1000
265 #define		TLAN_NET_CFG_PEF	0x0800
266 #define		TLAN_NET_CFG_1FRAG	0x0400
267 #define		TLAN_NET_CFG_1CHAN	0x0200
268 #define		TLAN_NET_CFG_MTEST	0x0100
269 #define		TLAN_NET_CFG_PHY_EN	0x0080
270 #define		TLAN_NET_CFG_MSMASK	0x007F
271 #define TLAN_MAN_TEST			0x06
272 #define TLAN_DEF_VENDOR_ID		0x08
273 #define TLAN_DEF_DEVICE_ID		0x0A
274 #define TLAN_DEF_REVISION		0x0C
275 #define TLAN_DEF_SUBCLASS		0x0D
276 #define TLAN_DEF_MIN_LAT		0x0E
277 #define TLAN_DEF_MAX_LAT		0x0F
278 #define TLAN_AREG_0			0x10
279 #define TLAN_AREG_1			0x16
280 #define TLAN_AREG_2			0x1C
281 #define TLAN_AREG_3			0x22
282 #define TLAN_HASH_1			0x28
283 #define TLAN_HASH_2			0x2C
284 #define TLAN_GOOD_TX_FRMS		0x30
285 #define TLAN_TX_UNDERUNS		0x33
286 #define TLAN_GOOD_RX_FRMS		0x34
287 #define TLAN_RX_OVERRUNS		0x37
288 #define TLAN_DEFERRED_TX		0x38
289 #define TLAN_CRC_ERRORS			0x3A
290 #define TLAN_CODE_ERRORS		0x3B
291 #define TLAN_MULTICOL_FRMS		0x3C
292 #define TLAN_SINGLECOL_FRMS		0x3E
293 #define TLAN_EXCESSCOL_FRMS		0x40
294 #define TLAN_LATE_COLS			0x41
295 #define TLAN_CARRIER_LOSS		0x42
296 #define TLAN_ACOMMIT			0x43
297 #define TLAN_LED_REG			0x44
298 #define		TLAN_LED_ACT		0x10
299 #define		TLAN_LED_LINK		0x01
300 #define TLAN_BSIZE_REG			0x45
301 #define TLAN_MAX_RX			0x46
302 #define TLAN_INT_DIS			0x48
303 #define		TLAN_ID_TX_EOC		0x04
304 #define		TLAN_ID_RX_EOF		0x02
305 #define		TLAN_ID_RX_EOC		0x01
306 
307 
308 
309 /* ThunderLAN Interrupt Codes */
310 
311 #define TLAN_INT_NUMBER_OF_INTS	8
312 
313 #define TLAN_INT_NONE			0x0000
314 #define TLAN_INT_TX_EOF			0x0001
315 #define TLAN_INT_STAT_OVERFLOW		0x0002
316 #define TLAN_INT_RX_EOF			0x0003
317 #define TLAN_INT_DUMMY			0x0004
318 #define TLAN_INT_TX_EOC			0x0005
319 #define TLAN_INT_STATUS_CHECK		0x0006
320 #define TLAN_INT_RX_EOC			0x0007
321 
322 
323 
324 /* ThunderLAN MII Registers */
325 
326 /* Generic MII/PHY Registers */
327 
328 #define MII_GEN_CTL			0x00
329 #define 	MII_GC_RESET		0x8000
330 #define		MII_GC_LOOPBK		0x4000
331 #define		MII_GC_SPEEDSEL		0x2000
332 #define		MII_GC_AUTOENB		0x1000
333 #define		MII_GC_PDOWN		0x0800
334 #define		MII_GC_ISOLATE		0x0400
335 #define		MII_GC_AUTORSRT		0x0200
336 #define		MII_GC_DUPLEX		0x0100
337 #define		MII_GC_COLTEST		0x0080
338 #define		MII_GC_RESERVED		0x007F
339 #define MII_GEN_STS			0x01
340 #define		MII_GS_100BT4		0x8000
341 #define		MII_GS_100BTXFD		0x4000
342 #define		MII_GS_100BTXHD		0x2000
343 #define		MII_GS_10BTFD		0x1000
344 #define		MII_GS_10BTHD		0x0800
345 #define		MII_GS_RESERVED		0x07C0
346 #define		MII_GS_AUTOCMPLT	0x0020
347 #define		MII_GS_RFLT		0x0010
348 #define		MII_GS_AUTONEG		0x0008
349 #define		MII_GS_LINK		0x0004
350 #define		MII_GS_JABBER		0x0002
351 #define		MII_GS_EXTCAP		0x0001
352 #define MII_GEN_ID_HI			0x02
353 #define MII_GEN_ID_LO			0x03
354 #define 	MII_GIL_OUI		0xFC00
355 #define 	MII_GIL_MODEL		0x03F0
356 #define 	MII_GIL_REVISION	0x000F
357 #define MII_AN_ADV			0x04
358 #define MII_AN_LPA			0x05
359 #define MII_AN_EXP			0x06
360 
361 /* ThunderLAN Specific MII/PHY Registers */
362 
363 #define TLAN_TLPHY_ID			0x10
364 #define TLAN_TLPHY_CTL			0x11
365 #define 	TLAN_TC_IGLINK		0x8000
366 #define		TLAN_TC_SWAPOL		0x4000
367 #define		TLAN_TC_AUISEL		0x2000
368 #define		TLAN_TC_SQEEN		0x1000
369 #define		TLAN_TC_MTEST		0x0800
370 #define		TLAN_TC_RESERVED	0x07F8
371 #define		TLAN_TC_NFEW		0x0004
372 #define		TLAN_TC_INTEN		0x0002
373 #define		TLAN_TC_TINT		0x0001
374 #define TLAN_TLPHY_STS			0x12
375 #define		TLAN_TS_MINT		0x8000
376 #define		TLAN_TS_PHOK		0x4000
377 #define		TLAN_TS_POLOK		0x2000
378 #define		TLAN_TS_TPENERGY	0x1000
379 #define		TLAN_TS_RESERVED	0x0FFF
380 #define TLAN_TLPHY_PAR			0x19
381 #define		TLAN_PHY_CIM_STAT	0x0020
382 #define		TLAN_PHY_SPEED_100	0x0040
383 #define		TLAN_PHY_DUPLEX_FULL	0x0080
384 #define		TLAN_PHY_AN_EN_STAT     0x0400
385 
386 /* National Sem. & Level1 PHY id's */
387 #define NAT_SEM_ID1			0x2000
388 #define NAT_SEM_ID2			0x5C01
389 #define LEVEL1_ID1			0x7810
390 #define LEVEL1_ID2			0x0000
391 
392 #define CIRC_INC( a, b ) if ( ++a >= b ) a = 0
393 
394 /* Routines to access internal registers. */
395 
TLan_DioRead8(u16 base_addr,u16 internal_addr)396 inline u8 TLan_DioRead8(u16 base_addr, u16 internal_addr)
397 {
398 	outw(internal_addr, base_addr + TLAN_DIO_ADR);
399 	return (inb((base_addr + TLAN_DIO_DATA) + (internal_addr & 0x3)));
400 
401 }				/* TLan_DioRead8 */
402 
403 
404 
405 
TLan_DioRead16(u16 base_addr,u16 internal_addr)406 inline u16 TLan_DioRead16(u16 base_addr, u16 internal_addr)
407 {
408 	outw(internal_addr, base_addr + TLAN_DIO_ADR);
409 	return (inw((base_addr + TLAN_DIO_DATA) + (internal_addr & 0x2)));
410 
411 }				/* TLan_DioRead16 */
412 
413 
414 
415 
TLan_DioRead32(u16 base_addr,u16 internal_addr)416 inline u32 TLan_DioRead32(u16 base_addr, u16 internal_addr)
417 {
418 	outw(internal_addr, base_addr + TLAN_DIO_ADR);
419 	return (inl(base_addr + TLAN_DIO_DATA));
420 
421 }				/* TLan_DioRead32 */
422 
423 
424 
425 
TLan_DioWrite8(u16 base_addr,u16 internal_addr,u8 data)426 inline void TLan_DioWrite8(u16 base_addr, u16 internal_addr, u8 data)
427 {
428 	outw(internal_addr, base_addr + TLAN_DIO_ADR);
429 	outb(data, base_addr + TLAN_DIO_DATA + (internal_addr & 0x3));
430 
431 }
432 
433 
434 
435 
TLan_DioWrite16(u16 base_addr,u16 internal_addr,u16 data)436 inline void TLan_DioWrite16(u16 base_addr, u16 internal_addr, u16 data)
437 {
438 	outw(internal_addr, base_addr + TLAN_DIO_ADR);
439 	outw(data, base_addr + TLAN_DIO_DATA + (internal_addr & 0x2));
440 
441 }
442 
443 
444 
445 
TLan_DioWrite32(u16 base_addr,u16 internal_addr,u32 data)446 inline void TLan_DioWrite32(u16 base_addr, u16 internal_addr, u32 data)
447 {
448 	outw(internal_addr, base_addr + TLAN_DIO_ADR);
449 	outl(data, base_addr + TLAN_DIO_DATA + (internal_addr & 0x2));
450 
451 }
452 
453 
454 
455 #if 0
456 inline void TLan_ClearBit(u8 bit, u16 port)
457 {
458 	outb_p(inb_p(port) & ~bit, port);
459 }
460 
461 
462 
463 
464 inline int TLan_GetBit(u8 bit, u16 port)
465 {
466 	return ((int) (inb_p(port) & bit));
467 }
468 
469 
470 
471 
472 inline void TLan_SetBit(u8 bit, u16 port)
473 {
474 	outb_p(inb_p(port) | bit, port);
475 }
476 #endif
477 
478 #define TLan_ClearBit( bit, port )	outb_p(inb_p(port) & ~bit, port)
479 #define TLan_GetBit( bit, port )	((int) (inb_p(port) & bit))
480 #define TLan_SetBit( bit, port )	outb_p(inb_p(port) | bit, port)
481 
482 #ifdef I_LIKE_A_FAST_HASH_FUNCTION
483 /* given 6 bytes, view them as 8 6-bit numbers and return the XOR of those */
484 /* the code below is about seven times as fast as the original code */
TLan_HashFunc(u8 * a)485 inline u32 TLan_HashFunc(u8 * a)
486 {
487 	u8 hash;
488 
489 	hash = (a[0] ^ a[3]);	/* & 077 */
490 	hash ^= ((a[0] ^ a[3]) >> 6);	/* & 003 */
491 	hash ^= ((a[1] ^ a[4]) << 2);	/* & 074 */
492 	hash ^= ((a[1] ^ a[4]) >> 4);	/* & 017 */
493 	hash ^= ((a[2] ^ a[5]) << 4);	/* & 060 */
494 	hash ^= ((a[2] ^ a[5]) >> 2);	/* & 077 */
495 
496 	return (hash & 077);
497 }
498 
499 #else				/* original code */
500 
xor(u32 a,u32 b)501 inline u32 xor(u32 a, u32 b)
502 {
503 	return ((a && !b) || (!a && b));
504 }
505 
506 #define XOR8( a, b, c, d, e, f, g, h )	xor( a, xor( b, xor( c, xor( d, xor( e, xor( f, xor( g, h ) ) ) ) ) ) )
507 #define DA( a, bit )					( ( (u8) a[bit/8] ) & ( (u8) ( 1 << bit%8 ) ) )
508 
TLan_HashFunc(u8 * a)509 inline u32 TLan_HashFunc(u8 * a)
510 {
511 	u32 hash;
512 
513 	hash =
514 	    XOR8(DA(a, 0), DA(a, 6), DA(a, 12), DA(a, 18), DA(a, 24),
515 		 DA(a, 30), DA(a, 36), DA(a, 42));
516 	hash |=
517 	    XOR8(DA(a, 1), DA(a, 7), DA(a, 13), DA(a, 19), DA(a, 25),
518 		 DA(a, 31), DA(a, 37), DA(a, 43)) << 1;
519 	hash |=
520 	    XOR8(DA(a, 2), DA(a, 8), DA(a, 14), DA(a, 20), DA(a, 26),
521 		 DA(a, 32), DA(a, 38), DA(a, 44)) << 2;
522 	hash |=
523 	    XOR8(DA(a, 3), DA(a, 9), DA(a, 15), DA(a, 21), DA(a, 27),
524 		 DA(a, 33), DA(a, 39), DA(a, 45)) << 3;
525 	hash |=
526 	    XOR8(DA(a, 4), DA(a, 10), DA(a, 16), DA(a, 22), DA(a, 28),
527 		 DA(a, 34), DA(a, 40), DA(a, 46)) << 4;
528 	hash |=
529 	    XOR8(DA(a, 5), DA(a, 11), DA(a, 17), DA(a, 23), DA(a, 29),
530 		 DA(a, 35), DA(a, 41), DA(a, 47)) << 5;
531 
532 	return hash;
533 
534 }
535 
536 #endif				/* I_LIKE_A_FAST_HASH_FUNCTION */
537