aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/spider_net.h
blob: 3b8d951cf73c62c641fec8372e8ed9e21b2821c3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
/*
 * Network device driver for Cell Processor-Based Blade
 *
 * (C) Copyright IBM Corp. 2005
 *
 * Authors : Utz Bacher <utz.bacher@de.ibm.com>
 *           Jens Osterkamp <Jens.Osterkamp@de.ibm.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef _SPIDER_NET_H
#define _SPIDER_NET_H

#include "sungem_phy.h"

extern int spider_net_stop(struct net_device *netdev);
extern int spider_net_open(struct net_device *netdev);

extern struct ethtool_ops spider_net_ethtool_ops;

extern char spider_net_driver_name[];

#define SPIDER_NET_MAX_FRAME			2312
#define SPIDER_NET_MAX_MTU			2294
#define SPIDER_NET_MIN_MTU			64

#define SPIDER_NET_RXBUF_ALIGN			128

#define SPIDER_NET_RX_DESCRIPTORS_DEFAULT	256
#define SPIDER_NET_RX_DESCRIPTORS_MIN		16
#define SPIDER_NET_RX_DESCRIPTORS_MAX		512

#define SPIDER_NET_TX_DESCRIPTORS_DEFAULT	256
#define SPIDER_NET_TX_DESCRIPTORS_MIN		16
#define SPIDER_NET_TX_DESCRIPTORS_MAX		512

#define SPIDER_NET_TX_TIMER			20

#define SPIDER_NET_RX_CSUM_DEFAULT		1

#define SPIDER_NET_WATCHDOG_TIMEOUT		50*HZ
#define SPIDER_NET_NAPI_WEIGHT			64

#define SPIDER_NET_FIRMWARE_SEQS	6
#define SPIDER_NET_FIRMWARE_SEQWORDS	1024
#define SPIDER_NET_FIRMWARE_LEN		(SPIDER_NET_FIRMWARE_SEQS * \
					 SPIDER_NET_FIRMWARE_SEQWORDS * \
					 sizeof(u32))
#define SPIDER_NET_FIRMWARE_NAME	"spider_fw.bin"

/** spider_net SMMIO registers */
#define SPIDER_NET_GHIINT0STS		0x00000000
#define SPIDER_NET_GHIINT1STS		0x00000004
#define SPIDER_NET_GHIINT2STS		0x00000008
#define SPIDER_NET_GHIINT0MSK		0x00000010
#define SPIDER_NET_GHIINT1MSK		0x00000014
#define SPIDER_NET_GHIINT2MSK		0x00000018

#define SPIDER_NET_GRESUMINTNUM		0x00000020
#define SPIDER_NET_GREINTNUM		0x00000024

#define SPIDER_NET_GFFRMNUM		0x00000028
#define SPIDER_NET_GFAFRMNUM		0x0000002c
#define SPIDER_NET_GFBFRMNUM		0x00000030
#define SPIDER_NET_GFCFRMNUM		0x00000034
#define SPIDER_NET_GFDFRMNUM		0x00000038

/* clear them (don't use it) */
#define SPIDER_NET_GFREECNNUM		0x0000003c
#define SPIDER_NET_GONETIMENUM		0x00000040

#define SPIDER_NET_GTOUTFRMNUM		0x00000044

#define SPIDER_NET_GTXMDSET		0x00000050
#define SPIDER_NET_GPCCTRL		0x00000054
#define SPIDER_NET_GRXMDSET		0x00000058
#define SPIDER_NET_GIPSECINIT		0x0000005c
#define SPIDER_NET_GFTRESTRT		0x00000060
#define SPIDER_NET_GRXDMAEN		0x00000064
#define SPIDER_NET_GMRWOLCTRL		0x00000068
#define SPIDER_NET_GPCWOPCMD		0x0000006c
#define SPIDER_NET_GPCROPCMD		0x00000070
#define SPIDER_NET_GTTFRMCNT		0x00000078
#define SPIDER_NET_GTESTMD		0x0000007c

#define SPIDER_NET_GSINIT		0x00000080
#define SPIDER_NET_GSnPRGADR		0x00000084
#define SPIDER_NET_GSnPRGDAT		0x00000088

#define SPIDER_NET_GMACOPEMD		0x00000100
#define SPIDER_NET_GMACLENLMT		0x00000108
#define SPIDER_NET_GMACINTEN		0x00000118
#define SPIDER_NET_GMACPHYCTRL		0x00000120

#define SPIDER_NET_GMACAPAUSE		0x00000154
#define SPIDER_NET_GMACTXPAUSE		0x00000164

#define SPIDER_NET_GMACMODE		0x000001b0
#define SPIDER_NET_GMACBSTLMT		0x000001b4

#define SPIDER_NET_GMACUNIMACU		0x000001c0
#define SPIDER_NET_GMACUNIMACL		0x000001c8

#define SPIDER_NET_GMRMHFILnR		0x00000400
#define SPIDER_NET_MULTICAST_HASHES	256

#define SPIDER_NET_GMRUAFILnR		0x00000500
#define SPIDER_NET_GMRUA0FIL15R		0x00000578

#define SPIDER_NET_GTTQMSK		0x00000934

/* RX DMA controller registers, all 0x00000a.. are for DMA controller A,
 * 0x00000b.. for DMA controller B, etc. */
#define SPIDER_NET_GDADCHA		0x00000a00
#define SPIDER_NET_GDADMACCNTR		0x00000a04
#define SPIDER_NET_GDACTDPA		0x00000a08
#define SPIDER_NET_GDACTDCNT		0x00000a0c
#define SPIDER_NET_GDACDBADDR		0x00000a20
#define SPIDER_NET_GDACDBSIZE		0x00000a24
#define SPIDER_NET_GDACNEXTDA		0x00000a28
#define SPIDER_NET_GDACCOMST		0x00000a2c
#define SPIDER_NET_GDAWBCOMST		0x00000a30
#define SPIDER_NET_GDAWBRSIZE		0x00000a34
#define SPIDER_NET_GDAWBVSIZE		0x00000a38
#define SPIDER_NET_GDAWBTRST		0x00000a3c
#define SPIDER_NET_GDAWBTRERR		0x00000a40

/* TX DMA controller registers */
#define SPIDER_NET_GDTDCHA		0x00000e00
#define SPIDER_NET_GDTDMACCNTR		0x00000e04
#define SPIDER_NET_GDTCDPA		0x00000e08
#define SPIDER_NET_GDTDMASEL		0x00000e14

#define SPIDER_NET_ECMODE		0x00000f00
/* clock and reset control register */
#define SPIDER_NET_CKRCTRL		0x00000ff0

/** SCONFIG registers */
#define SPIDER_NET_SCONFIG_IOACTE	0x00002810

/** interrupt mask registers */
#define SPIDER_NET_INT0_MASK_VALUE	0x3f7fe2c7
#define SPIDER_NET_INT1_MASK_VALUE	0xffff7ff7
/* no MAC aborts -> auto retransmission */
#define SPIDER_NET_INT2_MASK_VALUE	0xffef7ff1

/* we rely on flagged descriptor interrupts */
#define SPIDER_NET_FRAMENUM_VALUE	0x00000000
/* set this first, then the FRAMENUM_VALUE */
#define SPIDER_NET_GFXFRAMES_VALUE	0x00000000

#define SPIDER_NET_STOP_SEQ_VALUE	0x00000000
#define SPIDER_NET_RUN_SEQ_VALUE	0x0000007e

#define SPIDER_NET_PHY_CTRL_VALUE	0x00040040
/* #define SPIDER_NET_PHY_CTRL_VALUE	0x01070080*/
#define SPIDER_NET_RXMODE_VALUE		0x00000011
/* auto retransmission in case of MAC aborts */
#define SPIDER_NET_TXMODE_VALUE		0x00010000
#define SPIDER_NET_RESTART_VALUE	0x00000000
#define SPIDER_NET_WOL_VALUE		0x00001111
#if 0
#define SPIDER_NET_WOL_VALUE		0x00000000
#endif
#define SPIDER_NET_IPSECINIT_VALUE	0x6f716f71

/* pause frames: automatic, no upper retransmission count */
/* outside loopback mode: ETOMOD signal dont matter, not connected */
#define SPIDER_NET_OPMODE_VALUE		0x00000063
/*#define SPIDER_NET_OPMODE_VALUE		0x001b0062*/
#define SPIDER_NET_LENLMT_VALUE		0x00000908

#define SPIDER_NET_MACAPAUSE_VALUE	0x00000800 /* about 1 ms */
#define SPIDER_NET_TXPAUSE_VALUE	0x00000000

#define SPIDER_NET_MACMODE_VALUE	0x00000001
#define SPIDER_NET_BURSTLMT_VALUE	0x00000200 /* about 16 us */

/* 1(0)					enable r/tx dma
 *  0000000				fixed to 0
 *
 *         000000			fixed to 0
 *               0(1)			en/disable descr writeback on force end
 *                0(1)			force end
 *
 *                 000000		fixed to 0
 *                       00		burst alignment: 128 bytes
 *
 *                         00000	fixed to 0
 *                              0	descr writeback size 32 bytes
 *                               0(1)	descr chain end interrupt enable
 *                                0(1)	descr status writeback enable */

/* to set RX_DMA_EN */
#define SPIDER_NET_DMA_RX_VALUE		0x80000000
#define SPIDER_NET_DMA_RX_FEND_VALUE	0x00030003
/* to set TX_DMA_EN */
#define SPIDER_NET_DMA_TX_VALUE		0x80000000
#define SPIDER_NET_DMA_TX_FEND_VALUE	0x00030003

/* SPIDER_NET_UA_DESCR_VALUE is OR'ed with the unicast address */
#define SPIDER_NET_UA_DESCR_VALUE	0x00080000
#define SPIDER_NET_PROMISC_VALUE	0x00080000
#define SPIDER_NET_NONPROMISC_VALUE	0x00000000

#define SPIDER_NET_DMASEL_VALUE		0x00000001

#define SPIDER_NET_ECMODE_VALUE		0x00000000

#define SPIDER_NET_CKRCTRL_RUN_VALUE	0x1fff010f
#define SPIDER_NET_CKRCTRL_STOP_VALUE	0x0000010f

#define SPIDER_NET_SBIMSTATE_VALUE	0x00000000
#define SPIDER_NET_SBTMSTATE_VALUE	0x00000000

/* SPIDER_NET_GHIINT0STS bits, in reverse order so that they can be used
 * with 1 << SPIDER_NET_... */
enum spider_net_int0_status {
	SPIDER_NET_GPHYINT = 0,
	SPIDER_NET_GMAC2INT,
	SPIDER_NET_GMAC1INT,
	SPIDER_NET_GIPSINT,
	SPIDER_NET_GFIFOINT,
	SPIDER_NET_GDMACINT,
	SPIDER_NET_GSYSINT,
	SPIDER_NET_GPWOPCMPINT,
	SPIDER_NET_GPROPCMPINT,
	SPIDER_NET_GPWFFINT,
	SPIDER_NET_GRMDADRINT,
	SPIDER_NET_GRMARPINT,
	SPIDER_NET_GRMMPINT,
	SPIDER_NET_GDTDEN0INT,
	SPIDER_NET_GDDDEN0INT,
	SPIDER_NET_GDCDEN0INT,
	SPIDER_NET_GDBDEN0INT,
	SPIDER_NET_GDADEN0INT,
	SPIDER_NET_GDTFDCINT,
	SPIDER_NET_GDDFDCINT,
	SPIDER_NET_GDCFDCINT,
	SPIDER_NET_GDBFDCINT,
	SPIDER_NET_GDAFDCINT,
	SPIDER_NET_GTTEDINT,
	SPIDER_NET_GDTDCEINT,
	SPIDER_NET_GRFDNMINT,
	SPIDER_NET_GRFCNMINT,
	SPIDER_NET_GRFBNMINT,
	SPIDER_NET_GRFANMINT,
	SPIDER_NET_GRFNMINT,
	SPIDER_NET_G1TMCNTINT,
	SPIDER_NET_GFREECNTINT
};
/* GHIINT1STS bits */
enum spider_net_int1_status {
	SPIDER_NET_GTMFLLINT = 0,
	SPIDER_NET_GRMFLLINT,
	SPIDER_NET_GTMSHTINT,
	SPIDER_NET_GDTINVDINT,
	SPIDER_NET_GRFDFLLINT,
	SPIDER_NET_GDDDCEINT,
	SPIDER_NET_GDDINVDINT,
	SPIDER_NET_GRFCFLLINT,
	SPIDER_NET_GDCDCEINT,
	SPIDER_NET_GDCINVDINT,
	SPIDER_NET_GRFBFLLINT,
	SPIDER_NET_GDBDCEINT,
	SPIDER_NET_GDBINVDINT,
	SPIDER_NET_GRFAFLLINT,
	SPIDER_NET_GDADCEINT,
	SPIDER_NET_GDAINVDINT,
	SPIDER_NET_GDTRSERINT,
	SPIDER_NET_GDDRSERINT,
	SPIDER_NET_GDCRSERINT,
	SPIDER_NET_GDBRSERINT,
	SPIDER_NET_GDARSERINT,
	SPIDER_NET_GDSERINT,
	SPIDER_NET_GDTPTERINT,
	SPIDER_NET_GDDPTERINT,
	SPIDER_NET_GDCPTERINT,
	SPIDER_NET_GDBPTERINT,
	SPIDER_NET_GDAPTERINT
};
/* GHIINT2STS bits */
enum spider_net_int2_status {
	SPIDER_NET_GPROPERINT = 0,
	SPIDER_NET_GMCTCRSNGINT,
	SPIDER_NET_GMCTLCOLINT,
	SPIDER_NET_GMCTTMOTINT,
	SPIDER_NET_GMCRCAERINT,
	SPIDER_NET_GMCRCALERINT,
	SPIDER_NET_GMCRALNERINT,
	SPIDER_NET_GMCROVRINT,
	SPIDER_NET_GMCRRNTINT,
	SPIDER_NET_GMCRRXERINT,
	SPIDER_NET_GTITCSERINT,
	SPIDER_NET_GTIFMTERINT,
	SPIDER_NET_GTIPKTRVKINT,
	SPIDER_NET_GTISPINGINT,
	SPIDER_NET_GTISADNGINT,
	SPIDER_NET_GTISPDNGINT,
	SPIDER_NET_GRIFMTERINT,
	SPIDER_NET_GRIPKTRVKINT,
	SPIDER_NET_GRISPINGINT,
	SPIDER_NET_GRISADNGINT,
	SPIDER_NET_GRISPDNGINT
};

#define SPIDER_NET_TXINT	( (1 << SPIDER_NET_GTTEDINT) | \
				  (1 << SPIDER_NET_GDTDCEINT) | \
				  (1 << SPIDER_NET_GDTFDCINT) )

/* we rely on flagged descriptor interrupts*/
#define SPIDER_NET_RXINT	( (1 << SPIDER_NET_GDAFDCINT) | \
				  (1 << SPIDER_NET_GRMFLLINT) )

#define SPIDER_NET_ERRINT	( 0xffffffff & \
				  (~SPIDER_NET_TXINT) & \
				  (~SPIDER_NET_RXINT) )

#define SPIDER_NET_GPREXEC		0x80000000
#define SPIDER_NET_GPRDAT_MASK		0x0000ffff

/* descriptor bits
 *
 * 1010					descriptor ready
 *     0				descr in middle of chain
 *      000				fixed to 0
 *
 *         0				no interrupt on completion
 *          000				fixed to 0
 *             1			no ipsec processing
 *              1			last descriptor for this frame
 *               00			no checksum
 *               10			tcp checksum
 *               11			udp checksum
 *
 *                 00			fixed to 0
 *                   0			fixed to 0
 *                    0			no interrupt on response errors
 *                     0		no interrupt on invalid descr
 *                      0		no interrupt on dma process termination
 *                       0		no interrupt on descr chain end
 *                        0		no interrupt on descr complete
 *
 *                         000		fixed to 0
 *                            0		response error interrupt status
 *                             0	invalid descr status
 *                              0	dma termination status
 *                               0	descr chain end status
 *                                0	descr complete status */
#define SPIDER_NET_DMAC_CMDSTAT_NOCS	0xa00c0000
#define SPIDER_NET_DMAC_CMDSTAT_TCPCS	0xa00e0000
#define SPIDER_NET_DMAC_CMDSTAT_UDPCS	0xa00f0000
#define SPIDER_NET_DESCR_IND_PROC_SHIFT	28
#define SPIDER_NET_DESCR_IND_PROC_MASKO	0x0fffffff

/* descr ready, descr is in middle of chain, get interrupt on completion */
#define SPIDER_NET_DMAC_RX_CARDOWNED	0xa0800000

enum spider_net_descr_status {
	SPIDER_NET_DESCR_COMPLETE		= 0x00, /* used in rx and tx */
	SPIDER_NET_DESCR_RESPONSE_ERROR		= 0x01, /* used in rx and tx */
	SPIDER_NET_DESCR_PROTECTION_ERROR	= 0x02, /* used in rx and tx */
	SPIDER_NET_DESCR_FRAME_END		= 0x04, /* used in rx */
	SPIDER_NET_DESCR_FORCE_END		= 0x05, /* used in rx and tx */
	SPIDER_NET_DESCR_CARDOWNED		= 0x0a, /* used in rx and tx */
	SPIDER_NET_DESCR_NOT_IN_USE /* any other value */
};

struct spider_net_descr {
	/* as defined by the hardware */
	u32 buf_addr;
	u32 buf_size;
	u32 next_descr_addr;
	u32 dmac_cmd_status;
	u32 result_size;
	u32 valid_size;	/* all zeroes for tx */
	u32 data_status;
	u32 data_error;	/* all zeroes for tx */

	/* used in the driver */
	struct sk_buff *skb;
	u32 bus_addr;
	struct spider_net_descr *next;
	struct spider_net_descr *prev;
} __attribute__((aligned(32)));

struct spider_net_descr_chain {
	/* we walk from tail to head */
	struct spider_net_descr *head;
	struct spider_net_descr *tail;
};

/* descriptor data_status bits */
#define SPIDER_NET_RX_IPCHK		29
#define SPIDER_NET_RX_TCPCHK		28
#define SPIDER_NET_VLAN_PACKET		21
#define SPIDER_NET_DATA_STATUS_CKSUM_MASK ( (1 << SPIDER_NET_RX_IPCHK) | \
					  (1 << SPIDER_NET_RX_TCPCHK) )

/* descriptor data_error bits */
#define SPIDER_NET_RX_IPCHKERR		27
#define SPIDER_NET_RX_RXTCPCHKERR	28

#define SPIDER_NET_DATA_ERR_CKSUM_MASK	(1 << SPIDER_NET_RX_IPCHKERR)

/* the cases we don't pass the packet to the stack.
 * 701b8000 would be correct, but every packets gets that flag */
#define SPIDER_NET_DESTROY_RX_FLAGS	0x700b8000

#define SPIDER_NET_DESCR_SIZE		32

/* this will be bigger some time */
struct spider_net_options {
	int rx_csum; /* for rx: if 0 ip_summed=NONE,
			if 1 and hw has verified, ip_summed=UNNECESSARY */
};

#define SPIDER_NET_DEFAULT_MSG		( NETIF_MSG_DRV | \
					  NETIF_MSG_PROBE | \
					  NETIF_MSG_LINK | \
					  NETIF_MSG_TIMER | \
					  NETIF_MSG_IFDOWN | \
					  NETIF_MSG_IFUP | \
					  NETIF_MSG_RX_ERR | \
					  NETIF_MSG_TX_ERR | \
					  NETIF_MSG_TX_QUEUED | \
					  NETIF_MSG_INTR | \
					  NETIF_MSG_TX_DONE | \
					  NETIF_MSG_RX_STATUS | \
					  NETIF_MSG_PKTDATA | \
					  NETIF_MSG_HW | \
					  NETIF_MSG_WOL )

struct spider_net_card {
	struct net_device *netdev;
	struct pci_dev *pdev;
	struct mii_phy phy;

	void __iomem *regs;

	struct spider_net_descr_chain tx_chain;
	struct spider_net_descr_chain rx_chain;
	atomic_t rx_chain_refill;
	atomic_t tx_chain_release;

	struct net_device_stats netdev_stats;

	struct spider_net_options options;

	spinlock_t intmask_lock;
	struct tasklet_struct rxram_full_tl;
	struct timer_list tx_timer;

	struct work_struct tx_timeout_task;
	atomic_t tx_timeout_task_counter;
	wait_queue_head_t waitq;

	/* for ethtool */
	int msg_enable;

	struct spider_net_descr descr[0];
};

#define pr_err(fmt,arg...) \
	printk(KERN_ERR fmt ,##arg)

#endif