aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/sh_eth.h
blob: ca2db6bb3c616ecc50ced9dc8c0f59babb0c375a (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
/*
 *  SuperH Ethernet device driver
 *
 *  Copyright (C) 2006-2008 Nobuhiro Iwamatsu
 *  Copyright (C) 2008 Renesas Solutions Corp.
 *
 *  This program is free software; you can redistribute it and/or modify it
 *  under the terms and conditions of the GNU General Public License,
 *  version 2, as published by the Free Software Foundation.
 *
 *  This program is distributed in the hope 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.,
 *  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
 *
 *  The full GNU General Public License is included in this distribution in
 *  the file called "COPYING".
 */

#ifndef __SH_ETH_H__
#define __SH_ETH_H__

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/spinlock.h>
#include <linux/workqueue.h>
#include <linux/netdevice.h>
#include <linux/phy.h>

#define CARDNAME	"sh-eth"
#define TX_TIMEOUT	(5*HZ)

#define TX_RING_SIZE	128	/* Tx ring size */
#define RX_RING_SIZE	128	/* Rx ring size */
#define RX_OFFSET		2	/* skb offset */
#define ETHERSMALL		60
#define PKT_BUF_SZ		1538

/* Chip Base Address */
#define SH_ETH0_BASE 0xA7000000
#define SH_ETH1_BASE 0xA7000400
#define SH_TSU_ADDR 0xA7000804

/* Chip Registers */
/* E-DMAC */
#define EDMR	0x0000
#define EDTRR	0x0004
#define EDRRR	0x0008
#define TDLAR	0x000C
#define RDLAR	0x0010
#define EESR	0x0014
#define EESIPR	0x0018
#define TRSCER	0x001C
#define RMFCR	0x0020
#define TFTR	0x0024
#define FDR		0x0028
#define RMCR	0x002C
#define EDOCR	0x0030
#define FCFTR	0x0034
#define RPADIR	0x0038
#define TRIMD	0x003C
#define RBWAR	0x0040
#define RDFAR	0x0044
#define TBRAR	0x004C
#define TDFAR	0x0050
/* Ether Register */
#define ECMR	0x0160
#define ECSR	0x0164
#define ECSIPR	0x0168
#define PIR		0x016C
#define MAHR	0x0170
#define MALR	0x0174
#define RFLR	0x0178
#define PSR		0x017C
#define TROCR	0x0180
#define CDCR	0x0184
#define LCCR	0x0188
#define CNDCR	0x018C
#define CEFCR	0x0194
#define FRECR	0x0198
#define TSFRCR	0x019C
#define TLFRCR	0x01A0
#define RFCR	0x01A4
#define MAFCR	0x01A8
#define IPGR	0x01B4
#if defined(CONFIG_CPU_SUBTYPE_SH7710)
#define APR		0x01B8
#define MPR 	0x01BC
#define TPAUSER 0x1C4
#define BCFR	0x1CC
#endif /* CONFIG_CPU_SH7710 */

#define ARSTR	0x0800

/* TSU */
#define TSU_CTRST	0x004
#define TSU_FWEN0	0x010
#define TSU_FWEN1	0x014
#define TSU_FCM		0x018
#define TSU_BSYSL0	0x020
#define TSU_BSYSL1	0x024
#define TSU_PRISL0	0x028
#define TSU_PRISL1	0x02C
#define TSU_FWSL0	0x030
#define TSU_FWSL1	0x034
#define TSU_FWSLC	0x038
#define TSU_QTAGM0	0x040
#define TSU_QTAGM1	0x044
#define TSU_ADQT0 	0x048
#define TSU_ADQT1	0x04C
#define TSU_FWSR	0x050
#define TSU_FWINMK	0x054
#define TSU_ADSBSY	0x060
#define TSU_TEN		0x064
#define TSU_POST1	0x070
#define TSU_POST2	0x074
#define TSU_POST3	0x078
#define TSU_POST4	0x07C
#define TXNLCR0		0x080
#define TXALCR0		0x084
#define RXNLCR0		0x088
#define RXALCR0		0x08C
#define FWNLCR0		0x090
#define FWALCR0		0x094
#define TXNLCR1		0x0A0
#define TXALCR1		0x0A4
#define RXNLCR1		0x0A8
#define RXALCR1		0x0AC
#define FWNLCR1		0x0B0
#define FWALCR1		0x0B4

#define TSU_ADRH0	0x0100
#define TSU_ADRL0	0x0104
#define TSU_ADRL31	0x01FC

/* Register's bits */

/* EDMR */
enum DMAC_M_BIT {
	EDMR_DL1 = 0x20, EDMR_DL0 = 0x10, EDMR_SRST = 0x01,
};

/* EDTRR */
enum DMAC_T_BIT {
	EDTRR_TRNS = 0x01,
};

/* EDRRR*/
enum EDRRR_R_BIT {
	EDRRR_R = 0x01,
};

/* TPAUSER */
enum TPAUSER_BIT {
	TPAUSER_TPAUSE = 0x0000ffff,
	TPAUSER_UNLIMITED = 0,
};

/* BCFR */
enum BCFR_BIT {
	BCFR_RPAUSE = 0x0000ffff,
	BCFR_UNLIMITED = 0,
};

/* PIR */
enum PIR_BIT {
	PIR_MDI = 0x08, PIR_MDO = 0x04, PIR_MMD = 0x02, PIR_MDC = 0x01,
};

/* PSR */
enum PHY_STATUS_BIT { PHY_ST_LINK = 0x01, };

/* EESR */
enum EESR_BIT {
	EESR_TWB = 0x40000000, EESR_TABT = 0x04000000,
	EESR_RABT = 0x02000000, EESR_RFRMER = 0x01000000,
	EESR_ADE = 0x00800000, EESR_ECI = 0x00400000,
	EESR_FTC = 0x00200000, EESR_TDE = 0x00100000,
	EESR_TFE = 0x00080000, EESR_FRC = 0x00040000,
	EESR_RDE = 0x00020000, EESR_RFE = 0x00010000,
	EESR_TINT4 = 0x00000800, EESR_TINT3 = 0x00000400,
	EESR_TINT2 = 0x00000200, EESR_TINT1 = 0x00000100,
	EESR_RINT8 = 0x00000080, EESR_RINT5 = 0x00000010,
	EESR_RINT4 = 0x00000008, EESR_RINT3 = 0x00000004,
	EESR_RINT2 = 0x00000002, EESR_RINT1 = 0x00000001,
};

#define EESR_ERR_CHECK	(EESR_TWB | EESR_TABT | EESR_RABT | EESR_RDE \
		| EESR_RFRMER | EESR_ADE | EESR_TFE | EESR_TDE | EESR_ECI)

/* EESIPR */
enum DMAC_IM_BIT {
	DMAC_M_TWB = 0x40000000, DMAC_M_TABT = 0x04000000,
	DMAC_M_RABT = 0x02000000,
	DMAC_M_RFRMER = 0x01000000, DMAC_M_ADF = 0x00800000,
	DMAC_M_ECI = 0x00400000, DMAC_M_FTC = 0x00200000,
	DMAC_M_TDE = 0x00100000, DMAC_M_TFE = 0x00080000,
	DMAC_M_FRC = 0x00040000, DMAC_M_RDE = 0x00020000,
	DMAC_M_RFE = 0x00010000, DMAC_M_TINT4 = 0x00000800,
	DMAC_M_TINT3 = 0x00000400, DMAC_M_TINT2 = 0x00000200,
	DMAC_M_TINT1 = 0x00000100, DMAC_M_RINT8 = 0x00000080,
	DMAC_M_RINT5 = 0x00000010, DMAC_M_RINT4 = 0x00000008,
	DMAC_M_RINT3 = 0x00000004, DMAC_M_RINT2 = 0x00000002,
	DMAC_M_RINT1 = 0x00000001,
};

/* Receive descriptor bit */
enum RD_STS_BIT {
	RD_RACT = 0x80000000, RC_RDEL = 0x40000000,
	RC_RFP1 = 0x20000000, RC_RFP0 = 0x10000000,
	RD_RFE = 0x08000000, RD_RFS10 = 0x00000200,
	RD_RFS9 = 0x00000100, RD_RFS8 = 0x00000080,
	RD_RFS7 = 0x00000040, RD_RFS6 = 0x00000020,
	RD_RFS5 = 0x00000010, RD_RFS4 = 0x00000008,
	RD_RFS3 = 0x00000004, RD_RFS2 = 0x00000002,
	RD_RFS1 = 0x00000001,
};
#define RDF1ST	RC_RFP1
#define RDFEND	RC_RFP0
#define RD_RFP	(RC_RFP1|RC_RFP0)

/* FCFTR */
enum FCFTR_BIT {
	FCFTR_RFF2 = 0x00040000, FCFTR_RFF1 = 0x00020000,
	FCFTR_RFF0 = 0x00010000, FCFTR_RFD2 = 0x00000004,
	FCFTR_RFD1 = 0x00000002, FCFTR_RFD0 = 0x00000001,
};
#define FIFO_F_D_RFF	(FCFTR_RFF2|FCFTR_RFF1|FCFTR_RFF0)
#define FIFO_F_D_RFD	(FCFTR_RFD2|FCFTR_RFD1|FCFTR_RFD0)

/* Transfer descriptor bit */
enum TD_STS_BIT {
	TD_TACT = 0x80000000, TD_TDLE = 0x40000000, TD_TFP1 = 0x20000000,
	TD_TFP0 = 0x10000000,
};
#define TDF1ST	TD_TFP1
#define TDFEND	TD_TFP0
#define TD_TFP	(TD_TFP1|TD_TFP0)

/* RMCR */
enum RECV_RST_BIT { RMCR_RST = 0x01, };
/* ECMR */
enum FELIC_MODE_BIT {
	ECMR_ZPF = 0x00080000, ECMR_PFR = 0x00040000, ECMR_RXF = 0x00020000,
	ECMR_TXF = 0x00010000, ECMR_MCT = 0x00002000, ECMR_PRCEF = 0x00001000,
	ECMR_PMDE = 0x00000200, ECMR_RE = 0x00000040, ECMR_TE = 0x00000020,
	ECMR_ILB = 0x00000008, ECMR_ELB = 0x00000004, ECMR_DM = 0x00000002,
	ECMR_PRM = 0x00000001,
};

/* ECSR */
enum ECSR_STATUS_BIT {
	ECSR_BRCRX = 0x20, ECSR_PSRTO = 0x10, ECSR_LCHNG = 0x04,
	ECSR_MPD = 0x02, ECSR_ICD = 0x01,
};

/* ECSIPR */
enum ECSIPR_STATUS_MASK_BIT {
	ECSIPR_BRCRXIP = 0x20, ECSIPR_PSRTOIP = 0x10, ECSIPR_LCHNGIP = 0x04,
	ECSIPR_MPDIP = 0x02, ECSIPR_ICDIP = 0x01,
};

/* APR */
enum APR_BIT {
	APR_AP = 0x00000001,
};

/* MPR */
enum MPR_BIT {
	MPR_MP = 0x00000001,
};

/* TRSCER */
enum DESC_I_BIT {
	DESC_I_TINT4 = 0x0800, DESC_I_TINT3 = 0x0400, DESC_I_TINT2 = 0x0200,
	DESC_I_TINT1 = 0x0100, DESC_I_RINT8 = 0x0080, DESC_I_RINT5 = 0x0010,
	DESC_I_RINT4 = 0x0008, DESC_I_RINT3 = 0x0004, DESC_I_RINT2 = 0x0002,
	DESC_I_RINT1 = 0x0001,
};

/* RPADIR */
enum RPADIR_BIT {
	RPADIR_PADS1 = 0x20000, RPADIR_PADS0 = 0x10000,
	RPADIR_PADR = 0x0003f,
};

/* FDR */
enum FIFO_SIZE_BIT {
	FIFO_SIZE_T = 0x00000700, FIFO_SIZE_R = 0x00000007,
};
enum phy_offsets {
	PHY_CTRL = 0, PHY_STAT = 1, PHY_IDT1 = 2, PHY_IDT2 = 3,
	PHY_ANA = 4, PHY_ANL = 5, PHY_ANE = 6,
	PHY_16 = 16,
};

/* PHY_CTRL */
enum PHY_CTRL_BIT {
	PHY_C_RESET = 0x8000, PHY_C_LOOPBK = 0x4000, PHY_C_SPEEDSL = 0x2000,
	PHY_C_ANEGEN = 0x1000, PHY_C_PWRDN = 0x0800, PHY_C_ISO = 0x0400,
	PHY_C_RANEG = 0x0200, PHY_C_DUPLEX = 0x0100, PHY_C_COLT = 0x0080,
};
#define DM9161_PHY_C_ANEGEN 0	/* auto nego special */

/* PHY_STAT */
enum PHY_STAT_BIT {
	PHY_S_100T4 = 0x8000, PHY_S_100X_F = 0x4000, PHY_S_100X_H = 0x2000,
	PHY_S_10T_F = 0x1000, PHY_S_10T_H = 0x0800, PHY_S_ANEGC = 0x0020,
	PHY_S_RFAULT = 0x0010, PHY_S_ANEGA = 0x0008, PHY_S_LINK = 0x0004,
	PHY_S_JAB = 0x0002, PHY_S_EXTD = 0x0001,
};

/* PHY_ANA */
enum PHY_ANA_BIT {
	PHY_A_NP = 0x8000, PHY_A_ACK = 0x4000, PHY_A_RF = 0x2000,
	PHY_A_FCS = 0x0400, PHY_A_T4 = 0x0200, PHY_A_FDX = 0x0100,
	PHY_A_HDX = 0x0080, PHY_A_10FDX = 0x0040, PHY_A_10HDX = 0x0020,
	PHY_A_SEL = 0x001f,
};
/* PHY_ANL */
enum PHY_ANL_BIT {
	PHY_L_NP = 0x8000, PHY_L_ACK = 0x4000, PHY_L_RF = 0x2000,
	PHY_L_FCS = 0x0400, PHY_L_T4 = 0x0200, PHY_L_FDX = 0x0100,
	PHY_L_HDX = 0x0080, PHY_L_10FDX = 0x0040, PHY_L_10HDX = 0x0020,
	PHY_L_SEL = 0x001f,
};

/* PHY_ANE */
enum PHY_ANE_BIT {
	PHY_E_PDF = 0x0010, PHY_E_LPNPA = 0x0008, PHY_E_NPA = 0x0004,
	PHY_E_PRX = 0x0002, PHY_E_LPANEGA = 0x0001,
};

/* DM9161 */
enum PHY_16_BIT {
	PHY_16_BP4B45 = 0x8000, PHY_16_BPSCR = 0x4000, PHY_16_BPALIGN = 0x2000,
	PHY_16_BP_ADPOK = 0x1000, PHY_16_Repeatmode = 0x0800,
	PHY_16_TXselect = 0x0400,
	PHY_16_Rsvd = 0x0200, PHY_16_RMIIEnable = 0x0100,
	PHY_16_Force100LNK = 0x0080,
	PHY_16_APDLED_CTL = 0x0040, PHY_16_COLLED_CTL = 0x0020,
	PHY_16_RPDCTR_EN = 0x0010,
	PHY_16_ResetStMch = 0x0008, PHY_16_PreamSupr = 0x0004,
	PHY_16_Sleepmode = 0x0002,
	PHY_16_RemoteLoopOut = 0x0001,
};

#define POST_RX		0x08
#define POST_FW		0x04
#define POST0_RX	(POST_RX)
#define POST0_FW	(POST_FW)
#define POST1_RX	(POST_RX >> 2)
#define POST1_FW	(POST_FW >> 2)
#define POST_ALL	(POST0_RX | POST0_FW | POST1_RX | POST1_FW)

/* ARSTR */
enum ARSTR_BIT { ARSTR_ARSTR = 0x00000001, };

/* TSU_FWEN0 */
enum TSU_FWEN0_BIT {
	TSU_FWEN0_0 = 0x00000001,
};

/* TSU_ADSBSY */
enum TSU_ADSBSY_BIT {
	TSU_ADSBSY_0 = 0x00000001,
};

/* TSU_TEN */
enum TSU_TEN_BIT {
	TSU_TEN_0 = 0x80000000,
};

/* TSU_FWSL0 */
enum TSU_FWSL0_BIT {
	TSU_FWSL0_FW50 = 0x1000, TSU_FWSL0_FW40 = 0x0800,
	TSU_FWSL0_FW30 = 0x0400, TSU_FWSL0_FW20 = 0x0200,
	TSU_FWSL0_FW10 = 0x0100, TSU_FWSL0_RMSA0 = 0x0010,
};

/* TSU_FWSLC */
enum TSU_FWSLC_BIT {
	TSU_FWSLC_POSTENU = 0x2000, TSU_FWSLC_POSTENL = 0x1000,
	TSU_FWSLC_CAMSEL03 = 0x0080, TSU_FWSLC_CAMSEL02 = 0x0040,
	TSU_FWSLC_CAMSEL01 = 0x0020, TSU_FWSLC_CAMSEL00 = 0x0010,
	TSU_FWSLC_CAMSEL13 = 0x0008, TSU_FWSLC_CAMSEL12 = 0x0004,
	TSU_FWSLC_CAMSEL11 = 0x0002, TSU_FWSLC_CAMSEL10 = 0x0001,
};

/*
 * The sh ether Tx buffer descriptors.
 * This structure should be 20 bytes.
 */
struct sh_eth_txdesc {
	u32 status;		/* TD0 */
#if defined(CONFIG_CPU_LITTLE_ENDIAN)
	u16 pad0;		/* TD1 */
	u16 buffer_length;	/* TD1 */
#else
	u16 buffer_length;	/* TD1 */
	u16 pad0;		/* TD1 */
#endif
	u32 addr;		/* TD2 */
	u32 pad1;		/* padding data */
};

/*
 * The sh ether Rx buffer descriptors.
 * This structure should be 20 bytes.
 */
struct sh_eth_rxdesc {
	u32 status;		/* RD0 */
#if defined(CONFIG_CPU_LITTLE_ENDIAN)
	u16 frame_length;	/* RD1 */
	u16 buffer_length;	/* RD1 */
#else
	u16 buffer_length;	/* RD1 */
	u16 frame_length;	/* RD1 */
#endif
	u32 addr;		/* RD2 */
	u32 pad0;		/* padding data */
};

struct sh_eth_private {
	dma_addr_t rx_desc_dma;
	dma_addr_t tx_desc_dma;
	struct sh_eth_rxdesc *rx_ring;
	struct sh_eth_txdesc *tx_ring;
	struct sk_buff **rx_skbuff;
	struct sk_buff **tx_skbuff;
	struct net_device_stats stats;
	struct timer_list timer;
	spinlock_t lock;
	u32 cur_rx, dirty_rx;	/* Producer/consumer ring indices */
	u32 cur_tx, dirty_tx;
	u32 rx_buf_sz;		/* Based on MTU+slack. */
	/* MII transceiver section. */
	u32 phy_id;					/* PHY ID */
	struct mii_bus *mii_bus;	/* MDIO bus control */
	struct phy_device *phydev;	/* PHY device control */
	enum phy_state link;
	int msg_enable;
	int speed;
	int duplex;
	u32 rx_int_var, tx_int_var;	/* interrupt control variables */
	char post_rx;		/* POST receive */
	char post_fw;		/* POST forward */
	struct net_device_stats tsu_stats;	/* TSU forward status */
};

static void swaps(char *src, int len)
{
#ifdef __LITTLE_ENDIAN__
	u32 *p = (u32 *)src;
	u32 *maxp;
	maxp = p + ((len + sizeof(u32) - 1) / sizeof(u32));

	for (; p < maxp; p++)
		*p = swab32(*p);
#endif
}