summaryrefslogtreecommitdiffstats
path: root/drivers/net/gt96100eth.h
blob: 2f4bfd4dacbee3dc86220718c4c4aa2d8f013a7e (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
/*
 * Copyright 2000 MontaVista Software Inc.
 * Author: MontaVista Software, Inc.
 *         	stevel@mvista.com or source@mvista.com
 *
 * ########################################################################
 *
 *  This program is free software; you can distribute it and/or modify it
 *  under the terms 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.,
 *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
 *
 * ########################################################################
 *
 * Ethernet driver definitions for the MIPS GT96100 Advanced
 * Communication Controller.
 * 
 */
#ifndef _GT96100ETH_H
#define _GT96100ETH_H

#include <linux/config.h>
#include <asm/galileo-boards/gt96100.h>

#define dbg(lvl, format, arg...) \
    if (lvl <= GT96100_DEBUG) \
        printk(KERN_DEBUG "%s: " format, dev->name , ## arg)
#define err(format, arg...) \
    printk(KERN_ERR "%s: " format, dev->name , ## arg)
#define info(format, arg...) \
    printk(KERN_INFO "%s: " format, dev->name , ## arg)
#define warn(format, arg...) \
    printk(KERN_WARNING "%s: " format, dev->name , ## arg)

/* Keep the ring sizes a power of two for efficiency. */
#define TX_RING_SIZE	16
#define RX_RING_SIZE	32
#define PKT_BUF_SZ	1536	/* Size of each temporary Rx buffer.*/

#define RX_HASH_TABLE_SIZE 16384
#define HASH_HOP_NUMBER 12

#define NUM_INTERFACES 2

#define GT96100ETH_TX_TIMEOUT HZ/4

#define GT96100_ETH0_BASE (MIPS_GT96100_BASE + GT96100_ETH_PORT_CONFIG)
#define GT96100_ETH1_BASE (GT96100_ETH0_BASE + GT96100_ETH_IO_SIZE)

#ifdef CONFIG_MIPS_EV96100
#define GT96100_ETHER0_IRQ 3
#define GT96100_ETHER1_IRQ 4
#else
#define GT96100_ETHER0_IRQ -1
#define GT96100_ETHER1_IRQ -1
#endif

#define REV_GT96100  1
#define REV_GT96100A_1 2
#define REV_GT96100A 3

#define GT96100ETH_READ(gp, offset) \
    GT96100_READ((gp->port_offset + offset))

#define GT96100ETH_WRITE(gp, offset, data) \
    GT96100_WRITE((gp->port_offset + offset), data)

#define GT96100ETH_SETBIT(gp, offset, bits) {\
    u32 val = GT96100ETH_READ(gp, offset); val |= (u32)(bits); \
    GT96100ETH_WRITE(gp, offset, val); }

#define GT96100ETH_CLRBIT(gp, offset, bits) {\
    u32 val = GT96100ETH_READ(gp, offset); val &= (u32)(~(bits)); \
    GT96100ETH_WRITE(gp, offset, val); }


/* Bit definitions of the SMI Reg */
enum {
	smirDataMask = 0xffff,
	smirPhyAdMask = 0x1f<<16,
	smirPhyAdBit = 16,
	smirRegAdMask = 0x1f<<21,
	smirRegAdBit = 21,
	smirOpCode = 1<<26,
	smirReadValid = 1<<27,
	smirBusy = 1<<28
};

/* Bit definitions of the Port Config Reg */
enum pcr_bits {
	pcrPM = 1,
	pcrRBM = 2,
	pcrPBF = 4,
	pcrEN = 1<<7,
	pcrLPBKMask = 0x3<<8,
	pcrLPBKBit = 8,
	pcrFC = 1<<10,
	pcrHS = 1<<12,
	pcrHM = 1<<13,
	pcrHDM = 1<<14,
	pcrHD = 1<<15,
	pcrISLMask = 0x7<<28,
	pcrISLBit = 28,
	pcrACCS = 1<<31
};

/* Bit definitions of the Port Config Extend Reg */
enum pcxr_bits {
	pcxrIGMP = 1,
	pcxrSPAN = 2,
	pcxrPAR = 4,
	pcxrPRIOtxMask = 0x7<<3,
	pcxrPRIOtxBit = 3,
	pcxrPRIOrxMask = 0x3<<6,
	pcxrPRIOrxBit = 6,
	pcxrPRIOrxOverride = 1<<8,
	pcxrDPLXen = 1<<9,
	pcxrFCTLen = 1<<10,
	pcxrFLP = 1<<11,
	pcxrFCTL = 1<<12,
	pcxrMFLMask = 0x3<<14,
	pcxrMFLBit = 14,
	pcxrMIBclrMode = 1<<16,
	pcxrSpeed = 1<<18,
	pcxrSpeeden = 1<<19,
	pcxrRMIIen = 1<<20,
	pcxrDSCPen = 1<<21
};

/* Bit definitions of the Port Command Reg */
enum pcmr_bits {
	pcmrFJ = 1<<15
};


/* Bit definitions of the Port Status Reg */
enum psr_bits {
	psrSpeed = 1,
	psrDuplex = 2,
	psrFctl = 4,
	psrLink = 8,
	psrPause = 1<<4,
	psrTxLow = 1<<5,
	psrTxHigh = 1<<6,
	psrTxInProg = 1<<7
};

/* Bit definitions of the SDMA Config Reg */
enum sdcr_bits {
	sdcrRCMask = 0xf<<2,
	sdcrRCBit = 2,
	sdcrBLMR = 1<<6,
	sdcrBLMT = 1<<7,
	sdcrPOVR = 1<<8,
	sdcrRIFB = 1<<9,
	sdcrBSZMask = 0x3<<12,
	sdcrBSZBit = 12
};

/* Bit definitions of the SDMA Command Reg */
enum sdcmr_bits {
	sdcmrERD = 1<<7,
	sdcmrAR = 1<<15,
	sdcmrSTDH = 1<<16,
	sdcmrSTDL = 1<<17,
	sdcmrTXDH = 1<<23,
	sdcmrTXDL = 1<<24,
	sdcmrAT = 1<<31
};

/* Bit definitions of the Interrupt Cause Reg */
enum icr_bits {
	icrRxBuffer = 1,
	icrTxBufferHigh = 1<<2,
	icrTxBufferLow = 1<<3,
	icrTxEndHigh = 1<<6,
	icrTxEndLow = 1<<7,
	icrRxError = 1<<8,
	icrTxErrorHigh = 1<<10,
	icrTxErrorLow = 1<<11,
	icrRxOVR = 1<<12,
	icrTxUdr = 1<<13,
	icrRxBufferQ0 = 1<<16,
	icrRxBufferQ1 = 1<<17,
	icrRxBufferQ2 = 1<<18,
	icrRxBufferQ3 = 1<<19,
	icrRxErrorQ0 = 1<<20,
	icrRxErrorQ1 = 1<<21,
	icrRxErrorQ2 = 1<<22,
	icrRxErrorQ3 = 1<<23,
	icrMIIPhySTC = 1<<28,
	icrSMIdone = 1<<29,
	icrEtherIntSum = 1<<31
};


/* The Rx and Tx descriptor lists. */
typedef struct {
#ifdef DESC_BE
	u16 byte_cnt;
	u16 reserved;
#else
	u16 reserved;
	u16 byte_cnt;
#endif
	u32 cmdstat;
	u32 next;
	u32 buff_ptr;
} gt96100_td_t __attribute__ ((packed));

typedef struct {
#ifdef DESC_BE
	u16 buff_sz;
	u16 byte_cnt;
#else
	u16 byte_cnt;
	u16 buff_sz;
#endif
	u32 cmdstat;
	u32 next;
	u32 buff_ptr;
} gt96100_rd_t __attribute__ ((packed));


/* Values for the Tx command-status descriptor entry. */
enum td_cmdstat {
	txOwn = 1<<31,
	txAutoMode = 1<<30,
	txEI = 1<<23,
	txGenCRC = 1<<22,
	txPad = 1<<18,
	txFirst = 1<<17,
	txLast = 1<<16,
	txErrorSummary = 1<<15,
	txReTxCntMask = 0x0f<<10,
	txReTxCntBit = 10,
	txCollision = 1<<9,
	txReTxLimit = 1<<8,
	txUnderrun = 1<<6,
	txLateCollision = 1<<5
};


/* Values for the Rx command-status descriptor entry. */
enum rd_cmdstat {
	rxOwn = 1<<31,
	rxAutoMode = 1<<30,
	rxEI = 1<<23,
	rxFirst = 1<<17,
	rxLast = 1<<16,
	rxErrorSummary = 1<<15,
	rxIGMP = 1<<14,
	rxHashExpired = 1<<13,
	rxMissedFrame = 1<<12,
	rxFrameType = 1<<11,
	rxShortFrame = 1<<8,
	rxMaxFrameLen = 1<<7,
	rxOverrun = 1<<6,
	rxCollision = 1<<4,
	rxCRCError = 1
};

/* Bit fields of a Hash Table Entry */
enum hash_table_entry {
	hteValid = 1,
	hteSkip = 2,
	hteRD = 4
};

// The MIB counters
typedef struct {
	u32 byteReceived;
	u32 byteSent;
	u32 framesReceived;
	u32 framesSent;
	u32 totalByteReceived;
	u32 totalFramesReceived;
	u32 broadcastFramesReceived;
	u32 multicastFramesReceived;
	u32 cRCError;
	u32 oversizeFrames;
	u32 fragments;
	u32 jabber;
	u32 collision;
	u32 lateCollision;
	u32 frames64;
	u32 frames65_127;
	u32 frames128_255;
	u32 frames256_511;
	u32 frames512_1023;
	u32 frames1024_MaxSize;
	u32 macRxError;
	u32 droppedFrames;
	u32 outMulticastFrames;
	u32 outBroadcastFrames;
	u32 undersizeFrames;
} mib_counters_t;


struct gt96100_private {
	gt96100_rd_t* rx_ring;
	gt96100_td_t* tx_ring;
	// The Rx and Tx rings must be 16-byte aligned
	dma_addr_t rx_ring_dma;
	dma_addr_t tx_ring_dma;
	char* hash_table;
	// The Hash Table must be 8-byte aligned
	dma_addr_t hash_table_dma;
	int hash_mode;
    
	// The Rx buffers must be 8-byte aligned
	char* rx_buff;
	dma_addr_t rx_buff_dma;
	// Tx buffers (tx_skbuff[i]->data) with less than 8 bytes
	// of payload must be 8-byte aligned
	struct sk_buff* tx_skbuff[TX_RING_SIZE];
	int rx_next_out; /* The next free ring entry to receive */
	int tx_next_in;	 /* The next free ring entry to send */
	int tx_next_out; /* The last ring entry the ISR processed */
	int tx_count;    /* current # of pkts waiting to be sent in Tx ring */
	int intr_work_done; /* number of Rx and Tx pkts processed in the isr */
	int tx_full;        /* Tx ring is full */
    
	mib_counters_t mib;
	struct net_device_stats stats;

	int io_size;
	int port_num;  // 0 or 1
	int chip_rev;
	u32 port_offset;
    
	int phy_addr; // PHY address
	u32 last_psr; // last value of the port status register

	int options;     /* User-settable misc. driver options. */
	int drv_flags;
	struct timer_list timer;
	spinlock_t lock; /* Serialise access to device */
};

#endif
OpenPOWER on IntegriCloud