summaryrefslogtreecommitdiffstats
path: root/drivers/net/wan/pc300.h
blob: 2e4f84f6cad486c8ec223bc73c8852f3b0ae41b4 (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
/*
 * pc300.h	Cyclades-PC300(tm) Kernel API Definitions.
 *
 * Author:	Ivan Passos <ivan@cyclades.com>
 *
 * Copyright:	(c) 1999-2002 Cyclades Corp.
 *
 *	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 of the License, or (at your option) any later version.
 *
 * $Log: pc300.h,v $
 * Revision 3.12  2002/03/07 14:17:09  henrique
 * License data fixed
 *
 * Revision 3.11  2002/01/28 21:09:39  daniela
 * Included ';' after pc300hw.bus.
 *
 * Revision 3.10  2002/01/17 17:58:52  ivan
 * Support for PC300-TE/M (PMC).
 *
 * Revision 3.9  2001/09/28 13:30:53  daniela
 * Renamed dma_start routine to rx_dma_start.
 *
 * Revision 3.8  2001/09/24 13:03:45  daniela
 * Fixed BOF interrupt treatment. Created dma_start routine.
 *
 * Revision 3.7  2001/08/10 17:19:58  daniela
 * Fixed IOCTLs defines.
 *
 * Revision 3.6  2001/07/18 19:24:42  daniela
 * Included kernel version.
 *
 * Revision 3.5  2001/07/05 18:38:08  daniela
 * DMA transmission bug fix.
 *
 * Revision 3.4  2001/06/26 17:10:40  daniela
 * New configuration parameters (line code, CRC calculation and clock).
 *
 * Revision 3.3  2001/06/22 13:13:02  regina
 * MLPPP implementation
 *
 * Revision 3.2  2001/06/18 17:56:09  daniela
 * Increased DEF_MTU and TX_QUEUE_LEN.
 *
 * Revision 3.1  2001/06/15 12:41:10  regina
 * upping major version number
 *
 * Revision 1.1.1.1  2001/06/13 20:25:06  daniela
 * PC300 initial CVS version (3.4.0-pre1)
 *
 * Revision 2.3 2001/03/05 daniela
 * Created struct pc300conf, to provide the hardware information to pc300util.
 * Inclusion of 'alloc_ramsize' field on structure 'pc300hw'.
 * 
 * Revision 2.2 2000/12/22 daniela
 * Structures and defines to support pc300util: statistics, status, 
 * loopback tests, trace.
 * 
 * Revision 2.1 2000/09/28 ivan
 * Inclusion of 'iophys' and 'iosize' fields on structure 'pc300hw', to 
 * allow release of I/O region at module unload.
 * Changed location of include files.
 *
 * Revision 2.0 2000/03/27 ivan
 * Added support for the PC300/TE cards.
 *
 * Revision 1.1 2000/01/31 ivan
 * Replaced 'pc300[drv|sca].h' former PC300 driver include files.
 *
 * Revision 1.0 1999/12/16 ivan
 * First official release.
 * Inclusion of 'nchan' field on structure 'pc300hw', to allow variable 
 * number of ports per card.
 * Inclusion of 'if_ptr' field on structure 'pc300dev'.
 *
 * Revision 0.6 1999/11/17 ivan
 * Changed X.25-specific function names to comply with adopted convention.
 *
 * Revision 0.5 1999/11/16 Daniela Squassoni
 * X.25 support.
 *
 * Revision 0.4 1999/11/15 ivan
 * Inclusion of 'clock' field on structure 'pc300hw'.
 *
 * Revision 0.3 1999/11/10 ivan
 * IOCTL name changing.
 * Inclusion of driver function prototypes.
 *
 * Revision 0.2 1999/11/03 ivan
 * Inclusion of 'tx_skb' and union 'ifu' on structure 'pc300dev'.
 *
 * Revision 0.1 1999/01/15 ivan
 * Initial version.
 *
 */

#ifndef	_PC300_H
#define	_PC300_H

#include <linux/hdlc.h>
#include "hd64572.h"
#include "pc300-falc-lh.h"

#define PC300_PROTO_MLPPP 1

#define	PC300_MAXCHAN	2	/* Number of channels per card */

#define	PC300_RAMSIZE	0x40000 /* RAM window size (256Kb) */
#define	PC300_FALCSIZE	0x400	/* FALC window size (1Kb) */

#define PC300_OSC_CLOCK	24576000
#define PC300_PCI_CLOCK	33000000

#define BD_DEF_LEN	0x0800	/* DMA buffer length (2KB) */
#define DMA_TX_MEMSZ	0x8000	/* Total DMA Tx memory size (32KB/ch) */
#define DMA_RX_MEMSZ	0x10000	/* Total DMA Rx memory size (64KB/ch) */

#define N_DMA_TX_BUF	(DMA_TX_MEMSZ / BD_DEF_LEN)	/* DMA Tx buffers */
#define N_DMA_RX_BUF	(DMA_RX_MEMSZ / BD_DEF_LEN)	/* DMA Rx buffers */

/* DMA Buffer Offsets */
#define DMA_TX_BASE	((N_DMA_TX_BUF + N_DMA_RX_BUF) *	\
			 PC300_MAXCHAN * sizeof(pcsca_bd_t))
#define DMA_RX_BASE	(DMA_TX_BASE + PC300_MAXCHAN*DMA_TX_MEMSZ)

/* DMA Descriptor Offsets */
#define DMA_TX_BD_BASE	0x0000
#define DMA_RX_BD_BASE	(DMA_TX_BD_BASE + ((PC300_MAXCHAN*DMA_TX_MEMSZ / \
				BD_DEF_LEN) * sizeof(pcsca_bd_t)))

/* DMA Descriptor Macros */
#define TX_BD_ADDR(chan, n)	(DMA_TX_BD_BASE + \
				 ((N_DMA_TX_BUF*chan) + n) * sizeof(pcsca_bd_t))
#define RX_BD_ADDR(chan, n)	(DMA_RX_BD_BASE + \
				 ((N_DMA_RX_BUF*chan) + n) * sizeof(pcsca_bd_t))

/* Macro to access the FALC registers (TE only) */
#define F_REG(reg, chan)	(0x200*(chan) + ((reg)<<2))

/***************************************
 * Memory access functions/macros      *
 * (required to support Alpha systems) *
 ***************************************/
#define cpc_writeb(port,val)	{writeb((u8)(val),(port)); mb();}
#define cpc_writew(port,val)	{writew((ushort)(val),(port)); mb();}
#define cpc_writel(port,val)	{writel((u32)(val),(port)); mb();}

#define cpc_readb(port)		readb(port)
#define cpc_readw(port)		readw(port)
#define cpc_readl(port)		readl(port)

/****** Data Structures *****************************************************/

/*
 *      RUNTIME_9050 - PLX PCI9050-1 local configuration and shared runtime
 *      registers. This structure can be used to access the 9050 registers
 *      (memory mapped).
 */
struct RUNTIME_9050 {
	u32 loc_addr_range[4];	/* 00-0Ch : Local Address Ranges */
	u32 loc_rom_range;	/* 10h : Local ROM Range */
	u32 loc_addr_base[4];	/* 14-20h : Local Address Base Addrs */
	u32 loc_rom_base;	/* 24h : Local ROM Base */
	u32 loc_bus_descr[4];	/* 28-34h : Local Bus Descriptors */
	u32 rom_bus_descr;	/* 38h : ROM Bus Descriptor */
	u32 cs_base[4];		/* 3C-48h : Chip Select Base Addrs */
	u32 intr_ctrl_stat;	/* 4Ch : Interrupt Control/Status */
	u32 init_ctrl;		/* 50h : EEPROM ctrl, Init Ctrl, etc */
};

#define PLX_9050_LINT1_ENABLE	0x01
#define PLX_9050_LINT1_POL	0x02
#define PLX_9050_LINT1_STATUS	0x04
#define PLX_9050_LINT2_ENABLE	0x08
#define PLX_9050_LINT2_POL	0x10
#define PLX_9050_LINT2_STATUS	0x20
#define PLX_9050_INTR_ENABLE	0x40
#define PLX_9050_SW_INTR	0x80

/* Masks to access the init_ctrl PLX register */
#define	PC300_CLKSEL_MASK		(0x00000004UL)
#define	PC300_CHMEDIA_MASK(chan)	(0x00000020UL<<(chan*3))
#define	PC300_CTYPE_MASK		(0x00000800UL)

/* CPLD Registers (base addr = falcbase, TE only) */
/* CPLD v. 0 */
#define CPLD_REG1	0x140	/* Chip resets, DCD/CTS status */
#define CPLD_REG2	0x144	/* Clock enable , LED control */
/* CPLD v. 2 or higher */
#define CPLD_V2_REG1	0x100	/* Chip resets, DCD/CTS status */
#define CPLD_V2_REG2	0x104	/* Clock enable , LED control */
#define CPLD_ID_REG	0x108	/* CPLD version */

/* CPLD Register bit description: for the FALC bits, they should always be 
   set based on the channel (use (bit<<(2*ch)) to access the correct bit for 
   that channel) */
#define CPLD_REG1_FALC_RESET	0x01
#define CPLD_REG1_SCA_RESET	0x02
#define CPLD_REG1_GLOBAL_CLK	0x08
#define CPLD_REG1_FALC_DCD	0x10
#define CPLD_REG1_FALC_CTS	0x20

#define CPLD_REG2_FALC_TX_CLK	0x01
#define CPLD_REG2_FALC_RX_CLK	0x02
#define CPLD_REG2_FALC_LED1	0x10
#define CPLD_REG2_FALC_LED2	0x20

/* Structure with FALC-related fields (TE only) */
#define PC300_FALC_MAXLOOP	0x0000ffff	/* for falc_issue_cmd() */

typedef struct falc {
	u8 sync;	/* If true FALC is synchronized */
	u8 active;	/* if TRUE then already active */
	u8 loop_active;	/* if TRUE a line loopback UP was received */
	u8 loop_gen;	/* if TRUE a line loopback UP was issued */

	u8 num_channels;
	u8 offset;	/* 1 for T1, 0 for E1 */
	u8 full_bandwidth;

	u8 xmb_cause;
	u8 multiframe_mode;

	/* Statistics */
	u16 pden;	/* Pulse Density violation count */
	u16 los;	/* Loss of Signal count */
	u16 losr;	/* Loss of Signal recovery count */
	u16 lfa;	/* Loss of frame alignment count */
	u16 farec;	/* Frame Alignment Recovery count */
	u16 lmfa;	/* Loss of multiframe alignment count */
	u16 ais;	/* Remote Alarm indication Signal count */
	u16 sec;	/* One-second timer */
	u16 es;		/* Errored second */
	u16 rai;	/* remote alarm received */
	u16 bec;
	u16 fec;
	u16 cvc;
	u16 cec;
	u16 ebc;

	/* Status */
	u8 red_alarm;
	u8 blue_alarm;
	u8 loss_fa;
	u8 yellow_alarm;
	u8 loss_mfa;
	u8 prbs;
} falc_t;

typedef struct falc_status {
	u8 sync;	/* If true FALC is synchronized */
	u8 red_alarm;
	u8 blue_alarm;
	u8 loss_fa;
	u8 yellow_alarm;
	u8 loss_mfa;
	u8 prbs;
} falc_status_t;

typedef struct rsv_x21_status {
	u8 dcd;
	u8 dsr;
	u8 cts;
	u8 rts;
	u8 dtr;
} rsv_x21_status_t;

typedef struct pc300stats {
	int hw_type;
	u32 line_on;
	u32 line_off;
	struct net_device_stats gen_stats;
	falc_t te_stats;
} pc300stats_t;

typedef struct pc300status {
	int hw_type;
	rsv_x21_status_t gen_status;
	falc_status_t te_status;
} pc300status_t;

typedef struct pc300loopback {
	char loop_type;
	char loop_on;
} pc300loopback_t;

typedef struct pc300patterntst {
	char patrntst_on;       /* 0 - off; 1 - on; 2 - read num_errors */
	u16 num_errors;
} pc300patterntst_t;

typedef struct pc300dev {
	struct pc300ch *chan;
	u8 trace_on;
	u32 line_on;		/* DCD(X.21, RSV) / sync(TE) change counters */
	u32 line_off;
	char name[16];
	struct net_device *dev;
#ifdef CONFIG_PC300_MLPPP
	void *cpc_tty;	/* information to PC300 TTY driver */
#endif
}pc300dev_t;

typedef struct pc300hw {
	int type;		/* RSV, X21, etc. */
	int bus;		/* Bus (PCI, PMC, etc.) */
	int nchan;		/* number of channels */
	int irq;		/* interrupt request level */
	u32 clock;		/* Board clock */
	u8 cpld_id;		/* CPLD ID (TE only) */
	u16 cpld_reg1;		/* CPLD reg 1 (TE only) */
	u16 cpld_reg2;		/* CPLD reg 2 (TE only) */
	u16 gpioc_reg;		/* PLX GPIOC reg */
	u16 intctl_reg;		/* PLX Int Ctrl/Status reg */
	u32 iophys;		/* PLX registers I/O base */
	u32 iosize;		/* PLX registers I/O size */
	u32 plxphys;		/* PLX registers MMIO base (physical) */
	void __iomem * plxbase;	/* PLX registers MMIO base (virtual) */
	u32 plxsize;		/* PLX registers MMIO size */
	u32 scaphys;		/* SCA registers MMIO base (physical) */
	void __iomem * scabase;	/* SCA registers MMIO base (virtual) */
	u32 scasize;		/* SCA registers MMIO size */
	u32 ramphys;		/* On-board RAM MMIO base (physical) */
	void __iomem * rambase;	/* On-board RAM MMIO base (virtual) */
	u32 alloc_ramsize;	/* RAM MMIO size allocated by the PCI bridge */
	u32 ramsize;		/* On-board RAM MMIO size */
	u32 falcphys;		/* FALC registers MMIO base (physical) */
	void __iomem * falcbase;/* FALC registers MMIO base (virtual) */
	u32 falcsize;		/* FALC registers MMIO size */
} pc300hw_t;

typedef struct pc300chconf {
	sync_serial_settings	phys_settings;	/* Clock type/rate (in bps),
						   loopback mode */
	raw_hdlc_proto		proto_settings;	/* Encoding, parity (CRC) */
	u32 media;		/* HW media (RS232, V.35, etc.) */
	u32 proto;		/* Protocol (PPP, X.25, etc.) */

	/* TE-specific parameters */
	u8 lcode;		/* Line Code (AMI, B8ZS, etc.) */
	u8 fr_mode;		/* Frame Mode (ESF, D4, etc.) */
	u8 lbo;			/* Line Build Out */
	u8 rx_sens;		/* Rx Sensitivity (long- or short-haul) */
	u32 tslot_bitmap;	/* bit[i]=1  =>  timeslot _i_ is active */
} pc300chconf_t;

typedef struct pc300ch {
	struct pc300 *card;
	int channel;
	pc300dev_t d;
	pc300chconf_t conf;
	u8 tx_first_bd;	/* First TX DMA block descr. w/ data */
	u8 tx_next_bd;	/* Next free TX DMA block descriptor */
	u8 rx_first_bd;	/* First free RX DMA block descriptor */
	u8 rx_last_bd;	/* Last free RX DMA block descriptor */
	u8 nfree_tx_bd;	/* Number of free TX DMA block descriptors */
	falc_t falc;	/* FALC structure (TE only) */
} pc300ch_t;

typedef struct pc300 {
	pc300hw_t hw;			/* hardware config. */
	pc300ch_t chan[PC300_MAXCHAN];
	spinlock_t card_lock;
} pc300_t;

typedef struct pc300conf {
	pc300hw_t hw;
	pc300chconf_t conf;
} pc300conf_t;

/* DEV ioctl() commands */
#define	N_SPPP_IOCTLS	2

enum pc300_ioctl_cmds {
	SIOCCPCRESERVED = (SIOCDEVPRIVATE + N_SPPP_IOCTLS),
	SIOCGPC300CONF,
	SIOCSPC300CONF,
	SIOCGPC300STATUS,
	SIOCGPC300FALCSTATUS,
	SIOCGPC300UTILSTATS,
	SIOCGPC300UTILSTATUS,
	SIOCSPC300TRACE,
	SIOCSPC300LOOPBACK,
	SIOCSPC300PATTERNTEST,
};

/* Loopback types - PC300/TE boards */
enum pc300_loopback_cmds {
	PC300LOCLOOP = 1,
	PC300REMLOOP,
	PC300PAYLOADLOOP,
	PC300GENLOOPUP,
	PC300GENLOOPDOWN,
};

/* Control Constant Definitions */
#define	PC300_RSV	0x01
#define	PC300_X21	0x02
#define	PC300_TE	0x03

#define	PC300_PCI	0x00
#define	PC300_PMC	0x01

#define PC300_LC_AMI	0x01
#define PC300_LC_B8ZS	0x02
#define PC300_LC_NRZ	0x03
#define PC300_LC_HDB3	0x04

/* Framing (T1) */
#define PC300_FR_ESF		0x01
#define PC300_FR_D4		0x02
#define PC300_FR_ESF_JAPAN	0x03

/* Framing (E1) */
#define PC300_FR_MF_CRC4	0x04
#define PC300_FR_MF_NON_CRC4	0x05
#define PC300_FR_UNFRAMED	0x06

#define PC300_LBO_0_DB		0x00
#define PC300_LBO_7_5_DB	0x01
#define PC300_LBO_15_DB		0x02
#define PC300_LBO_22_5_DB	0x03

#define PC300_RX_SENS_SH	0x01
#define PC300_RX_SENS_LH	0x02

#define PC300_TX_TIMEOUT	(2*HZ)
#define PC300_TX_QUEUE_LEN	100
#define	PC300_DEF_MTU		1600

/* Function Prototypes */
int cpc_open(struct net_device *dev);

#endif	/* _PC300_H */