aboutsummaryrefslogtreecommitdiff
path: root/drivers/isdn/hardware/mISDN/hfcsusb.h
blob: 369196adae035919b35120ecabec956940fa03d4 (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
/*
 * hfcsusb.h, HFC-S USB mISDN driver
 */

#ifndef __HFCSUSB_H__
#define __HFCSUSB_H__


#define DRIVER_NAME "HFC-S_USB"

#define DBG_HFC_CALL_TRACE	0x00010000
#define DBG_HFC_FIFO_VERBOSE	0x00020000
#define DBG_HFC_USB_VERBOSE	0x00100000
#define DBG_HFC_URB_INFO	0x00200000
#define DBG_HFC_URB_ERROR	0x00400000

#define DEFAULT_TRANSP_BURST_SZ 128

#define HFC_CTRL_TIMEOUT	20	/* 5ms timeout writing/reading regs */
#define CLKDEL_TE		0x0f	/* CLKDEL in TE mode */
#define CLKDEL_NT		0x6c	/* CLKDEL in NT mode */

/* hfcsusb Layer1 commands */
#define HFC_L1_ACTIVATE_TE		1
#define HFC_L1_ACTIVATE_NT		2
#define HFC_L1_DEACTIVATE_NT		3
#define HFC_L1_FORCE_DEACTIVATE_TE	4

/* cmd FLAGS in HFCUSB_STATES register */
#define HFCUSB_LOAD_STATE	0x10
#define HFCUSB_ACTIVATE		0x20
#define HFCUSB_DO_ACTION	0x40
#define HFCUSB_NT_G2_G3		0x80

/* timers */
#define NT_ACTIVATION_TIMER	0x01	/* enables NT mode activation Timer */
#define NT_T1_COUNT		10

#define MAX_BCH_SIZE 		2048	/* allowed B-channel packet size */

#define HFCUSB_RX_THRESHOLD 	64	/* threshold for fifo report bit rx */
#define HFCUSB_TX_THRESHOLD 	96	/* threshold for fifo report bit tx */

#define HFCUSB_CHIP_ID		0x16	/* Chip ID register index */
#define HFCUSB_CIRM		0x00	/* cirm register index */
#define HFCUSB_USB_SIZE		0x07	/* int length register */
#define HFCUSB_USB_SIZE_I	0x06	/* iso length register */
#define HFCUSB_F_CROSS		0x0b	/* bit order register */
#define HFCUSB_CLKDEL		0x37	/* bit delay register */
#define HFCUSB_CON_HDLC		0xfa	/* channel connect register */
#define HFCUSB_HDLC_PAR		0xfb
#define HFCUSB_SCTRL		0x31	/* S-bus control register (tx) */
#define HFCUSB_SCTRL_E		0x32	/* same for E and special funcs */
#define HFCUSB_SCTRL_R		0x33	/* S-bus control register (rx) */
#define HFCUSB_F_THRES		0x0c	/* threshold register */
#define HFCUSB_FIFO		0x0f	/* fifo select register */
#define HFCUSB_F_USAGE		0x1a	/* fifo usage register */
#define HFCUSB_MST_MODE0	0x14
#define HFCUSB_MST_MODE1	0x15
#define HFCUSB_P_DATA		0x1f
#define HFCUSB_INC_RES_F	0x0e
#define HFCUSB_B1_SSL		0x20
#define HFCUSB_B2_SSL		0x21
#define HFCUSB_B1_RSL		0x24
#define HFCUSB_B2_RSL		0x25
#define HFCUSB_STATES		0x30


#define HFCUSB_CHIPID		0x40	/* ID value of HFC-S USB */

/* fifo registers */
#define HFCUSB_NUM_FIFOS	8	/* maximum number of fifos */
#define HFCUSB_B1_TX		0	/* index for B1 transmit bulk/int */
#define HFCUSB_B1_RX		1	/* index for B1 receive bulk/int */
#define HFCUSB_B2_TX		2
#define HFCUSB_B2_RX		3
#define HFCUSB_D_TX		4
#define HFCUSB_D_RX		5
#define HFCUSB_PCM_TX		6
#define HFCUSB_PCM_RX		7


#define USB_INT		0
#define USB_BULK	1
#define USB_ISOC	2

#define ISOC_PACKETS_D	8
#define ISOC_PACKETS_B	8
#define ISO_BUFFER_SIZE	128

/* defines how much ISO packets are handled in one URB */
static int iso_packets[8] =
    { ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B,
	ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D
};


/* Fifo flow Control for TX ISO */
#define SINK_MAX	68
#define SINK_MIN	48
#define SINK_DMIN	12
#define SINK_DMAX	18
#define BITLINE_INF	(-96*8)

/* HFC-S USB register access by Control-URSs */
#define write_reg_atomic(a, b, c) \
	usb_control_msg((a)->dev, (a)->ctrl_out_pipe, 0, 0x40, (c), (b), \
		0, 0, HFC_CTRL_TIMEOUT)
#define read_reg_atomic(a, b, c) \
	usb_control_msg((a)->dev, (a)->ctrl_in_pipe, 1, 0xC0, 0, (b), (c), \
		1, HFC_CTRL_TIMEOUT)
#define HFC_CTRL_BUFSIZE 64

struct ctrl_buf {
	__u8 hfcs_reg;		/* register number */
	__u8 reg_val;		/* value to be written (or read) */
};

/*
 * URB error codes
 * Used to represent a list of values and their respective symbolic names
 */
struct hfcusb_symbolic_list {
	const int num;
	const char *name;
};

static struct hfcusb_symbolic_list urb_errlist[] = {
	{-ENOMEM, "No memory for allocation of internal structures"},
	{-ENOSPC, "The host controller's bandwidth is already consumed"},
	{-ENOENT, "URB was canceled by unlink_urb"},
	{-EXDEV, "ISO transfer only partially completed"},
	{-EAGAIN, "Too match scheduled for the future"},
	{-ENXIO, "URB already queued"},
	{-EFBIG, "Too much ISO frames requested"},
	{-ENOSR, "Buffer error (overrun)"},
	{-EPIPE, "Specified endpoint is stalled (device not responding)"},
	{-EOVERFLOW, "Babble (bad cable?)"},
	{-EPROTO, "Bit-stuff error (bad cable?)"},
	{-EILSEQ, "CRC/Timeout"},
	{-ETIMEDOUT, "NAK (device does not respond)"},
	{-ESHUTDOWN, "Device unplugged"},
	{-1, NULL}
};

static inline const char *
symbolic(struct hfcusb_symbolic_list list[], const int num)
{
	int i;
	for (i = 0; list[i].name != NULL; i++)
		if (list[i].num == num)
			return list[i].name;
	return "<unknown USB Error>";
}

/* USB descriptor need to contain one of the following EndPoint combination: */
#define CNF_4INT3ISO	1	/* 4 INT IN, 3 ISO OUT */
#define CNF_3INT3ISO	2	/* 3 INT IN, 3 ISO OUT */
#define CNF_4ISO3ISO	3	/* 4 ISO IN, 3 ISO OUT */
#define CNF_3ISO3ISO	4	/* 3 ISO IN, 3 ISO OUT */

#define EP_NUL 1	/* Endpoint at this position not allowed */
#define EP_NOP 2	/* all type of endpoints allowed at this position */
#define EP_ISO 3	/* Isochron endpoint mandatory at this position */
#define EP_BLK 4	/* Bulk endpoint mandatory at this position */
#define EP_INT 5	/* Interrupt endpoint mandatory at this position */

#define HFC_CHAN_B1	0
#define HFC_CHAN_B2	1
#define HFC_CHAN_D	2
#define HFC_CHAN_E	3


/*
 * List of all supported enpoints configiration sets, used to find the
 * best matching endpoint configuration within a devices' USB descriptor.
 * We need at least 3 RX endpoints, and 3 TX endpoints, either
 * INT-in and ISO-out, or ISO-in and ISO-out)
 * with 4 RX endpoints even E-Channel logging is possible
 */
static int
validconf[][19] = {
	/* INT in, ISO out config */
	{EP_NUL, EP_INT, EP_NUL, EP_INT, EP_NUL, EP_INT, EP_NOP, EP_INT,
	 EP_ISO, EP_NUL, EP_ISO, EP_NUL, EP_ISO, EP_NUL, EP_NUL, EP_NUL,
	 CNF_4INT3ISO, 2, 1},
	{EP_NUL, EP_INT, EP_NUL, EP_INT, EP_NUL, EP_INT, EP_NUL, EP_NUL,
	 EP_ISO, EP_NUL, EP_ISO, EP_NUL, EP_ISO, EP_NUL, EP_NUL, EP_NUL,
	 CNF_3INT3ISO, 2, 0},
	/* ISO in, ISO out config */
	{EP_NOP, EP_NOP, EP_NOP, EP_NOP, EP_NOP, EP_NOP, EP_NOP, EP_NOP,
	 EP_ISO, EP_ISO, EP_ISO, EP_ISO, EP_ISO, EP_ISO, EP_NOP, EP_ISO,
	 CNF_4ISO3ISO, 2, 1},
	{EP_NUL, EP_NUL, EP_NUL, EP_NUL, EP_NUL, EP_NUL, EP_NUL, EP_NUL,
	 EP_ISO, EP_ISO, EP_ISO, EP_ISO, EP_ISO, EP_ISO, EP_NUL, EP_NUL,
	 CNF_3ISO3ISO, 2, 0},
	{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} /* EOL element */
};

/* string description of chosen config */
static char *conf_str[] = {
	"4 Interrupt IN + 3 Isochron OUT",
	"3 Interrupt IN + 3 Isochron OUT",
	"4 Isochron IN + 3 Isochron OUT",
	"3 Isochron IN + 3 Isochron OUT"
};


#define LED_OFF		0	/* no LED support */
#define LED_SCHEME1	1	/* LED standard scheme */
#define LED_SCHEME2	2	/* not used yet... */

#define LED_POWER_ON	1
#define LED_POWER_OFF	2
#define LED_S0_ON	3
#define LED_S0_OFF	4
#define LED_B1_ON	5
#define LED_B1_OFF	6
#define LED_B1_DATA	7
#define LED_B2_ON	8
#define LED_B2_OFF	9
#define LED_B2_DATA	10

#define LED_NORMAL	0	/* LEDs are normal */
#define LED_INVERTED 	1	/* LEDs are inverted */

/* time in ms to perform a Flashing LED when B-Channel has traffic */
#define LED_TIME      250



struct hfcsusb;
struct usb_fifo;

/* structure defining input+output fifos (interrupt/bulk mode) */
struct iso_urb {
	struct urb *urb;
	__u8 buffer[ISO_BUFFER_SIZE];	/* buffer rx/tx USB URB data */
	struct usb_fifo *owner_fifo;	/* pointer to owner fifo */
	__u8 indx; /* Fifos's ISO double buffer 0 or 1 ? */
#ifdef ISO_FRAME_START_DEBUG
	int start_frames[ISO_FRAME_START_RING_COUNT];
	__u8 iso_frm_strt_pos; /* index in start_frame[] */
#endif
};

struct usb_fifo {
	int fifonum;		/* fifo index attached to this structure */
	int active;		/* fifo is currently active */
	struct hfcsusb *hw;	/* pointer to main structure */
	int pipe;		/* address of endpoint */
	__u8 usb_packet_maxlen;	/* maximum length for usb transfer */
	unsigned int max_size;	/* maximum size of receive/send packet */
	__u8 intervall;		/* interrupt interval */
	struct urb *urb;	/* transfer structure for usb routines */
	__u8 buffer[128];	/* buffer USB INT OUT URB data */
	int bit_line;		/* how much bits are in the fifo? */

	__u8 usb_transfer_mode; /* switched between ISO and INT */
	struct iso_urb	iso[2]; /* two urbs to have one always
					 one pending */

	struct dchannel *dch;	/* link to hfcsusb_t->dch */
	struct bchannel *bch;	/* link to hfcsusb_t->bch */
	struct dchannel *ech;	/* link to hfcsusb_t->ech, TODO: E-CHANNEL */
	int last_urblen;	/* remember length of last packet */
	__u8 stop_gracefull;	/* stops URB retransmission */
};

struct hfcsusb {
	struct list_head	list;
	struct dchannel		dch;
	struct bchannel		bch[2];
	struct dchannel		ech; /* TODO : wait for struct echannel ;) */

	struct usb_device	*dev;		/* our device */
	struct usb_interface	*intf;		/* used interface */
	int			if_used;	/* used interface number */
	int			alt_used;	/* used alternate config */
	int			cfg_used;	/* configuration index used */
	int			vend_idx;	/* index in hfcsusb_idtab */
	int			packet_size;
	int			iso_packet_size;
	struct usb_fifo		fifos[HFCUSB_NUM_FIFOS];

	/* control pipe background handling */
	struct ctrl_buf		ctrl_buff[HFC_CTRL_BUFSIZE];
	int			ctrl_in_idx, ctrl_out_idx, ctrl_cnt;
	struct urb		*ctrl_urb;
	struct usb_ctrlrequest	ctrl_write;
	struct usb_ctrlrequest	ctrl_read;
	int			ctrl_paksize;
	int			ctrl_in_pipe, ctrl_out_pipe;
	spinlock_t		ctrl_lock; /* lock for ctrl */
	spinlock_t              lock;

	__u8			threshold_mask;
	__u8			led_state;

	__u8			protocol;
	int			nt_timer;
	int			open;
	__u8			timers;
	__u8			initdone;
	char			name[MISDN_MAX_IDLEN];
};

/* private vendor specific data */
struct hfcsusb_vdata {
	__u8		led_scheme;  /* led display scheme */
	signed short	led_bits[8]; /* array of 8 possible LED bitmask */
	char		*vend_name;  /* device name */
};


#define HFC_MAX_TE_LAYER1_STATE 8
#define HFC_MAX_NT_LAYER1_STATE 4

static const char *HFC_TE_LAYER1_STATES[HFC_MAX_TE_LAYER1_STATE + 1] = {
	"TE F0 - Reset",
	"TE F1 - Reset",
	"TE F2 - Sensing",
	"TE F3 - Deactivated",
	"TE F4 - Awaiting signal",
	"TE F5 - Identifying input",
	"TE F6 - Synchronized",
	"TE F7 - Activated",
	"TE F8 - Lost framing",
};

static const char *HFC_NT_LAYER1_STATES[HFC_MAX_NT_LAYER1_STATE + 1] = {
	"NT G0 - Reset",
	"NT G1 - Deactive",
	"NT G2 - Pending activation",
	"NT G3 - Active",
	"NT G4 - Pending deactivation",
};

/* supported devices */
static struct usb_device_id hfcsusb_idtab[] = {
	{
	 USB_DEVICE(0x0959, 0x2bd0),
	 .driver_info = (unsigned long) &((struct hfcsusb_vdata)
			  {LED_OFF, {4, 0, 2, 1},
			   "ISDN USB TA (Cologne Chip HFC-S USB based)"}),
	},
	{
	 USB_DEVICE(0x0675, 0x1688),
	 .driver_info = (unsigned long) &((struct hfcsusb_vdata)
			  {LED_SCHEME1, {1, 2, 0, 0},
			   "DrayTek miniVigor 128 USB ISDN TA"}),
	},
	{
	 USB_DEVICE(0x07b0, 0x0007),
	 .driver_info = (unsigned long) &((struct hfcsusb_vdata)
			  {LED_SCHEME1, {0x80, -64, -32, -16},
			   "Billion tiny USB ISDN TA 128"}),
	},
	{
	 USB_DEVICE(0x0742, 0x2008),
	 .driver_info = (unsigned long) &((struct hfcsusb_vdata)
			  {LED_SCHEME1, {4, 0, 2, 1},
			   "Stollmann USB TA"}),
	},
	{
	 USB_DEVICE(0x0742, 0x2009),
	 .driver_info = (unsigned long) &((struct hfcsusb_vdata)
			  {LED_SCHEME1, {4, 0, 2, 1},
			   "Aceex USB ISDN TA"}),
	},
	{
	 USB_DEVICE(0x0742, 0x200A),
	 .driver_info = (unsigned long) &((struct hfcsusb_vdata)
			  {LED_SCHEME1, {4, 0, 2, 1},
			   "OEM USB ISDN TA"}),
	},
	{
	 USB_DEVICE(0x08e3, 0x0301),
	 .driver_info = (unsigned long) &((struct hfcsusb_vdata)
			  {LED_SCHEME1, {2, 0, 1, 4},
			   "Olitec USB RNIS"}),
	},
	{
	 USB_DEVICE(0x07fa, 0x0846),
	 .driver_info = (unsigned long) &((struct hfcsusb_vdata)
			  {LED_SCHEME1, {0x80, -64, -32, -16},
			   "Bewan Modem RNIS USB"}),
	},
	{
	 USB_DEVICE(0x07fa, 0x0847),
	 .driver_info = (unsigned long) &((struct hfcsusb_vdata)
			  {LED_SCHEME1, {0x80, -64, -32, -16},
			   "Djinn Numeris USB"}),
	},
	{
	 USB_DEVICE(0x07b0, 0x0006),
	 .driver_info = (unsigned long) &((struct hfcsusb_vdata)
			  {LED_SCHEME1, {0x80, -64, -32, -16},
			   "Twister ISDN TA"}),
	},
	{
	 USB_DEVICE(0x071d, 0x1005),
	 .driver_info = (unsigned long) &((struct hfcsusb_vdata)
			  {LED_SCHEME1, {0x02, 0, 0x01, 0x04},
			   "Eicon DIVA USB 4.0"}),
	},
	{
	 USB_DEVICE(0x0586, 0x0102),
	 .driver_info = (unsigned long) &((struct hfcsusb_vdata)
			  {LED_SCHEME1, {0x88, -64, -32, -16},
			   "ZyXEL OMNI.NET USB II"}),
	},
	{ }
};

MODULE_DEVICE_TABLE(usb, hfcsusb_idtab);

#endif	/* __HFCSUSB_H__ */