aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/parport/parport_serial.c
blob: 6715a17b5d0fee4c526f0b67a0f5ffffcda88354 (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
481
482
483
484
485
/*
 * Support for common PCI multi-I/O cards (which is most of them)
 *
 * Copyright (C) 2001  Tim Waugh <twaugh@redhat.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 of the License, or (at your option) any later version.
 *
 *
 * Multi-function PCI cards are supposed to present separate logical
 * devices on the bus.  A common thing to do seems to be to just use
 * one logical device with lots of base address registers for both
 * parallel ports and serial ports.  This driver is for dealing with
 * that.
 *
 */

#include <linux/types.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/parport.h>
#include <linux/parport_pc.h>
#include <linux/serial.h>
#include <linux/serialP.h>
#include <linux/list.h>
#include <linux/8250_pci.h>

#include <asm/serial.h>

enum parport_pc_pci_cards {
	titan_110l = 0,
	titan_210l,
	netmos_9xx5_combo,
	avlab_1s1p,
	avlab_1s1p_650,
	avlab_1s1p_850,
	avlab_1s2p,
	avlab_1s2p_650,
	avlab_1s2p_850,
	avlab_2s1p,
	avlab_2s1p_650,
	avlab_2s1p_850,
	siig_1s1p_10x,
	siig_2s1p_10x,
	siig_2p1s_20x,
	siig_1s1p_20x,
	siig_2s1p_20x,
};

/* each element directly indexed from enum list, above */
struct parport_pc_pci {
	int numports;
	struct { /* BAR (base address registers) numbers in the config
                    space header */
		int lo;
		int hi; /* -1 if not there, >6 for offset-method (max
                           BAR is 6) */
	} addr[4];

	/* If set, this is called immediately after pci_enable_device.
	 * If it returns non-zero, no probing will take place and the
	 * ports will not be used. */
	int (*preinit_hook) (struct pci_dev *pdev, struct parport_pc_pci *card,
				int autoirq, int autodma);

	/* If set, this is called after probing for ports.  If 'failed'
	 * is non-zero we couldn't use any of the ports. */
	void (*postinit_hook) (struct pci_dev *pdev,
				struct parport_pc_pci *card, int failed);
};

static int __devinit netmos_parallel_init(struct pci_dev *dev, struct parport_pc_pci *card, int autoirq, int autodma)
{
	/*
	 * Netmos uses the subdevice ID to indicate the number of parallel
	 * and serial ports.  The form is 0x00PS, where <P> is the number of
	 * parallel ports and <S> is the number of serial ports.
	 */
	card->numports = (dev->subsystem_device & 0xf0) >> 4;
	return 0;
}

static struct parport_pc_pci cards[] __devinitdata = {
	/* titan_110l */		{ 1, { { 3, -1 }, } },
	/* titan_210l */		{ 1, { { 3, -1 }, } },
	/* netmos_9xx5_combo */		{ 1, { { 2, -1 }, }, netmos_parallel_init },
	/* avlab_1s1p     */		{ 1, { { 1, 2}, } },
	/* avlab_1s1p_650 */		{ 1, { { 1, 2}, } },
	/* avlab_1s1p_850 */		{ 1, { { 1, 2}, } },
	/* avlab_1s2p     */		{ 2, { { 1, 2}, { 3, 4 },} },
	/* avlab_1s2p_650 */		{ 2, { { 1, 2}, { 3, 4 },} },
	/* avlab_1s2p_850 */		{ 2, { { 1, 2}, { 3, 4 },} },
	/* avlab_2s1p     */		{ 1, { { 2, 3}, } },
	/* avlab_2s1p_650 */		{ 1, { { 2, 3}, } },
	/* avlab_2s1p_850 */		{ 1, { { 2, 3}, } },
	/* siig_1s1p_10x */		{ 1, { { 3, 4 }, } },
	/* siig_2s1p_10x */		{ 1, { { 4, 5 }, } },
	/* siig_2p1s_20x */		{ 2, { { 1, 2 }, { 3, 4 }, } },
	/* siig_1s1p_20x */		{ 1, { { 1, 2 }, } },
	/* siig_2s1p_20x */		{ 1, { { 2, 3 }, } },
};

static struct pci_device_id parport_serial_pci_tbl[] = {
	/* PCI cards */
	{ PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_110L,
	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, titan_110l },
	{ PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_210L,
	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, titan_210l },
	{ PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9735,
	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
	{ PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9745,
	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
	{ PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9835,
	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
	{ PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9835,
	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
	{ PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9845,
	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
	{ PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9855,
	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
	/* PCI_VENDOR_ID_AVLAB/Intek21 has another bunch of cards ...*/
	{ 0x14db, 0x2110, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s1p},
	{ 0x14db, 0x2111, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s1p_650},
	{ 0x14db, 0x2112, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s1p_850},
	{ 0x14db, 0x2140, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s2p},
	{ 0x14db, 0x2141, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s2p_650},
	{ 0x14db, 0x2142, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s2p_850},
	{ 0x14db, 0x2160, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_2s1p},
	{ 0x14db, 0x2161, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_2s1p_650},
	{ 0x14db, 0x2162, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_2s1p_850},
	{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_10x_550,
	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_10x },
	{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_10x_650,
	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_10x },
	{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_10x_850,
	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_10x },
	{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_10x_550,
	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_10x },
	{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_10x_650,
	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_10x },
	{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_10x_850,
	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_10x },
	{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P1S_20x_550,
	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2p1s_20x },
	{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P1S_20x_650,
	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2p1s_20x },
	{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P1S_20x_850,
	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2p1s_20x },
	{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_20x_550,
	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_20x },
	{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_20x_650,
	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_20x },
	{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_20x_850,
	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_20x },
	{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_20x_550,
	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_20x },
	{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_20x_650,
	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_20x },
	{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_20x_850,
	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_20x },

	{ 0, } /* terminate list */
};
MODULE_DEVICE_TABLE(pci,parport_serial_pci_tbl);

struct pci_board_no_ids {
	int flags;
	int num_ports;
	int base_baud;
	int uart_offset;
	int reg_shift;
	int (*init_fn)(struct pci_dev *dev, struct pci_board_no_ids *board,
			int enable);
	int first_uart_offset;
};

static int __devinit siig10x_init_fn(struct pci_dev *dev, struct pci_board_no_ids *board, int enable)
{
	return pci_siig10x_fn(dev, enable);
}

static int __devinit siig20x_init_fn(struct pci_dev *dev, struct pci_board_no_ids *board, int enable)
{
	return pci_siig20x_fn(dev, enable);
}

static int __devinit netmos_serial_init(struct pci_dev *dev, struct pci_board_no_ids *board, int enable)
{
	board->num_ports = dev->subsystem_device & 0xf;
	return 0;
}

static struct pci_board_no_ids pci_boards[] __devinitdata = {
	/*
	 * PCI Flags, Number of Ports, Base (Maximum) Baud Rate,
	 * Offset to get to next UART's registers,
	 * Register shift to use for memory-mapped I/O,
	 * Initialization function, first UART offset
	 */

// Cards not tested are marked n/t
// If you have one of these cards and it works for you, please tell me..

/* titan_110l */	{ SPCI_FL_BASE1 | SPCI_FL_BASE_TABLE, 1, 921600 },
/* titan_210l */	{ SPCI_FL_BASE1 | SPCI_FL_BASE_TABLE, 2, 921600 },
/* netmos_9xx5_combo */	{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200, 0, 0, netmos_serial_init },
/* avlab_1s1p (n/t) */	{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
/* avlab_1s1p_650 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
/* avlab_1s1p_850 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
/* avlab_1s2p (n/t) */	{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
/* avlab_1s2p_650 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
/* avlab_1s2p_850 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
/* avlab_2s1p (n/t) */	{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 2, 115200 },
/* avlab_2s1p_650 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 2, 115200 },
/* avlab_2s1p_850 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 2, 115200 },
/* siig_1s1p_10x */	{ SPCI_FL_BASE2, 1, 460800, 0, 0, siig10x_init_fn },
/* siig_2s1p_10x */	{ SPCI_FL_BASE2, 1, 921600, 0, 0, siig10x_init_fn },
/* siig_2p1s_20x */	{ SPCI_FL_BASE0, 1, 921600, 0, 0, siig20x_init_fn },
/* siig_1s1p_20x */	{ SPCI_FL_BASE0, 1, 921600, 0, 0, siig20x_init_fn },
/* siig_2s1p_20x */	{ SPCI_FL_BASE0, 1, 921600, 0, 0, siig20x_init_fn },
};

struct parport_serial_private {
	int num_ser;
	int line[20];
	struct pci_board_no_ids ser;
	int num_par;
	struct parport *port[PARPORT_MAX];
	struct parport_pc_pci par;
};

static int __devinit get_pci_port (struct pci_dev *dev,
				   struct pci_board_no_ids *board,
				   struct serial_struct *req,
				   int idx)
{
	unsigned long port;
	int base_idx;
	int max_port;
	int offset;

	base_idx = SPCI_FL_GET_BASE(board->flags);
	if (board->flags & SPCI_FL_BASE_TABLE)
		base_idx += idx;

	if (board->flags & SPCI_FL_REGION_SZ_CAP) {
		max_port = pci_resource_len(dev, base_idx) / 8;
		if (idx >= max_port)
			return 1;
	}
			
	offset = board->first_uart_offset;

	/* Timedia/SUNIX uses a mixture of BARs and offsets */
	/* Ugh, this is ugly as all hell --- TYT */
	if(dev->vendor == PCI_VENDOR_ID_TIMEDIA )  /* 0x1409 */
		switch(idx) {
			case 0: base_idx=0;
				break;
			case 1: base_idx=0; offset=8;
				break;
			case 2: base_idx=1; 
				break;
			case 3: base_idx=1; offset=8;
				break;
			case 4: /* BAR 2*/
			case 5: /* BAR 3 */
			case 6: /* BAR 4*/
			case 7: base_idx=idx-2; /* BAR 5*/
		}
  
	port =  pci_resource_start(dev, base_idx) + offset;

	if ((board->flags & SPCI_FL_BASE_TABLE) == 0)
		port += idx * (board->uart_offset ? board->uart_offset : 8);

	if (pci_resource_flags (dev, base_idx) & IORESOURCE_IO) {
		int high_bits_offset = ((sizeof(long)-sizeof(int))*8);
		req->port = port;
		if (high_bits_offset)
			req->port_high = port >> high_bits_offset;
		else
			req->port_high = 0;
		return 0;
	}
	req->io_type = SERIAL_IO_MEM;
	req->iomem_base = ioremap(port, board->uart_offset);
	req->iomem_reg_shift = board->reg_shift;
	req->port = 0;
	return req->iomem_base ? 0 : 1;
}

/* Register the serial port(s) of a PCI card. */
static int __devinit serial_register (struct pci_dev *dev,
				      const struct pci_device_id *id)
{
	struct pci_board_no_ids *board;
	struct parport_serial_private *priv = pci_get_drvdata (dev);
	struct serial_struct serial_req;
	int base_baud;
	int k;
	int success = 0;

	priv->ser = pci_boards[id->driver_data];
	board = &priv->ser;
	if (board->init_fn && ((board->init_fn) (dev, board, 1) != 0))
		return 1;

	base_baud = board->base_baud;
	if (!base_baud)
		base_baud = BASE_BAUD;
	memset (&serial_req, 0, sizeof (serial_req));

	for (k = 0; k < board->num_ports; k++) {
		int line;

		if (priv->num_ser == ARRAY_SIZE (priv->line)) {
			printk (KERN_WARNING
				"parport_serial: %s: only %u serial lines "
				"supported (%d reported)\n", pci_name (dev),
				ARRAY_SIZE (priv->line), board->num_ports);
			break;
		}

		serial_req.irq = dev->irq;
		if (get_pci_port (dev, board, &serial_req, k))
			break;
		serial_req.flags = ASYNC_SKIP_TEST | ASYNC_AUTOPROBE;
		serial_req.baud_base = base_baud;
		line = register_serial (&serial_req);
		if (line < 0) {
			printk (KERN_DEBUG
				"parport_serial: register_serial failed\n");
			continue;
		}
		priv->line[priv->num_ser++] = line;
		success = 1;
	}

	return success ? 0 : 1;
}

/* Register the parallel port(s) of a PCI card. */
static int __devinit parport_register (struct pci_dev *dev,
				       const struct pci_device_id *id)
{
	struct parport_pc_pci *card;
	struct parport_serial_private *priv = pci_get_drvdata (dev);
	int i = id->driver_data, n;
	int success = 0;

	priv->par = cards[id->driver_data];
	card = &priv->par;
	if (card->preinit_hook &&
	    card->preinit_hook (dev, card, PARPORT_IRQ_NONE, PARPORT_DMA_NONE))
		return -ENODEV;

	for (n = 0; n < card->numports; n++) {
		struct parport *port;
		int lo = card->addr[n].lo;
		int hi = card->addr[n].hi;
		unsigned long io_lo, io_hi;

		if (priv->num_par == ARRAY_SIZE (priv->port)) {
			printk (KERN_WARNING
				"parport_serial: %s: only %u parallel ports "
				"supported (%d reported)\n", pci_name (dev),
				ARRAY_SIZE (priv->port), card->numports);
			break;
		}

		io_lo = pci_resource_start (dev, lo);
		io_hi = 0;
		if ((hi >= 0) && (hi <= 6))
			io_hi = pci_resource_start (dev, hi);
		else if (hi > 6)
			io_lo += hi; /* Reinterpret the meaning of
                                        "hi" as an offset (see SYBA
                                        def.) */
		/* TODO: test if sharing interrupts works */
		printk (KERN_DEBUG "PCI parallel port detected: %04x:%04x, "
			"I/O at %#lx(%#lx)\n",
			parport_serial_pci_tbl[i].vendor,
			parport_serial_pci_tbl[i].device, io_lo, io_hi);
		port = parport_pc_probe_port (io_lo, io_hi, PARPORT_IRQ_NONE,
					      PARPORT_DMA_NONE, dev);
		if (port) {
			priv->port[priv->num_par++] = port;
			success = 1;
		}
	}

	if (card->postinit_hook)
		card->postinit_hook (dev, card, !success);

	return success ? 0 : 1;
}

static int __devinit parport_serial_pci_probe (struct pci_dev *dev,
					       const struct pci_device_id *id)
{
	struct parport_serial_private *priv;
	int err;

	priv = kmalloc (sizeof *priv, GFP_KERNEL);
	if (!priv)
		return -ENOMEM;
	priv->num_ser = priv->num_par = 0;
	pci_set_drvdata (dev, priv);

	err = pci_enable_device (dev);
	if (err) {
		pci_set_drvdata (dev, NULL);
		kfree (priv);
		return err;
	}

	if (parport_register (dev, id)) {
		pci_set_drvdata (dev, NULL);
		kfree (priv);
		return -ENODEV;
	}

	if (serial_register (dev, id)) {
		int i;
		for (i = 0; i < priv->num_par; i++)
			parport_pc_unregister_port (priv->port[i]);
		pci_set_drvdata (dev, NULL);
		kfree (priv);
		return -ENODEV;
	}

	return 0;
}

static void __devexit parport_serial_pci_remove (struct pci_dev *dev)
{
	struct parport_serial_private *priv = pci_get_drvdata (dev);
	int i;

	// Serial ports
	for (i = 0; i < priv->num_ser; i++) {
		unregister_serial (priv->line[i]);

		if (priv->ser.init_fn)
			(priv->ser.init_fn) (dev, &priv->ser, 0);
	}
	pci_set_drvdata (dev, NULL);
	
	// Parallel ports
	for (i = 0; i < priv->num_par; i++)
		parport_pc_unregister_port (priv->port[i]);

	kfree (priv);
	return;
}

static struct pci_driver parport_serial_pci_driver = {
	.name		= "parport_serial",
	.id_table	= parport_serial_pci_tbl,
	.probe		= parport_serial_pci_probe,
	.remove		= __devexit_p(parport_serial_pci_remove),
};


static int __init parport_serial_init (void)
{
	return pci_module_init (&parport_serial_pci_driver);
}

static void __exit parport_serial_exit (void)
{
	pci_unregister_driver (&parport_serial_pci_driver);
	return;
}

MODULE_AUTHOR("Tim Waugh <twaugh@redhat.com>");
MODULE_DESCRIPTION("Driver for common parallel+serial multi-I/O PCI cards");
MODULE_LICENSE("GPL");

module_init(parport_serial_init);
module_exit(parport_serial_exit);