?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
[TG3]: Set minimal hw interrupt mitigation.
[linux-2.6/verdex.git] / drivers / parport / parport_serial.c
blob6715a17b5d0fee4c526f0b67a0f5ffffcda88354
1 /*
2 * Support for common PCI multi-I/O cards (which is most of them)
3 *
4 * Copyright (C) 2001 Tim Waugh <twaugh@redhat.com>
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 *
12 * Multi-function PCI cards are supposed to present separate logical
13 * devices on the bus. A common thing to do seems to be to just use
14 * one logical device with lots of base address registers for both
15 * parallel ports and serial ports. This driver is for dealing with
16 * that.
17 *
18 */
19
20 #include <linux/types.h>
21 #include <linux/module.h>
22 #include <linux/init.h>
23 #include <linux/pci.h>
24 #include <linux/parport.h>
25 #include <linux/parport_pc.h>
26 #include <linux/serial.h>
27 #include <linux/serialP.h>
28 #include <linux/list.h>
29 #include <linux/8250_pci.h>
30
31 #include <asm/serial.h>
32
33 enum parport_pc_pci_cards {
34 titan_110l = 0,
35 titan_210l,
36 netmos_9xx5_combo,
37 avlab_1s1p,
38 avlab_1s1p_650,
39 avlab_1s1p_850,
40 avlab_1s2p,
41 avlab_1s2p_650,
42 avlab_1s2p_850,
43 avlab_2s1p,
44 avlab_2s1p_650,
45 avlab_2s1p_850,
46 siig_1s1p_10x,
47 siig_2s1p_10x,
48 siig_2p1s_20x,
49 siig_1s1p_20x,
50 siig_2s1p_20x,
51 };
52
53 /* each element directly indexed from enum list, above */
54 struct parport_pc_pci {
55 int numports;
56 struct { /* BAR (base address registers) numbers in the config
57 space header */
58 int lo;
59 int hi; /* -1 if not there, >6 for offset-method (max
60 BAR is 6) */
61 } addr[4];
62
63 /* If set, this is called immediately after pci_enable_device.
64 * If it returns non-zero, no probing will take place and the
65 * ports will not be used. */
66 int (*preinit_hook) (struct pci_dev *pdev, struct parport_pc_pci *card,
67 int autoirq, int autodma);
68
69 /* If set, this is called after probing for ports. If 'failed'
70 * is non-zero we couldn't use any of the ports. */
71 void (*postinit_hook) (struct pci_dev *pdev,
72 struct parport_pc_pci *card, int failed);
73 };
74
75 static int __devinit netmos_parallel_init(struct pci_dev *dev, struct parport_pc_pci *card, int autoirq, int autodma)
76 {
77 /*
78 * Netmos uses the subdevice ID to indicate the number of parallel
79 * and serial ports. The form is 0x00PS, where <P> is the number of
80 * parallel ports and <S> is the number of serial ports.
81 */
82 card->numports = (dev->subsystem_device & 0xf0) >> 4;
83 return 0;
84 }
85
86 static struct parport_pc_pci cards[] __devinitdata = {
87 /* titan_110l */ { 1, { { 3, -1 }, } },
88 /* titan_210l */ { 1, { { 3, -1 }, } },
89 /* netmos_9xx5_combo */ { 1, { { 2, -1 }, }, netmos_parallel_init },
90 /* avlab_1s1p */ { 1, { { 1, 2}, } },
91 /* avlab_1s1p_650 */ { 1, { { 1, 2}, } },
92 /* avlab_1s1p_850 */ { 1, { { 1, 2}, } },
93 /* avlab_1s2p */ { 2, { { 1, 2}, { 3, 4 },} },
94 /* avlab_1s2p_650 */ { 2, { { 1, 2}, { 3, 4 },} },
95 /* avlab_1s2p_850 */ { 2, { { 1, 2}, { 3, 4 },} },
96 /* avlab_2s1p */ { 1, { { 2, 3}, } },
97 /* avlab_2s1p_650 */ { 1, { { 2, 3}, } },
98 /* avlab_2s1p_850 */ { 1, { { 2, 3}, } },
99 /* siig_1s1p_10x */ { 1, { { 3, 4 }, } },
100 /* siig_2s1p_10x */ { 1, { { 4, 5 }, } },
101 /* siig_2p1s_20x */ { 2, { { 1, 2 }, { 3, 4 }, } },
102 /* siig_1s1p_20x */ { 1, { { 1, 2 }, } },
103 /* siig_2s1p_20x */ { 1, { { 2, 3 }, } },
104 };
105
106 static struct pci_device_id parport_serial_pci_tbl[] = {
107 /* PCI cards */
108 { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_110L,
109 PCI_ANY_ID, PCI_ANY_ID, 0, 0, titan_110l },
110 { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_210L,
111 PCI_ANY_ID, PCI_ANY_ID, 0, 0, titan_210l },
112 { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9735,
113 PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
114 { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9745,
115 PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
116 { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9835,
117 PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
118 { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9835,
119 PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
120 { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9845,
121 PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
122 { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9855,
123 PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
124 /* PCI_VENDOR_ID_AVLAB/Intek21 has another bunch of cards ...*/
125 { 0x14db, 0x2110, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s1p},
126 { 0x14db, 0x2111, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s1p_650},
127 { 0x14db, 0x2112, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s1p_850},
128 { 0x14db, 0x2140, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s2p},
129 { 0x14db, 0x2141, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s2p_650},
130 { 0x14db, 0x2142, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s2p_850},
131 { 0x14db, 0x2160, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_2s1p},
132 { 0x14db, 0x2161, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_2s1p_650},
133 { 0x14db, 0x2162, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_2s1p_850},
134 { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_10x_550,
135 PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_10x },
136 { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_10x_650,
137 PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_10x },
138 { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_10x_850,
139 PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_10x },
140 { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_10x_550,
141 PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_10x },
142 { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_10x_650,
143 PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_10x },
144 { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_10x_850,
145 PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_10x },
146 { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P1S_20x_550,
147 PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2p1s_20x },
148 { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P1S_20x_650,
149 PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2p1s_20x },
150 { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P1S_20x_850,
151 PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2p1s_20x },
152 { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_20x_550,
153 PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_20x },
154 { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_20x_650,
155 PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_20x },
156 { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_20x_850,
157 PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_20x },
158 { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_20x_550,
159 PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_20x },
160 { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_20x_650,
161 PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_20x },
162 { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_20x_850,
163 PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_20x },
164
165 { 0, } /* terminate list */
166 };
167 MODULE_DEVICE_TABLE(pci,parport_serial_pci_tbl);
168
169 struct pci_board_no_ids {
170 int flags;
171 int num_ports;
172 int base_baud;
173 int uart_offset;
174 int reg_shift;
175 int (*init_fn)(struct pci_dev *dev, struct pci_board_no_ids *board,
176 int enable);
177 int first_uart_offset;
178 };
179
180 static int __devinit siig10x_init_fn(struct pci_dev *dev, struct pci_board_no_ids *board, int enable)
181 {
182 return pci_siig10x_fn(dev, enable);
183 }
184
185 static int __devinit siig20x_init_fn(struct pci_dev *dev, struct pci_board_no_ids *board, int enable)
186 {
187 return pci_siig20x_fn(dev, enable);
188 }
189
190 static int __devinit netmos_serial_init(struct pci_dev *dev, struct pci_board_no_ids *board, int enable)
191 {
192 board->num_ports = dev->subsystem_device & 0xf;
193 return 0;
194 }
195
196 static struct pci_board_no_ids pci_boards[] __devinitdata = {
197 /*
198 * PCI Flags, Number of Ports, Base (Maximum) Baud Rate,
199 * Offset to get to next UART's registers,
200 * Register shift to use for memory-mapped I/O,
201 * Initialization function, first UART offset
202 */
203
204 // Cards not tested are marked n/t
205 // If you have one of these cards and it works for you, please tell me..
206
207 /* titan_110l */ { SPCI_FL_BASE1 | SPCI_FL_BASE_TABLE, 1, 921600 },
208 /* titan_210l */ { SPCI_FL_BASE1 | SPCI_FL_BASE_TABLE, 2, 921600 },
209 /* netmos_9xx5_combo */ { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200, 0, 0, netmos_serial_init },
210 /* avlab_1s1p (n/t) */ { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
211 /* avlab_1s1p_650 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
212 /* avlab_1s1p_850 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
213 /* avlab_1s2p (n/t) */ { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
214 /* avlab_1s2p_650 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
215 /* avlab_1s2p_850 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
216 /* avlab_2s1p (n/t) */ { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 2, 115200 },
217 /* avlab_2s1p_650 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 2, 115200 },
218 /* avlab_2s1p_850 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 2, 115200 },
219 /* siig_1s1p_10x */ { SPCI_FL_BASE2, 1, 460800, 0, 0, siig10x_init_fn },
220 /* siig_2s1p_10x */ { SPCI_FL_BASE2, 1, 921600, 0, 0, siig10x_init_fn },
221 /* siig_2p1s_20x */ { SPCI_FL_BASE0, 1, 921600, 0, 0, siig20x_init_fn },
222 /* siig_1s1p_20x */ { SPCI_FL_BASE0, 1, 921600, 0, 0, siig20x_init_fn },
223 /* siig_2s1p_20x */ { SPCI_FL_BASE0, 1, 921600, 0, 0, siig20x_init_fn },
224 };
225
226 struct parport_serial_private {
227 int num_ser;
228 int line[20];
229 struct pci_board_no_ids ser;
230 int num_par;
231 struct parport *port[PARPORT_MAX];
232 struct parport_pc_pci par;
233 };
234
235 static int __devinit get_pci_port (struct pci_dev *dev,
236 struct pci_board_no_ids *board,
237 struct serial_struct *req,
238 int idx)
239 {
240 unsigned long port;
241 int base_idx;
242 int max_port;
243 int offset;
244
245 base_idx = SPCI_FL_GET_BASE(board->flags);
246 if (board->flags & SPCI_FL_BASE_TABLE)
247 base_idx += idx;
248
249 if (board->flags & SPCI_FL_REGION_SZ_CAP) {
250 max_port = pci_resource_len(dev, base_idx) / 8;
251 if (idx >= max_port)
252 return 1;
253 }
254
255 offset = board->first_uart_offset;
256
257 /* Timedia/SUNIX uses a mixture of BARs and offsets */
258 /* Ugh, this is ugly as all hell --- TYT */
259 if(dev->vendor == PCI_VENDOR_ID_TIMEDIA ) /* 0x1409 */
260 switch(idx) {
261 case 0: base_idx=0;
262 break;
263 case 1: base_idx=0; offset=8;
264 break;
265 case 2: base_idx=1;
266 break;
267 case 3: base_idx=1; offset=8;
268 break;
269 case 4: /* BAR 2*/
270 case 5: /* BAR 3 */
271 case 6: /* BAR 4*/
272 case 7: base_idx=idx-2; /* BAR 5*/
273 }
274
275 port = pci_resource_start(dev, base_idx) + offset;
276
277 if ((board->flags & SPCI_FL_BASE_TABLE) == 0)
278 port += idx * (board->uart_offset ? board->uart_offset : 8);
279
280 if (pci_resource_flags (dev, base_idx) & IORESOURCE_IO) {
281 int high_bits_offset = ((sizeof(long)-sizeof(int))*8);
282 req->port = port;
283 if (high_bits_offset)
284 req->port_high = port >> high_bits_offset;
285 else
286 req->port_high = 0;
287 return 0;
288 }
289 req->io_type = SERIAL_IO_MEM;
290 req->iomem_base = ioremap(port, board->uart_offset);
291 req->iomem_reg_shift = board->reg_shift;
292 req->port = 0;
293 return req->iomem_base ? 0 : 1;
294 }
295
296 /* Register the serial port(s) of a PCI card. */
297 static int __devinit serial_register (struct pci_dev *dev,
298 const struct pci_device_id *id)
299 {
300 struct pci_board_no_ids *board;
301 struct parport_serial_private *priv = pci_get_drvdata (dev);
302 struct serial_struct serial_req;
303 int base_baud;
304 int k;
305 int success = 0;
306
307 priv->ser = pci_boards[id->driver_data];
308 board = &priv->ser;
309 if (board->init_fn && ((board->init_fn) (dev, board, 1) != 0))
310 return 1;
311
312 base_baud = board->base_baud;
313 if (!base_baud)
314 base_baud = BASE_BAUD;
315 memset (&serial_req, 0, sizeof (serial_req));
316
317 for (k = 0; k < board->num_ports; k++) {
318 int line;
319
320 if (priv->num_ser == ARRAY_SIZE (priv->line)) {
321 printk (KERN_WARNING
322 "parport_serial: %s: only %u serial lines "
323 "supported (%d reported)\n", pci_name (dev),
324 ARRAY_SIZE (priv->line), board->num_ports);
325 break;
326 }
327
328 serial_req.irq = dev->irq;
329 if (get_pci_port (dev, board, &serial_req, k))
330 break;
331 serial_req.flags = ASYNC_SKIP_TEST | ASYNC_AUTOPROBE;
332 serial_req.baud_base = base_baud;
333 line = register_serial (&serial_req);
334 if (line < 0) {
335 printk (KERN_DEBUG
336 "parport_serial: register_serial failed\n");
337 continue;
338 }
339 priv->line[priv->num_ser++] = line;
340 success = 1;
341 }
342
343 return success ? 0 : 1;
344 }
345
346 /* Register the parallel port(s) of a PCI card. */
347 static int __devinit parport_register (struct pci_dev *dev,
348 const struct pci_device_id *id)
349 {
350 struct parport_pc_pci *card;
351 struct parport_serial_private *priv = pci_get_drvdata (dev);
352 int i = id->driver_data, n;
353 int success = 0;
354
355 priv->par = cards[id->driver_data];
356 card = &priv->par;
357 if (card->preinit_hook &&
358 card->preinit_hook (dev, card, PARPORT_IRQ_NONE, PARPORT_DMA_NONE))
359 return -ENODEV;
360
361 for (n = 0; n < card->numports; n++) {
362 struct parport *port;
363 int lo = card->addr[n].lo;
364 int hi = card->addr[n].hi;
365 unsigned long io_lo, io_hi;
366
367 if (priv->num_par == ARRAY_SIZE (priv->port)) {
368 printk (KERN_WARNING
369 "parport_serial: %s: only %u parallel ports "
370 "supported (%d reported)\n", pci_name (dev),
371 ARRAY_SIZE (priv->port), card->numports);
372 break;
373 }
374
375 io_lo = pci_resource_start (dev, lo);
376 io_hi = 0;
377 if ((hi >= 0) && (hi <= 6))
378 io_hi = pci_resource_start (dev, hi);
379 else if (hi > 6)
380 io_lo += hi; /* Reinterpret the meaning of
381 "hi" as an offset (see SYBA
382 def.) */
383 /* TODO: test if sharing interrupts works */
384 printk (KERN_DEBUG "PCI parallel port detected: %04x:%04x, "
385 "I/O at %#lx(%#lx)\n",
386 parport_serial_pci_tbl[i].vendor,
387 parport_serial_pci_tbl[i].device, io_lo, io_hi);
388 port = parport_pc_probe_port (io_lo, io_hi, PARPORT_IRQ_NONE,
389 PARPORT_DMA_NONE, dev);
390 if (port) {
391 priv->port[priv->num_par++] = port;
392 success = 1;
393 }
394 }
395
396 if (card->postinit_hook)
397 card->postinit_hook (dev, card, !success);
398
399 return success ? 0 : 1;
400 }
401
402 static int __devinit parport_serial_pci_probe (struct pci_dev *dev,
403 const struct pci_device_id *id)
404 {
405 struct parport_serial_private *priv;
406 int err;
407
408 priv = kmalloc (sizeof *priv, GFP_KERNEL);
409 if (!priv)
410 return -ENOMEM;
411 priv->num_ser = priv->num_par = 0;
412 pci_set_drvdata (dev, priv);
413
414 err = pci_enable_device (dev);
415 if (err) {
416 pci_set_drvdata (dev, NULL);
417 kfree (priv);
418 return err;
419 }
420
421 if (parport_register (dev, id)) {
422 pci_set_drvdata (dev, NULL);
423 kfree (priv);
424 return -ENODEV;
425 }
426
427 if (serial_register (dev, id)) {
428 int i;
429 for (i = 0; i < priv->num_par; i++)
430 parport_pc_unregister_port (priv->port[i]);
431 pci_set_drvdata (dev, NULL);
432 kfree (priv);
433 return -ENODEV;
434 }
435
436 return 0;
437 }
438
439 static void __devexit parport_serial_pci_remove (struct pci_dev *dev)
440 {
441 struct parport_serial_private *priv = pci_get_drvdata (dev);
442 int i;
443
444 // Serial ports
445 for (i = 0; i < priv->num_ser; i++) {
446 unregister_serial (priv->line[i]);
447
448 if (priv->ser.init_fn)
449 (priv->ser.init_fn) (dev, &priv->ser, 0);
450 }
451 pci_set_drvdata (dev, NULL);
452
453 // Parallel ports
454 for (i = 0; i < priv->num_par; i++)
455 parport_pc_unregister_port (priv->port[i]);
456
457 kfree (priv);
458 return;
459 }
460
461 static struct pci_driver parport_serial_pci_driver = {
462 .name = "parport_serial",
463 .id_table = parport_serial_pci_tbl,
464 .probe = parport_serial_pci_probe,
465 .remove = __devexit_p(parport_serial_pci_remove),
466 };
467
468
469 static int __init parport_serial_init (void)
470 {
471 return pci_module_init (&parport_serial_pci_driver);
472 }
473
474 static void __exit parport_serial_exit (void)
475 {
476 pci_unregister_driver (&parport_serial_pci_driver);
477 return;
478 }
479
480 MODULE_AUTHOR("Tim Waugh <twaugh@redhat.com>");
481 MODULE_DESCRIPTION("Driver for common parallel+serial multi-I/O PCI cards");
482 MODULE_LICENSE("GPL");
483
484 module_init(parport_serial_init);
485 module_exit(parport_serial_exit);
Verdex Pro support