File: /usr/src/linux/drivers/parport/parport_serial.c
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
30 #include <asm/serial.h>
31
32 enum parport_pc_pci_cards {
33 titan_110l = 0,
34 titan_210l,
35 netmos_9735,
36 netmos_9835,
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 };
47
48
49 /* each element directly indexed from enum list, above */
50 static struct parport_pc_pci {
51 int numports;
52 struct { /* BAR (base address registers) numbers in the config
53 space header */
54 int lo;
55 int hi; /* -1 if not there, >6 for offset-method (max
56 BAR is 6) */
57 } addr[4];
58 } cards[] __devinitdata = {
59 /* titan_110l */ { 1, { { 3, -1 }, } },
60 /* titan_210l */ { 1, { { 3, -1 }, } },
61 /* netmos_9735 (not tested) */ { 1, { { 2, 3 }, } },
62 /* netmos_9835 (not tested) */ { 1, { { 2, 3 }, } },
63 /* avlab_1s1p */ { 1, { { 1, 2}, } },
64 /* avlab_1s1p_650 */ { 1, { { 1, 2}, } },
65 /* avlab_1s1p_850 */ { 1, { { 1, 2}, } },
66 /* avlab_1s2p */ { 2, { { 1, 2}, { 3, 4 },} },
67 /* avlab_1s2p_650 */ { 2, { { 1, 2}, { 3, 4 },} },
68 /* avlab_1s2p_850 */ { 2, { { 1, 2}, { 3, 4 },} },
69 /* avlab_2s1p */ { 1, { { 2, 3}, } },
70 /* avlab_2s1p_650 */ { 1, { { 2, 3}, } },
71 /* avlab_2s1p_850 */ { 1, { { 2, 3}, } },
72 };
73
74 static struct pci_device_id parport_serial_pci_tbl[] __devinitdata = {
75 /* PCI cards */
76 { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_110L,
77 PCI_ANY_ID, PCI_ANY_ID, 0, 0, titan_110l },
78 { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_210L,
79 PCI_ANY_ID, PCI_ANY_ID, 0, 0, titan_210l },
80 { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9735,
81 PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9735 },
82 { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9835,
83 PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9835 },
84 /* PCI_VENDOR_ID_AVLAB/Intek21 has another bunch of cards ...*/
85 { 0x14db, 0x2110, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s1p},
86 { 0x14db, 0x2111, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s1p_650},
87 { 0x14db, 0x2112, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s1p_850},
88 { 0x14db, 0x2140, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s2p},
89 { 0x14db, 0x2141, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s2p_650},
90 { 0x14db, 0x2142, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s2p_850},
91 { 0x14db, 0x2160, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_2s1p},
92 { 0x14db, 0x2161, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_2s1p_650},
93 { 0x14db, 0x2162, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_2s1p_850},
94 { 0, } /* terminate list */
95 };
96 MODULE_DEVICE_TABLE(pci,parport_serial_pci_tbl);
97
98 struct pci_board_no_ids {
99 int flags;
100 int num_ports;
101 int base_baud;
102 int uart_offset;
103 int reg_shift;
104 int (*init_fn)(struct pci_dev *dev, struct pci_board_no_ids *board,
105 int enable);
106 int first_uart_offset;
107 };
108
109 static struct pci_board_no_ids pci_boards[] __devinitdata = {
110 /*
111 * PCI Flags, Number of Ports, Base (Maximum) Baud Rate,
112 * Offset to get to next UART's registers,
113 * Register shift to use for memory-mapped I/O,
114 * Initialization function, first UART offset
115 */
116
117 // Cards not tested are marked n/t
118 // If you have one of these cards and it works for you, please tell me..
119
120 /* titan_110l */ { SPCI_FL_BASE1 | SPCI_FL_BASE_TABLE, 1, 921600 },
121 /* titan_210l */ { SPCI_FL_BASE1 | SPCI_FL_BASE_TABLE, 2, 921600 },
122 /* netmos_9735 (n/t)*/ { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 2, 115200 },
123 /* netmos_9835 (n/t)*/ { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 2, 115200 },
124 /* avlab_1s1p (n/t) */ { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
125 /* avlab_1s1p_650 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
126 /* avlab_1s1p_850 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
127 /* avlab_1s2p (n/t) */ { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
128 /* avlab_1s2p_650 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
129 /* avlab_1s2p_850 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
130 /* avlab_2s1p (n/t) */ { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 2, 115200 },
131 /* avlab_2s1p_650 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 2, 115200 },
132 /* avlab_2s1p_850 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 2, 115200 },
133 };
134
135 struct parport_serial_private {
136 int num_ser;
137 int line[20];
138 struct pci_board_no_ids ser;
139 int num_par;
140 struct parport *port[PARPORT_MAX];
141 };
142
143 static int __devinit get_pci_port (struct pci_dev *dev,
144 struct pci_board_no_ids *board,
145 struct serial_struct *req,
146 int idx)
147 {
148 unsigned long port;
149 int base_idx;
150 int max_port;
151 int offset;
152
153 base_idx = SPCI_FL_GET_BASE(board->flags);
154 if (board->flags & SPCI_FL_BASE_TABLE)
155 base_idx += idx;
156
157 if (board->flags & SPCI_FL_REGION_SZ_CAP) {
158 max_port = pci_resource_len(dev, base_idx) / 8;
159 if (idx >= max_port)
160 return 1;
161 }
162
163 offset = board->first_uart_offset;
164
165 /* Timedia/SUNIX uses a mixture of BARs and offsets */
166 /* Ugh, this is ugly as all hell --- TYT */
167 if(dev->vendor == PCI_VENDOR_ID_TIMEDIA ) /* 0x1409 */
168 switch(idx) {
169 case 0: base_idx=0;
170 break;
171 case 1: base_idx=0; offset=8;
172 break;
173 case 2: base_idx=1;
174 break;
175 case 3: base_idx=1; offset=8;
176 break;
177 case 4: /* BAR 2*/
178 case 5: /* BAR 3 */
179 case 6: /* BAR 4*/
180 case 7: base_idx=idx-2; /* BAR 5*/
181 }
182
183 port = pci_resource_start(dev, base_idx) + offset;
184
185 if ((board->flags & SPCI_FL_BASE_TABLE) == 0)
186 port += idx * (board->uart_offset ? board->uart_offset : 8);
187
188 if (pci_resource_flags (dev, base_idx) & IORESOURCE_IO) {
189 int high_bits_offset = ((sizeof(long)-sizeof(int))*8);
190 req->port = port;
191 if (high_bits_offset)
192 req->port_high = port >> high_bits_offset;
193 else
194 req->port_high = 0;
195 return 0;
196 }
197 req->io_type = SERIAL_IO_MEM;
198 req->iomem_base = ioremap(port, board->uart_offset);
199 req->iomem_reg_shift = board->reg_shift;
200 req->port = 0;
201 return req->iomem_base ? 0 : 1;
202 }
203
204 /* Register the serial port(s) of a PCI card. */
205 static int __devinit serial_register (struct pci_dev *dev,
206 const struct pci_device_id *id)
207 {
208 struct pci_board_no_ids *board = &pci_boards[id->driver_data];
209 struct parport_serial_private *priv = pci_get_drvdata (dev);
210 struct serial_struct serial_req;
211 int base_baud;
212 int k;
213 int success = 0;
214
215 priv->ser = *board;
216 if (board->init_fn && ((board->init_fn) (dev, board, 1) != 0))
217 return 1;
218
219 base_baud = board->base_baud;
220 if (!base_baud)
221 base_baud = BASE_BAUD;
222 memset (&serial_req, 0, sizeof (serial_req));
223
224 for (k = 0; k < board->num_ports; k++) {
225 int line;
226 serial_req.irq = dev->irq;
227 if (get_pci_port (dev, board, &serial_req, k))
228 break;
229 serial_req.flags = ASYNC_SKIP_TEST | ASYNC_AUTOPROBE;
230 line = register_serial (&serial_req);
231 if (line < 0) {
232 printk (KERN_DEBUG
233 "parport_serial: register_serial failed\n");
234 continue;
235 }
236 priv->line[priv->num_ser++] = line;
237 success = 1;
238 }
239
240 return success ? 0 : 1;
241 }
242
243 /* Register the parallel port(s) of a PCI card. */
244 static int __devinit parport_register (struct pci_dev *dev,
245 const struct pci_device_id *id)
246 {
247 struct parport_serial_private *priv = pci_get_drvdata (dev);
248 int i = id->driver_data, n;
249 int success = 0;
250
251 for (n = 0; n < cards[i].numports; n++) {
252 struct parport *port;
253 int lo = cards[i].addr[n].lo;
254 int hi = cards[i].addr[n].hi;
255 unsigned long io_lo, io_hi;
256 io_lo = pci_resource_start (dev, lo);
257 io_hi = 0;
258 if ((hi >= 0) && (hi <= 6))
259 io_hi = pci_resource_start (dev, hi);
260 else if (hi > 6)
261 io_lo += hi; /* Reinterpret the meaning of
262 "hi" as an offset (see SYBA
263 def.) */
264 /* TODO: test if sharing interrupts works */
265 printk (KERN_DEBUG "PCI parallel port detected: %04x:%04x, "
266 "I/O at %#lx(%#lx)\n",
267 parport_serial_pci_tbl[i].vendor,
268 parport_serial_pci_tbl[i].device, io_lo, io_hi);
269 port = parport_pc_probe_port (io_lo, io_hi, PARPORT_IRQ_NONE,
270 PARPORT_DMA_NONE, dev);
271 if (port) {
272 priv->port[priv->num_par++] = port;
273 success = 1;
274 }
275 }
276
277 return success ? 0 : 1;
278 }
279
280 static int __devinit parport_serial_pci_probe (struct pci_dev *dev,
281 const struct pci_device_id *id)
282 {
283 struct parport_serial_private *priv;
284 int err;
285
286 priv = kmalloc (sizeof *priv, GFP_KERNEL);
287 if (!priv)
288 return -ENOMEM;
289 priv->num_ser = priv->num_par = 0;
290 pci_set_drvdata (dev, priv);
291
292 err = pci_enable_device (dev);
293 if (err) {
294 pci_set_drvdata (dev, NULL);
295 kfree (priv);
296 return err;
297 }
298
299 if (parport_register (dev, id)) {
300 pci_set_drvdata (dev, NULL);
301 kfree (priv);
302 return -ENODEV;
303 }
304
305 if (serial_register (dev, id)) {
306 int i;
307 for (i = 0; i < priv->num_par; i++)
308 parport_pc_unregister_port (priv->port[i]);
309 pci_set_drvdata (dev, NULL);
310 kfree (priv);
311 return -ENODEV;
312 }
313
314 return 0;
315 }
316
317 static void __devexit parport_serial_pci_remove (struct pci_dev *dev)
318 {
319 struct parport_serial_private *priv = pci_get_drvdata (dev);
320 int i;
321
322 // Serial ports
323 for (i = 0; i < priv->num_ser; i++) {
324 unregister_serial (priv->line[i]);
325
326 if (priv->ser.init_fn)
327 (priv->ser.init_fn) (dev, &priv->ser, 0);
328 }
329 pci_set_drvdata (dev, NULL);
330
331 // Parallel ports
332 for (i = 0; i < priv->num_par; i++)
333 parport_pc_unregister_port (priv->port[i]);
334
335 kfree (priv);
336 return;
337 }
338
339 static struct pci_driver parport_serial_pci_driver = {
340 name: "parport_serial",
341 id_table: parport_serial_pci_tbl,
342 probe: parport_serial_pci_probe,
343 remove: parport_serial_pci_remove,
344 };
345
346
347 static int __init parport_serial_init (void)
348 {
349 return pci_module_init (&parport_serial_pci_driver);
350 }
351
352 static void __exit parport_serial_exit (void)
353 {
354 pci_unregister_driver (&parport_serial_pci_driver);
355 return;
356 }
357
358 MODULE_AUTHOR("Tim Waugh <twaugh@redhat.com>");
359 MODULE_DESCRIPTION("Driver for common parallel+serial multi-I/O PCI cards");
360
361 module_init(parport_serial_init);
362 module_exit(parport_serial_exit);
363