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/8250_pci.h>
  27
  28 enum parport_pc_pci_cards {
  29         titan_110l = 0,
  30         titan_210l,
  31         netmos_9xx5_combo,
  32         netmos_9855,
  33         avlab_1s1p,
  34         avlab_1s2p,
  35         avlab_2s1p,
  36         siig_1s1p_10x,
  37         siig_2s1p_10x,
  38         siig_2p1s_20x,
  39         siig_1s1p_20x,
  40         siig_2s1p_20x,
  41 };
  42
  43 /* each element directly indexed from enum list, above */
  44 struct parport_pc_pci {
  45         int numports;
  46         struct { /* BAR (base address registers) numbers in the config
  47                     space header */
  48                 int lo;
  49                 int hi; /* -1 if not there, >6 for offset-method (max
  50                            BAR is 6) */
  51         } addr[4];
  52
  53         /* If set, this is called immediately after pci_enable_device.
  54          * If it returns non-zero, no probing will take place and the
  55          * ports will not be used. */
  56         int (*preinit_hook) (struct pci_dev *pdev, struct parport_pc_pci *card,
  57                                 int autoirq, int autodma);
  58
  59         /* If set, this is called after probing for ports.  If 'failed'
  60          * is non-zero we couldn't use any of the ports. */
  61         void (*postinit_hook) (struct pci_dev *pdev,
  62                                 struct parport_pc_pci *card, int failed);
  63 };
  64
  65 static int __devinit netmos_parallel_init(struct pci_dev *dev, struct parport_pc_pci *card, int autoirq, int autodma)
  66 {
  67         /*
  68          * Netmos uses the subdevice ID to indicate the number of parallel
  69          * and serial ports.  The form is 0x00PS, where <P> is the number of
  70          * parallel ports and <S> is the number of serial ports.
  71          */
  72         card->numports = (dev->subsystem_device & 0xf0) >> 4;
  73         return 0;
  74 }
  75
  76 static struct parport_pc_pci cards[] __devinitdata = {
  77         /* titan_110l */                { 1, { { 3, -1 }, } },
  78         /* titan_210l */                { 1, { { 3, -1 }, } },
  79         /* netmos_9xx5_combo */         { 1, { { 2, -1 }, }, netmos_parallel_init },
  80         /* netmos_9855 */               { 1, { { 0, -1 }, }, netmos_parallel_init },
  81         /* avlab_1s1p     */            { 1, { { 1, 2}, } },
  82         /* avlab_1s2p     */            { 2, { { 1, 2}, { 3, 4 },} },
  83         /* avlab_2s1p     */            { 1, { { 2, 3}, } },
  84         /* siig_1s1p_10x */             { 1, { { 3, 4 }, } },
  85         /* siig_2s1p_10x */             { 1, { { 4, 5 }, } },
  86         /* siig_2p1s_20x */             { 2, { { 1, 2 }, { 3, 4 }, } },
  87         /* siig_1s1p_20x */             { 1, { { 1, 2 }, } },
  88         /* siig_2s1p_20x */             { 1, { { 2, 3 }, } },
  89 };
  90
  91 static struct pci_device_id parport_serial_pci_tbl[] = {
  92         /* PCI cards */
  93         { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_110L,
  94           PCI_ANY_ID, PCI_ANY_ID, 0, 0, titan_110l },
  95         { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_210L,
  96           PCI_ANY_ID, PCI_ANY_ID, 0, 0, titan_210l },
  97         { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9735,
  98           PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
  99         { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9745,
 100           PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
 101         { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9835,
 102           PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
 103         { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9845,
 104           PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
 105         { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9855,
 106           PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9855 },
 107         /* PCI_VENDOR_ID_AVLAB/Intek21 has another bunch of cards ...*/
 108         { PCI_VENDOR_ID_AFAVLAB, 0x2110,
 109           PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s1p },
 110         { PCI_VENDOR_ID_AFAVLAB, 0x2111,
 111           PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s1p },
 112         { PCI_VENDOR_ID_AFAVLAB, 0x2112,
 113           PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s1p },
 114         { PCI_VENDOR_ID_AFAVLAB, 0x2140,
 115           PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s2p },
 116         { PCI_VENDOR_ID_AFAVLAB, 0x2141,
 117           PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s2p },
 118         { PCI_VENDOR_ID_AFAVLAB, 0x2142,
 119           PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s2p },
 120         { PCI_VENDOR_ID_AFAVLAB, 0x2160,
 121           PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_2s1p },
 122         { PCI_VENDOR_ID_AFAVLAB, 0x2161,
 123           PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_2s1p },
 124         { PCI_VENDOR_ID_AFAVLAB, 0x2162,
 125           PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_2s1p },
 126         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_10x_550,
 127           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_10x },
 128         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_10x_650,
 129           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_10x },
 130         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_10x_850,
 131           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_10x },
 132         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_10x_550,
 133           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_10x },
 134         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_10x_650,
 135           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_10x },
 136         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_10x_850,
 137           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_10x },
 138         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P1S_20x_550,
 139           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2p1s_20x },
 140         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P1S_20x_650,
 141           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2p1s_20x },
 142         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P1S_20x_850,
 143           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2p1s_20x },
 144         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_20x_550,
 145           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_20x },
 146         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_20x_650,
 147           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_20x },
 148         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_20x_850,
 149           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_20x },
 150         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_20x_550,
 151           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_20x },
 152         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_20x_650,
 153           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_20x },
 154         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_20x_850,
 155           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_20x },
 156
 157         { 0, } /* terminate list */
 158 };
 159 MODULE_DEVICE_TABLE(pci,parport_serial_pci_tbl);
 160
 161 /*
 162  * This table describes the serial "geometry" of these boards.  Any
 163  * quirks for these can be found in drivers/serial/8250_pci.c
 164  *
 165  * Cards not tested are marked n/t
 166  * If you have one of these cards and it works for you, please tell me..
 167  */
 168 static struct pciserial_board pci_parport_serial_boards[] __devinitdata = {
 169         [titan_110l] = {
 170                 .flags          = FL_BASE1 | FL_BASE_BARS,
 171                 .num_ports      = 1,
 172                 .base_baud      = 921600,
 173                 .uart_offset    = 8,
 174         },
 175         [titan_210l] = {
 176                 .flags          = FL_BASE1 | FL_BASE_BARS,
 177                 .num_ports      = 2,
 178                 .base_baud      = 921600,
 179                 .uart_offset    = 8,
 180         },
 181         [netmos_9xx5_combo] = {
 182                 .flags          = FL_BASE0 | FL_BASE_BARS,
 183                 .num_ports      = 1,
 184                 .base_baud      = 115200,
 185                 .uart_offset    = 8,
 186         },
 187         [netmos_9855] = {
 188                 .flags          = FL_BASE2 | FL_BASE_BARS,
 189                 .num_ports      = 1,
 190                 .base_baud      = 115200,
 191                 .uart_offset    = 8,
 192         },
 193         [avlab_1s1p] = { /* n/t */
 194                 .flags          = FL_BASE0 | FL_BASE_BARS,
 195                 .num_ports      = 1,
 196                 .base_baud      = 115200,
 197                 .uart_offset    = 8,
 198         },
 199         [avlab_1s2p] = { /* n/t */
 200                 .flags          = FL_BASE0 | FL_BASE_BARS,
 201                 .num_ports      = 1,
 202                 .base_baud      = 115200,
 203                 .uart_offset    = 8,
 204         },
 205         [avlab_2s1p] = { /* n/t */
 206                 .flags          = FL_BASE0 | FL_BASE_BARS,
 207                 .num_ports      = 2,
 208                 .base_baud      = 115200,
 209                 .uart_offset    = 8,
 210         },
 211         [siig_1s1p_10x] = {
 212                 .flags          = FL_BASE2,
 213                 .num_ports      = 1,
 214                 .base_baud      = 460800,
 215                 .uart_offset    = 8,
 216         },
 217         [siig_2s1p_10x] = {
 218                 .flags          = FL_BASE2,
 219                 .num_ports      = 1,
 220                 .base_baud      = 921600,
 221                 .uart_offset    = 8,
 222         },
 223         [siig_2p1s_20x] = {
 224                 .flags          = FL_BASE0,
 225                 .num_ports      = 1,
 226                 .base_baud      = 921600,
 227                 .uart_offset    = 8,
 228         },
 229         [siig_1s1p_20x] = {
 230                 .flags          = FL_BASE0,
 231                 .num_ports      = 1,
 232                 .base_baud      = 921600,
 233                 .uart_offset    = 8,
 234         },
 235         [siig_2s1p_20x] = {
 236                 .flags          = FL_BASE0,
 237                 .num_ports      = 1,
 238                 .base_baud      = 921600,
 239                 .uart_offset    = 8,
 240         },
 241 };
 242
 243 struct parport_serial_private {
 244         struct serial_private   *serial;
 245         int num_par;
 246         struct parport *port[PARPORT_MAX];
 247         struct parport_pc_pci par;
 248 };
 249
 250 /* Register the serial port(s) of a PCI card. */
 251 static int __devinit serial_register (struct pci_dev *dev,
 252                                       const struct pci_device_id *id)
 253 {
 254         struct parport_serial_private *priv = pci_get_drvdata (dev);
 255         struct pciserial_board *board;
 256         struct serial_private *serial;
 257
 258         board = &pci_parport_serial_boards[id->driver_data];
 259         serial = pciserial_init_ports(dev, board);
 260
 261         if (IS_ERR(serial))
 262                 return PTR_ERR(serial);
 263
 264         priv->serial = serial;
 265         return 0;
 266 }
 267
 268 /* Register the parallel port(s) of a PCI card. */
 269 static int __devinit parport_register (struct pci_dev *dev,
 270                                        const struct pci_device_id *id)
 271 {
 272         struct parport_pc_pci *card;
 273         struct parport_serial_private *priv = pci_get_drvdata (dev);
 274         int n, success = 0;
 275
 276         priv->par = cards[id->driver_data];
 277         card = &priv->par;
 278         if (card->preinit_hook &&
 279             card->preinit_hook (dev, card, PARPORT_IRQ_NONE, PARPORT_DMA_NONE))
 280                 return -ENODEV;
 281
 282         for (n = 0; n < card->numports; n++) {
 283                 struct parport *port;
 284                 int lo = card->addr[n].lo;
 285                 int hi = card->addr[n].hi;
 286                 unsigned long io_lo, io_hi;
 287
 288                 if (priv->num_par == ARRAY_SIZE (priv->port)) {
 289                         printk (KERN_WARNING
 290                                 "parport_serial: %s: only %zu parallel ports "
 291                                 "supported (%d reported)\n", pci_name (dev),
 292                                 ARRAY_SIZE(priv->port), card->numports);
 293                         break;
 294                 }
 295
 296                 io_lo = pci_resource_start (dev, lo);
 297                 io_hi = 0;
 298                 if ((hi >= 0) && (hi <= 6))
 299                         io_hi = pci_resource_start (dev, hi);
 300                 else if (hi > 6)
 301                         io_lo += hi; /* Reinterpret the meaning of
 302                                         "hi" as an offset (see SYBA
 303                                         def.) */
 304                 /* TODO: test if sharing interrupts works */
 305                 dev_dbg(&dev->dev, "PCI parallel port detected: I/O at "
 306                         "%#lx(%#lx)\n", io_lo, io_hi);
 307                 port = parport_pc_probe_port (io_lo, io_hi, PARPORT_IRQ_NONE,
 308                                               PARPORT_DMA_NONE, &dev->dev);
 309                 if (port) {
 310                         priv->port[priv->num_par++] = port;
 311                         success = 1;
 312                 }
 313         }
 314
 315         if (card->postinit_hook)
 316                 card->postinit_hook (dev, card, !success);
 317
 318         return 0;
 319 }
 320
 321 static int __devinit parport_serial_pci_probe (struct pci_dev *dev,
 322                                                const struct pci_device_id *id)
 323 {
 324         struct parport_serial_private *priv;
 325         int err;
 326
 327         priv = kzalloc (sizeof *priv, GFP_KERNEL);
 328         if (!priv)
 329                 return -ENOMEM;
 330         pci_set_drvdata (dev, priv);
 331
 332         err = pci_enable_device (dev);
 333         if (err) {
 334                 pci_set_drvdata (dev, NULL);
 335                 kfree (priv);
 336                 return err;
 337         }
 338
 339         if (parport_register (dev, id)) {
 340                 pci_set_drvdata (dev, NULL);
 341                 kfree (priv);
 342                 return -ENODEV;
 343         }
 344
 345         if (serial_register (dev, id)) {
 346                 int i;
 347                 for (i = 0; i < priv->num_par; i++)
 348                         parport_pc_unregister_port (priv->port[i]);
 349                 pci_set_drvdata (dev, NULL);
 350                 kfree (priv);
 351                 return -ENODEV;
 352         }
 353
 354         return 0;
 355 }
 356
 357 static void __devexit parport_serial_pci_remove (struct pci_dev *dev)
 358 {
 359         struct parport_serial_private *priv = pci_get_drvdata (dev);
 360         int i;
 361
 362         pci_set_drvdata(dev, NULL);
 363
 364         // Serial ports
 365         if (priv->serial)
 366                 pciserial_remove_ports(priv->serial);
 367
 368         // Parallel ports
 369         for (i = 0; i < priv->num_par; i++)
 370                 parport_pc_unregister_port (priv->port[i]);
 371
 372         kfree (priv);
 373         return;
 374 }
 375
 376 #ifdef CONFIG_PM
 377 static int parport_serial_pci_suspend(struct pci_dev *dev, pm_message_t state)
 378 {
 379         struct parport_serial_private *priv = pci_get_drvdata(dev);
 380
 381         if (priv->serial)
 382                 pciserial_suspend_ports(priv->serial);
 383
 384         /* FIXME: What about parport? */
 385
 386         pci_save_state(dev);
 387         pci_set_power_state(dev, pci_choose_state(dev, state));
 388         return 0;
 389 }
 390
 391 static int parport_serial_pci_resume(struct pci_dev *dev)
 392 {
 393         struct parport_serial_private *priv = pci_get_drvdata(dev);
 394         int err;
 395
 396         pci_set_power_state(dev, PCI_D0);
 397         pci_restore_state(dev);
 398
 399         /*
 400          * The device may have been disabled.  Re-enable it.
 401          */
 402         err = pci_enable_device(dev);
 403         if (err) {
 404                 printk(KERN_ERR "parport_serial: %s: error enabling "
 405                         "device for resume (%d)\n", pci_name(dev), err);
 406                 return err;
 407         }
 408
 409         if (priv->serial)
 410                 pciserial_resume_ports(priv->serial);
 411
 412         /* FIXME: What about parport? */
 413
 414         return 0;
 415 }
 416 #endif
 417
 418 static struct pci_driver parport_serial_pci_driver = {
 419         .name           = "parport_serial",
 420         .id_table       = parport_serial_pci_tbl,
 421         .probe          = parport_serial_pci_probe,
 422         .remove         = __devexit_p(parport_serial_pci_remove),
 423 #ifdef CONFIG_PM
 424         .suspend        = parport_serial_pci_suspend,
 425         .resume         = parport_serial_pci_resume,
 426 #endif
 427 };
 428
 429
 430 static int __init parport_serial_init (void)
 431 {
 432         return pci_register_driver (&parport_serial_pci_driver);
 433 }
 434
 435 static void __exit parport_serial_exit (void)
 436 {
 437         pci_unregister_driver (&parport_serial_pci_driver);
 438         return;
 439 }
 440
 441 MODULE_AUTHOR("Tim Waugh <twaugh@redhat.com>");
 442 MODULE_DESCRIPTION("Driver for common parallel+serial multi-I/O PCI cards");
 443 MODULE_LICENSE("GPL");
 444
 445 module_init(parport_serial_init);
 446 module_exit(parport_serial_exit);