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/interrupt.h>
  25 #include <linux/parport.h>
  26 #include <linux/parport_pc.h>
  27 #include <linux/8250_pci.h>
  28
  29 enum parport_pc_pci_cards {
  30         titan_110l = 0,
  31         titan_210l,
  32         netmos_9xx5_combo,
  33         netmos_9855,
  34         netmos_9855_2p,
  35         avlab_1s1p,
  36         avlab_1s2p,
  37         avlab_2s1p,
  38         siig_1s1p_10x,
  39         siig_2s1p_10x,
  40         siig_2p1s_20x,
  41         siig_1s1p_20x,
  42         siig_2s1p_20x,
  43 };
  44
  45 /* each element directly indexed from enum list, above */
  46 struct parport_pc_pci {
  47         int numports;
  48         struct { /* BAR (base address registers) numbers in the config
  49                     space header */
  50                 int lo;
  51                 int hi; /* -1 if not there, >6 for offset-method (max
  52                            BAR is 6) */
  53         } addr[4];
  54
  55         /* If set, this is called immediately after pci_enable_device.
  56          * If it returns non-zero, no probing will take place and the
  57          * ports will not be used. */
  58         int (*preinit_hook) (struct pci_dev *pdev, struct parport_pc_pci *card,
  59                                 int autoirq, int autodma);
  60
  61         /* If set, this is called after probing for ports.  If 'failed'
  62          * is non-zero we couldn't use any of the ports. */
  63         void (*postinit_hook) (struct pci_dev *pdev,
  64                                 struct parport_pc_pci *card, int failed);
  65 };
  66
  67 static int __devinit netmos_parallel_init(struct pci_dev *dev, struct parport_pc_pci *par, int autoirq, int autodma)
  68 {
  69         /* the rule described below doesn't hold for this device */
  70         if (dev->device == PCI_DEVICE_ID_NETMOS_9835 &&
  71                         dev->subsystem_vendor == PCI_VENDOR_ID_IBM &&
  72                         dev->subsystem_device == 0x0299)
  73                 return -ENODEV;
  74         /*
  75          * Netmos uses the subdevice ID to indicate the number of parallel
  76          * and serial ports.  The form is 0x00PS, where <P> is the number of
  77          * parallel ports and <S> is the number of serial ports.
  78          */
  79         par->numports = (dev->subsystem_device & 0xf0) >> 4;
  80         if (par->numports > ARRAY_SIZE(par->addr))
  81                 par->numports = ARRAY_SIZE(par->addr);
  82         /*
  83          * This function is currently only called for cards with up to
  84          * one parallel port.
  85          * Parallel port BAR is either before or after serial ports BARS;
  86          * hence, lo should be either 0 or equal to the number of serial ports.
  87          */
  88         if (par->addr[0].lo != 0)
  89                 par->addr[0].lo = dev->subsystem_device & 0xf;
  90         return 0;
  91 }
  92
  93 static struct parport_pc_pci cards[] __devinitdata = {
  94         /* titan_110l */                { 1, { { 3, -1 }, } },
  95         /* titan_210l */                { 1, { { 3, -1 }, } },
  96         /* netmos_9xx5_combo */         { 1, { { 2, -1 }, }, netmos_parallel_init },
  97         /* netmos_9855 */               { 1, { { 0, -1 }, }, netmos_parallel_init },
  98         /* netmos_9855_2p */            { 2, { { 0, -1 }, { 2, -1 }, } },
  99         /* avlab_1s1p     */            { 1, { { 1, 2}, } },
 100         /* avlab_1s2p     */            { 2, { { 1, 2}, { 3, 4 },} },
 101         /* avlab_2s1p     */            { 1, { { 2, 3}, } },
 102         /* siig_1s1p_10x */             { 1, { { 3, 4 }, } },
 103         /* siig_2s1p_10x */             { 1, { { 4, 5 }, } },
 104         /* siig_2p1s_20x */             { 2, { { 1, 2 }, { 3, 4 }, } },
 105         /* siig_1s1p_20x */             { 1, { { 1, 2 }, } },
 106         /* siig_2s1p_20x */             { 1, { { 2, 3 }, } },
 107 };
 108
 109 static struct pci_device_id parport_serial_pci_tbl[] = {
 110         /* PCI cards */
 111         { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_110L,
 112           PCI_ANY_ID, PCI_ANY_ID, 0, 0, titan_110l },
 113         { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_210L,
 114           PCI_ANY_ID, PCI_ANY_ID, 0, 0, titan_210l },
 115         { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9735,
 116           PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
 117         { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9745,
 118           PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
 119         { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9835,
 120           PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
 121         { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9845,
 122           PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
 123         { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9855,
 124           0x1000, 0x0020, 0, 0, netmos_9855_2p },
 125         { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9855,
 126           0x1000, 0x0022, 0, 0, netmos_9855_2p },
 127         { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9855,
 128           PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9855 },
 129         /* PCI_VENDOR_ID_AVLAB/Intek21 has another bunch of cards ...*/
 130         { PCI_VENDOR_ID_AFAVLAB, 0x2110,
 131           PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s1p },
 132         { PCI_VENDOR_ID_AFAVLAB, 0x2111,
 133           PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s1p },
 134         { PCI_VENDOR_ID_AFAVLAB, 0x2112,
 135           PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s1p },
 136         { PCI_VENDOR_ID_AFAVLAB, 0x2140,
 137           PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s2p },
 138         { PCI_VENDOR_ID_AFAVLAB, 0x2141,
 139           PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s2p },
 140         { PCI_VENDOR_ID_AFAVLAB, 0x2142,
 141           PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s2p },
 142         { PCI_VENDOR_ID_AFAVLAB, 0x2160,
 143           PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_2s1p },
 144         { PCI_VENDOR_ID_AFAVLAB, 0x2161,
 145           PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_2s1p },
 146         { PCI_VENDOR_ID_AFAVLAB, 0x2162,
 147           PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_2s1p },
 148         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_10x_550,
 149           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_10x },
 150         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_10x_650,
 151           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_10x },
 152         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_10x_850,
 153           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_10x },
 154         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_10x_550,
 155           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_10x },
 156         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_10x_650,
 157           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_10x },
 158         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_10x_850,
 159           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_10x },
 160         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P1S_20x_550,
 161           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2p1s_20x },
 162         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P1S_20x_650,
 163           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2p1s_20x },
 164         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P1S_20x_850,
 165           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2p1s_20x },
 166         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_20x_550,
 167           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_20x },
 168         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_20x_650,
 169           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_20x },
 170         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_20x_850,
 171           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_20x },
 172         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_20x_550,
 173           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_20x },
 174         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_20x_650,
 175           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_20x },
 176         { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_20x_850,
 177           PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_20x },
 178
 179         { 0, } /* terminate list */
 180 };
 181 MODULE_DEVICE_TABLE(pci,parport_serial_pci_tbl);
 182
 183 /*
 184  * This table describes the serial "geometry" of these boards.  Any
 185  * quirks for these can be found in drivers/serial/8250_pci.c
 186  *
 187  * Cards not tested are marked n/t
 188  * If you have one of these cards and it works for you, please tell me..
 189  */
 190 static struct pciserial_board pci_parport_serial_boards[] __devinitdata = {
 191         [titan_110l] = {
 192                 .flags          = FL_BASE1 | FL_BASE_BARS,
 193                 .num_ports      = 1,
 194                 .base_baud      = 921600,
 195                 .uart_offset    = 8,
 196         },
 197         [titan_210l] = {
 198                 .flags          = FL_BASE1 | FL_BASE_BARS,
 199                 .num_ports      = 2,
 200                 .base_baud      = 921600,
 201                 .uart_offset    = 8,
 202         },
 203         [netmos_9xx5_combo] = {
 204                 .flags          = FL_BASE0 | FL_BASE_BARS,
 205                 .num_ports      = 1,
 206                 .base_baud      = 115200,
 207                 .uart_offset    = 8,
 208         },
 209         [netmos_9855] = {
 210                 .flags          = FL_BASE2 | FL_BASE_BARS,
 211                 .num_ports      = 1,
 212                 .base_baud      = 115200,
 213                 .uart_offset    = 8,
 214         },
 215         [netmos_9855_2p] = {
 216                 .flags          = FL_BASE4 | FL_BASE_BARS,
 217                 .num_ports      = 1,
 218                 .base_baud      = 115200,
 219                 .uart_offset    = 8,
 220         },
 221         [avlab_1s1p] = { /* n/t */
 222                 .flags          = FL_BASE0 | FL_BASE_BARS,
 223                 .num_ports      = 1,
 224                 .base_baud      = 115200,
 225                 .uart_offset    = 8,
 226         },
 227         [avlab_1s2p] = { /* n/t */
 228                 .flags          = FL_BASE0 | FL_BASE_BARS,
 229                 .num_ports      = 1,
 230                 .base_baud      = 115200,
 231                 .uart_offset    = 8,
 232         },
 233         [avlab_2s1p] = { /* n/t */
 234                 .flags          = FL_BASE0 | FL_BASE_BARS,
 235                 .num_ports      = 2,
 236                 .base_baud      = 115200,
 237                 .uart_offset    = 8,
 238         },
 239         [siig_1s1p_10x] = {
 240                 .flags          = FL_BASE2,
 241                 .num_ports      = 1,
 242                 .base_baud      = 460800,
 243                 .uart_offset    = 8,
 244         },
 245         [siig_2s1p_10x] = {
 246                 .flags          = FL_BASE2,
 247                 .num_ports      = 1,
 248                 .base_baud      = 921600,
 249                 .uart_offset    = 8,
 250         },
 251         [siig_2p1s_20x] = {
 252                 .flags          = FL_BASE0,
 253                 .num_ports      = 1,
 254                 .base_baud      = 921600,
 255                 .uart_offset    = 8,
 256         },
 257         [siig_1s1p_20x] = {
 258                 .flags          = FL_BASE0,
 259                 .num_ports      = 1,
 260                 .base_baud      = 921600,
 261                 .uart_offset    = 8,
 262         },
 263         [siig_2s1p_20x] = {
 264                 .flags          = FL_BASE0,
 265                 .num_ports      = 1,
 266                 .base_baud      = 921600,
 267                 .uart_offset    = 8,
 268         },
 269 };
 270
 271 struct parport_serial_private {
 272         struct serial_private   *serial;
 273         int num_par;
 274         struct parport *port[PARPORT_MAX];
 275         struct parport_pc_pci par;
 276 };
 277
 278 /* Register the serial port(s) of a PCI card. */
 279 static int __devinit serial_register (struct pci_dev *dev,
 280                                       const struct pci_device_id *id)
 281 {
 282         struct parport_serial_private *priv = pci_get_drvdata (dev);
 283         struct pciserial_board *board;
 284         struct serial_private *serial;
 285
 286         board = &pci_parport_serial_boards[id->driver_data];
 287         serial = pciserial_init_ports(dev, board);
 288
 289         if (IS_ERR(serial))
 290                 return PTR_ERR(serial);
 291
 292         priv->serial = serial;
 293         return 0;
 294 }
 295
 296 /* Register the parallel port(s) of a PCI card. */
 297 static int __devinit parport_register (struct pci_dev *dev,
 298                                        const struct pci_device_id *id)
 299 {
 300         struct parport_pc_pci *card;
 301         struct parport_serial_private *priv = pci_get_drvdata (dev);
 302         int n, success = 0;
 303
 304         priv->par = cards[id->driver_data];
 305         card = &priv->par;
 306         if (card->preinit_hook &&
 307             card->preinit_hook (dev, card, PARPORT_IRQ_NONE, PARPORT_DMA_NONE))
 308                 return -ENODEV;
 309
 310         for (n = 0; n < card->numports; n++) {
 311                 struct parport *port;
 312                 int lo = card->addr[n].lo;
 313                 int hi = card->addr[n].hi;
 314                 unsigned long io_lo, io_hi;
 315                 int irq;
 316
 317                 if (priv->num_par == ARRAY_SIZE (priv->port)) {
 318                         printk (KERN_WARNING
 319                                 "parport_serial: %s: only %zu parallel ports "
 320                                 "supported (%d reported)\n", pci_name (dev),
 321                                 ARRAY_SIZE(priv->port), card->numports);
 322                         break;
 323                 }
 324
 325                 io_lo = pci_resource_start (dev, lo);
 326                 io_hi = 0;
 327                 if ((hi >= 0) && (hi <= 6))
 328                         io_hi = pci_resource_start (dev, hi);
 329                 else if (hi > 6)
 330                         io_lo += hi; /* Reinterpret the meaning of
 331                                         "hi" as an offset (see SYBA
 332                                         def.) */
 333                 /* TODO: test if sharing interrupts works */
 334                 irq = dev->irq;
 335                 if (irq == IRQ_NONE) {
 336                         dev_dbg(&dev->dev,
 337                         "PCI parallel port detected: I/O at %#lx(%#lx)\n",
 338                                 io_lo, io_hi);
 339                         irq = PARPORT_IRQ_NONE;
 340                 } else {
 341                         dev_dbg(&dev->dev,
 342                 "PCI parallel port detected: I/O at %#lx(%#lx), IRQ %d\n",
 343                                 io_lo, io_hi, irq);
 344                         irq = PARPORT_IRQ_NONE;
 345                 }
 346                 port = parport_pc_probe_port (io_lo, io_hi, irq,
 347                               PARPORT_DMA_NONE, &dev->dev, IRQF_SHARED);
 348                 if (port) {
 349                         priv->port[priv->num_par++] = port;
 350                         success = 1;
 351                 }
 352         }
 353
 354         if (card->postinit_hook)
 355                 card->postinit_hook (dev, card, !success);
 356
 357         return 0;
 358 }
 359
 360 static int __devinit parport_serial_pci_probe (struct pci_dev *dev,
 361                                                const struct pci_device_id *id)
 362 {
 363         struct parport_serial_private *priv;
 364         int err;
 365
 366         priv = kzalloc (sizeof *priv, GFP_KERNEL);
 367         if (!priv)
 368                 return -ENOMEM;
 369         pci_set_drvdata (dev, priv);
 370
 371         err = pci_enable_device (dev);
 372         if (err) {
 373                 pci_set_drvdata (dev, NULL);
 374                 kfree (priv);
 375                 return err;
 376         }
 377
 378         if (parport_register (dev, id)) {
 379                 pci_set_drvdata (dev, NULL);
 380                 kfree (priv);
 381                 return -ENODEV;
 382         }
 383
 384         if (serial_register (dev, id)) {
 385                 int i;
 386                 for (i = 0; i < priv->num_par; i++)
 387                         parport_pc_unregister_port (priv->port[i]);
 388                 pci_set_drvdata (dev, NULL);
 389                 kfree (priv);
 390                 return -ENODEV;
 391         }
 392
 393         return 0;
 394 }
 395
 396 static void __devexit parport_serial_pci_remove (struct pci_dev *dev)
 397 {
 398         struct parport_serial_private *priv = pci_get_drvdata (dev);
 399         int i;
 400
 401         pci_set_drvdata(dev, NULL);
 402
 403         // Serial ports
 404         if (priv->serial)
 405                 pciserial_remove_ports(priv->serial);
 406
 407         // Parallel ports
 408         for (i = 0; i < priv->num_par; i++)
 409                 parport_pc_unregister_port (priv->port[i]);
 410
 411         kfree (priv);
 412         return;
 413 }
 414
 415 #ifdef CONFIG_PM
 416 static int parport_serial_pci_suspend(struct pci_dev *dev, pm_message_t state)
 417 {
 418         struct parport_serial_private *priv = pci_get_drvdata(dev);
 419
 420         if (priv->serial)
 421                 pciserial_suspend_ports(priv->serial);
 422
 423         /* FIXME: What about parport? */
 424
 425         pci_save_state(dev);
 426         pci_set_power_state(dev, pci_choose_state(dev, state));
 427         return 0;
 428 }
 429
 430 static int parport_serial_pci_resume(struct pci_dev *dev)
 431 {
 432         struct parport_serial_private *priv = pci_get_drvdata(dev);
 433         int err;
 434
 435         pci_set_power_state(dev, PCI_D0);
 436         pci_restore_state(dev);
 437
 438         /*
 439          * The device may have been disabled.  Re-enable it.
 440          */
 441         err = pci_enable_device(dev);
 442         if (err) {
 443                 printk(KERN_ERR "parport_serial: %s: error enabling "
 444                         "device for resume (%d)\n", pci_name(dev), err);
 445                 return err;
 446         }
 447
 448         if (priv->serial)
 449                 pciserial_resume_ports(priv->serial);
 450
 451         /* FIXME: What about parport? */
 452
 453         return 0;
 454 }
 455 #endif
 456
 457 static struct pci_driver parport_serial_pci_driver = {
 458         .name           = "parport_serial",
 459         .id_table       = parport_serial_pci_tbl,
 460         .probe          = parport_serial_pci_probe,
 461         .remove         = __devexit_p(parport_serial_pci_remove),
 462 #ifdef CONFIG_PM
 463         .suspend        = parport_serial_pci_suspend,
 464         .resume         = parport_serial_pci_resume,
 465 #endif
 466 };
 467
 468
 469 static int __init parport_serial_init (void)
 470 {
 471         return pci_register_driver (&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);