drivers/char/ip2/ip2.h

   1 /*******************************************************************************
   2 *
   3 *   (c) 1998 by Computone Corporation
   4 *
   5 ********************************************************************************
   6 *
   7 *
   8 *   PACKAGE:     Linux tty Device Driver for IntelliPort II family of multiport
   9 *                serial I/O controllers.
  10 *
  11 *   DESCRIPTION: Driver constants for configuration and tuning
  12 *
  13 *   NOTES:
  14 *
  15 *******************************************************************************/
  16 #ifndef IP2_H
  17 #define IP2_H
  18
  19 #include "ip2types.h"
  20 #include "i2cmd.h"
  21
  22 /*************/
  23 /* Constants */
  24 /*************/
  25
  26 /* Device major numbers - since version 2.0.26. */
  27 #define IP2_TTY_MAJOR      71
  28 #define IP2_CALLOUT_MAJOR  72
  29 #define IP2_IPL_MAJOR      73
  30
  31 /* Board configuration array.
  32  * This array defines the hardware irq and address for up to IP2_MAX_BOARDS
  33  * (4 supported per ip2_types.h) ISA board addresses and irqs MUST be specified,
  34  * PCI and EISA boards are probed for and automagicly configed
  35  * iff the addresses are set to 1 and 2 respectivily.
  36  *    0x0100 - 0x03f0 == ISA
  37  *               1        == PCI
  38  *               2        == EISA
  39  *               0        == (skip this board)
  40  * This array defines the hardware addresses for them. Special
  41  * addresses are EISA and PCI which go sniffing for boards.
  42
  43  * In a multiboard system the position in the array determines which port
  44  * devices are assigned to each board:
  45  *              board 0 is assigned ttyF0.. to ttyF63,
  46  *              board 1 is assigned ttyF64  to ttyF127,
  47  *              board 2 is assigned ttyF128 to ttyF191,
  48  *              board 3 is assigned ttyF192 to ttyF255.
  49  *
  50  * In PCI and EISA bus systems each range is mapped to card in
  51  * monotonically increasing slot number order, ISA position is as specified
  52  * here.
  53
  54  * If the irqs are ALL set to 0,0,0,0 all boards operate in
  55  * polled mode. For interrupt operation ISA boards require that the IRQ be
  56  * specified, while PCI and EISA boards any nonzero entry
  57  * will enable interrupts using the BIOS configured irq for the board.
  58  * An invalid irq entry will default to polled mode for that card and print
  59  * console warning.
  60
  61  * When the driver is loaded as a module these setting can be overridden on the
  62  * modprobe command line or on an option line in /etc/modprobe.conf.
  63  * If the driver is built-in the configuration must be
  64  * set here for ISA cards and address set to 1 and 2 for PCI and EISA.
  65  *
  66  * Here is an example that shows most if not all possibe combinations:
  67
  68  *static ip2config_t ip2config =
  69  *{
  70  *      {11,1,0,0},             // irqs
  71  *      {                               // Addresses
  72  *              0x0308,         // Board 0, ttyF0   - ttyF63// ISA card at io=0x308, irq=11
  73  *              0x0001,         // Board 1, ttyF64  - ttyF127//PCI card configured by BIOS
  74  *              0x0000,         // Board 2, ttyF128 - ttyF191// Slot skipped
  75  *              0x0002          // Board 3, ttyF192 - ttyF255//EISA card configured by BIOS
  76  *                                                                                               // but polled not irq driven
  77  *      }
  78  *};
  79  */
  80
  81  /* this structure is zeroed out because the suggested method is to configure
  82   * the driver as a module, set up the parameters with an options line in
  83   * /etc/modprobe.conf and load with modprobe or kmod, the kernel
  84   * module loader
  85   */
  86
  87  /* This structure is NOW always initialized when the driver is initialized.
  88   * Compiled in defaults MUST be added to the io and irq arrays in
  89   * ip2.c.  Those values are configurable from insmod parameters in the
  90   * case of modules or from command line parameters (ip2=io,irq) when
  91   * compiled in.
  92   */
  93
  94 static ip2config_t ip2config =
  95 {
  96         {0,0,0,0},              // irqs
  97         {                               // Addresses
  98         /* Do NOT set compile time defaults HERE!  Use the arrays in
  99                 ip2.c!  These WILL be overwritten!  =mhw= */
 100                 0x0000,         // Board 0, ttyF0   - ttyF63
 101                 0x0000,         // Board 1, ttyF64  - ttyF127
 102                 0x0000,         // Board 2, ttyF128 - ttyF191
 103                 0x0000          // Board 3, ttyF192 - ttyF255
 104         }
 105 };
 106
 107 #endif