LXR linux/drivers/char/ip2.c

   1// ip2.c
   2// This is a dummy module to make the firmware available when needed
   3// and allows it to be unloaded when not. Rumor is the __initdata 
   4// macro doesn't always works on all platforms so we use this kludge.
   5// If not compiled as a module it just makes fip_firm avaliable then
   6//  __initdata should work as advertized
   7//
   8
   9#include <linux/module.h>
  10#include <linux/version.h>
  11#include <linux/init.h>
  12#include <linux/wait.h>
  13
  14#ifndef __init
  15#define __init
  16#endif
  17#ifndef __initfunc
  18#define __initfunc(a) a
  19#endif
  20#ifndef __initdata
  21#define __initdata
  22#endif
  23
  24#include "./ip2/ip2types.h"             
  25#include "./ip2/fip_firm.h"             // the meat
  26
  27int
  28ip2_loadmain(int *, int  *, unsigned char *, int ); // ref into ip2main.c
  29
  30/* Note: Add compiled in defaults to these arrays, not to the structure
  31        in ip2/ip2.h any longer.  That structure WILL get overridden
  32        by these values, or command line values, or insmod values!!!  =mhw=
  33*/
  34static int io[IP2_MAX_BOARDS]= { 0, 0, 0, 0 };
  35static int irq[IP2_MAX_BOARDS] = { -1, -1, -1, -1 }; 
  36
  37static int poll_only = 0;
  38
  39MODULE_AUTHOR("Doug McNash");
  40MODULE_DESCRIPTION("Computone IntelliPort Plus Driver");
  41module_param_array(irq, int, NULL, 0);
  42MODULE_PARM_DESC(irq,"Interrupts for IntelliPort Cards");
  43module_param_array(io, int, NULL, 0);
  44MODULE_PARM_DESC(io,"I/O ports for IntelliPort Cards");
  45module_param(poll_only, bool, 0);
  46MODULE_PARM_DESC(poll_only,"Do not use card interrupts");
  47
  48
  49static int __init ip2_init(void)
  50{
  51        if( poll_only ) {
  52                /* Hard lock the interrupts to zero */
  53                irq[0] = irq[1] = irq[2] = irq[3] = 0;
  54        }
  55
  56        return ip2_loadmain(io,irq,(unsigned char *)fip_firm,sizeof(fip_firm));
  57}
  58module_init(ip2_init);
  59
  60MODULE_LICENSE("GPL");
  61
  62#ifndef MODULE
  63/******************************************************************************
  64 *      ip2_setup:
  65 *              str: kernel command line string
  66 *
  67 *      Can't autoprobe the boards so user must specify configuration on
  68 *      kernel command line.  Sane people build it modular but the others
  69 *      come here.
  70 *
  71 *      Alternating pairs of io,irq for up to 4 boards.
  72 *              ip2=io0,irq0,io1,irq1,io2,irq2,io3,irq3
  73 *
  74 *              io=0 => No board
  75 *              io=1 => PCI
  76 *              io=2 => EISA
  77 *              else => ISA I/O address
  78 *
  79 *              irq=0 or invalid for ISA will revert to polling mode
  80 *
  81 *              Any value = -1, do not overwrite compiled in value.
  82 *
  83 ******************************************************************************/
  84static int __init ip2_setup(char *str)
  85{
  86        int     ints[10];       /* 4 boards, 2 parameters + 2 */
  87        int     i, j;
  88
  89        str = get_options (str, ARRAY_SIZE(ints), ints);
  90
  91        for( i = 0, j = 1; i < 4; i++ ) {
  92                if( j > ints[0] ) {
  93                        break;
  94                }
  95                if( ints[j] >= 0 ) {
  96                        io[i] = ints[j];
  97                }
  98                j++;
  99                if( j > ints[0] ) {
 100                        break;
 101                }
 102                if( ints[j] >= 0 ) {
 103                        irq[i] = ints[j];
 104                }
 105                j++;
 106        }
 107        return 1;
 108}
 109__setup("ip2=", ip2_setup);
 110#endif /* !MODULE */
 111