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/config.h>
  10 #include <linux/module.h>
  11 #include <linux/version.h>
  12 #include <linux/init.h>
  13 #include <linux/wait.h>
  14
  15 #ifndef __init
  16 #define __init
  17 #endif
  18 #ifndef __initfunc
  19 #define __initfunc(a) a
  20 #endif
  21 #ifndef __initdata
  22 #define __initdata
  23 #endif
  24
  25 #include "./ip2/ip2types.h"
  26 #include "./ip2/fip_firm.h"             // the meat
  27
  28 int
  29 ip2_loadmain(int *, int  *, unsigned char *, int ); // ref into ip2main.c
  30
  31 #ifdef MODULE
  32 #if defined(CONFIG_MODVERSIONS) && !defined(MODVERSIONS)
  33 #       define MODVERSIONS
  34 #endif
  35 #ifdef MODVERSIONS
  36 #       include <linux/modversions.h>
  37 #endif
  38
  39 static int io[IP2_MAX_BOARDS]= { 0,};
  40 static int irq[IP2_MAX_BOARDS] = { 0,};
  41
  42 #       if LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,0)
  43                 MODULE_AUTHOR("Doug McNash");
  44                 MODULE_DESCRIPTION("Computone IntelliPort Plus Driver");
  45                 MODULE_PARM(irq,"1-"__MODULE_STRING(IP2_MAX_BOARDS) "i");
  46                 MODULE_PARM_DESC(irq,"Interrupts for IntelliPort Cards");
  47                 MODULE_PARM(io,"1-"__MODULE_STRING(IP2_MAX_BOARDS) "i");
  48                 MODULE_PARM_DESC(io,"I/O ports for IntelliPort Cards");
  49 #       endif   /* LINUX_VERSION */
  50
  51
  52 //======================================================================
  53 int
  54 init_module(void)
  55 {
  56         int rc;
  57
  58         MOD_INC_USE_COUNT;      // hold till done
  59
  60         rc = ip2_loadmain(io,irq,(unsigned char *)fip_firm,sizeof(fip_firm));
  61         // The call to lock and load main, create dep
  62
  63         MOD_DEC_USE_COUNT;      //done - kerneld now can unload us
  64         return rc;
  65 }
  66
  67 //======================================================================
  68 int
  69 ip2_init(void)
  70 {
  71         // call to this is int tty_io.c so we need this
  72         return 0;
  73 }
  74
  75 //======================================================================
  76 void
  77 cleanup_module(void)
  78 {
  79 }
  80
  81 #else   // !MODULE
  82
  83 #ifndef NULL
  84 # define NULL           ((void *) 0)
  85 #endif
  86
  87 int
  88 ip2_init(void) {
  89         return ip2_loadmain(NULL,NULL,(unsigned char *)fip_firm,sizeof(fip_firm));
  90 }
  91
  92 #endif /* !MODULE */