diff options
Diffstat (limited to 'drivers/char/ip2.c')
-rw-r--r-- | drivers/char/ip2.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/drivers/char/ip2.c b/drivers/char/ip2.c new file mode 100644 index 00000000000..6cd12f23aa5 --- /dev/null +++ b/drivers/char/ip2.c @@ -0,0 +1,110 @@ +// ip2.c +// This is a dummy module to make the firmware available when needed +// and allows it to be unloaded when not. Rumor is the __initdata +// macro doesn't always works on all platforms so we use this kludge. +// If not compiled as a module it just makes fip_firm avaliable then +// __initdata should work as advertized +// + +#include <linux/module.h> +#include <linux/version.h> +#include <linux/init.h> +#include <linux/wait.h> + +#ifndef __init +#define __init +#endif +#ifndef __initfunc +#define __initfunc(a) a +#endif +#ifndef __initdata +#define __initdata +#endif + +#include "./ip2/ip2types.h" +#include "./ip2/fip_firm.h" // the meat + +int +ip2_loadmain(int *, int *, unsigned char *, int ); // ref into ip2main.c + +/* Note: Add compiled in defaults to these arrays, not to the structure + in ip2/ip2.h any longer. That structure WILL get overridden + by these values, or command line values, or insmod values!!! =mhw= +*/ +static int io[IP2_MAX_BOARDS]= { 0, 0, 0, 0 }; +static int irq[IP2_MAX_BOARDS] = { -1, -1, -1, -1 }; + +static int poll_only = 0; + +MODULE_AUTHOR("Doug McNash"); +MODULE_DESCRIPTION("Computone IntelliPort Plus Driver"); +module_param_array(irq, int, NULL, 0); +MODULE_PARM_DESC(irq,"Interrupts for IntelliPort Cards"); +module_param_array(io, int, NULL, 0); +MODULE_PARM_DESC(io,"I/O ports for IntelliPort Cards"); +module_param(poll_only, bool, 0); +MODULE_PARM_DESC(poll_only,"Do not use card interrupts"); + + +static int __init ip2_init(void) +{ + if( poll_only ) { + /* Hard lock the interrupts to zero */ + irq[0] = irq[1] = irq[2] = irq[3] = 0; + } + + return ip2_loadmain(io,irq,(unsigned char *)fip_firm,sizeof(fip_firm)); +} +module_init(ip2_init); + +MODULE_LICENSE("GPL"); + +#ifndef MODULE +/****************************************************************************** + * ip2_setup: + * str: kernel command line string + * + * Can't autoprobe the boards so user must specify configuration on + * kernel command line. Sane people build it modular but the others + * come here. + * + * Alternating pairs of io,irq for up to 4 boards. + * ip2=io0,irq0,io1,irq1,io2,irq2,io3,irq3 + * + * io=0 => No board + * io=1 => PCI + * io=2 => EISA + * else => ISA I/O address + * + * irq=0 or invalid for ISA will revert to polling mode + * + * Any value = -1, do not overwrite compiled in value. + * + ******************************************************************************/ +static int __init ip2_setup(char *str) +{ + int ints[10]; /* 4 boards, 2 parameters + 2 */ + int i, j; + + str = get_options (str, ARRAY_SIZE(ints), ints); + + for( i = 0, j = 1; i < 4; i++ ) { + if( j > ints[0] ) { + break; + } + if( ints[j] >= 0 ) { + io[i] = ints[j]; + } + j++; + if( j > ints[0] ) { + break; + } + if( ints[j] >= 0 ) { + irq[i] = ints[j]; + } + j++; + } + return 1; +} +__setup("ip2=", ip2_setup); +#endif /* !MODULE */ |