diff options
Diffstat (limited to 'drivers/char/ip2/ip2base.c')
-rw-r--r-- | drivers/char/ip2/ip2base.c | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/drivers/char/ip2/ip2base.c b/drivers/char/ip2/ip2base.c new file mode 100644 index 000000000000..435ccfc74958 --- /dev/null +++ b/drivers/char/ip2/ip2base.c | |||
@@ -0,0 +1,109 @@ | |||
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/init.h> | ||
11 | #include <linux/wait.h> | ||
12 | |||
13 | #ifndef __init | ||
14 | #define __init | ||
15 | #endif | ||
16 | #ifndef __initfunc | ||
17 | #define __initfunc(a) a | ||
18 | #endif | ||
19 | #ifndef __initdata | ||
20 | #define __initdata | ||
21 | #endif | ||
22 | |||
23 | #include "ip2types.h" | ||
24 | #include "fip_firm.h" // the meat | ||
25 | |||
26 | int | ||
27 | ip2_loadmain(int *, int *, unsigned char *, int ); // ref into ip2main.c | ||
28 | |||
29 | /* Note: Add compiled in defaults to these arrays, not to the structure | ||
30 | in ip2.h any longer. That structure WILL get overridden | ||
31 | by these values, or command line values, or insmod values!!! =mhw= | ||
32 | */ | ||
33 | static int io[IP2_MAX_BOARDS]= { 0, 0, 0, 0 }; | ||
34 | static int irq[IP2_MAX_BOARDS] = { -1, -1, -1, -1 }; | ||
35 | |||
36 | static int poll_only = 0; | ||
37 | |||
38 | MODULE_AUTHOR("Doug McNash"); | ||
39 | MODULE_DESCRIPTION("Computone IntelliPort Plus Driver"); | ||
40 | module_param_array(irq, int, NULL, 0); | ||
41 | MODULE_PARM_DESC(irq,"Interrupts for IntelliPort Cards"); | ||
42 | module_param_array(io, int, NULL, 0); | ||
43 | MODULE_PARM_DESC(io,"I/O ports for IntelliPort Cards"); | ||
44 | module_param(poll_only, bool, 0); | ||
45 | MODULE_PARM_DESC(poll_only,"Do not use card interrupts"); | ||
46 | |||
47 | |||
48 | static int __init ip2_init(void) | ||
49 | { | ||
50 | if( poll_only ) { | ||
51 | /* Hard lock the interrupts to zero */ | ||
52 | irq[0] = irq[1] = irq[2] = irq[3] = 0; | ||
53 | } | ||
54 | |||
55 | return ip2_loadmain(io,irq,(unsigned char *)fip_firm,sizeof(fip_firm)); | ||
56 | } | ||
57 | module_init(ip2_init); | ||
58 | |||
59 | MODULE_LICENSE("GPL"); | ||
60 | |||
61 | #ifndef MODULE | ||
62 | /****************************************************************************** | ||
63 | * ip2_setup: | ||
64 | * str: kernel command line string | ||
65 | * | ||
66 | * Can't autoprobe the boards so user must specify configuration on | ||
67 | * kernel command line. Sane people build it modular but the others | ||
68 | * come here. | ||
69 | * | ||
70 | * Alternating pairs of io,irq for up to 4 boards. | ||
71 | * ip2=io0,irq0,io1,irq1,io2,irq2,io3,irq3 | ||
72 | * | ||
73 | * io=0 => No board | ||
74 | * io=1 => PCI | ||
75 | * io=2 => EISA | ||
76 | * else => ISA I/O address | ||
77 | * | ||
78 | * irq=0 or invalid for ISA will revert to polling mode | ||
79 | * | ||
80 | * Any value = -1, do not overwrite compiled in value. | ||
81 | * | ||
82 | ******************************************************************************/ | ||
83 | static int __init ip2_setup(char *str) | ||
84 | { | ||
85 | int ints[10]; /* 4 boards, 2 parameters + 2 */ | ||
86 | int i, j; | ||
87 | |||
88 | str = get_options (str, ARRAY_SIZE(ints), ints); | ||
89 | |||
90 | for( i = 0, j = 1; i < 4; i++ ) { | ||
91 | if( j > ints[0] ) { | ||
92 | break; | ||
93 | } | ||
94 | if( ints[j] >= 0 ) { | ||
95 | io[i] = ints[j]; | ||
96 | } | ||
97 | j++; | ||
98 | if( j > ints[0] ) { | ||
99 | break; | ||
100 | } | ||
101 | if( ints[j] >= 0 ) { | ||
102 | irq[i] = ints[j]; | ||
103 | } | ||
104 | j++; | ||
105 | } | ||
106 | return 1; | ||
107 | } | ||
108 | __setup("ip2=", ip2_setup); | ||
109 | #endif /* !MODULE */ | ||