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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [drivers/] [block/] [paride/] [ktti.c] - Blame information for rev 1777

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/*
        ktti.c        (c) 1998  Grant R. Guenther <grant@torque.net>
                          Under the terms of the GNU public license.
 
        ktti.c is a low-level protocol driver for the KT Technology
        parallel port adapter.  This adapter is used in the "PHd"
        portable hard-drives.  As far as I can tell, this device
        supports 4-bit mode _only_.
 
*/
 
#define KTTI_VERSION      "1.0"
 
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <asm/io.h>
 
#include "paride.h"
 
#define j44(a,b)                (((a>>4)&0x0f)|(b&0xf0))
 
/* cont = 0 - access the IDE register file
   cont = 1 - access the IDE command set
*/
 
static int  cont_map[2] = { 0x10, 0x08 };
 
static void  ktti_write_regr( PIA *pi, int cont, int regr, int val)
 
{       int r;
 
        r = regr + cont_map[cont];
 
        w0(r); w2(0xb); w2(0xa); w2(3); w2(6);
        w0(val); w2(3); w0(0); w2(6); w2(0xb);
}
 
static int ktti_read_regr( PIA *pi, int cont, int regr )
 
{       int  a, b, r;
 
        r = regr + cont_map[cont];
 
        w0(r); w2(0xb); w2(0xa); w2(9); w2(0xc); w2(9);
        a = r1(); w2(0xc);  b = r1(); w2(9); w2(0xc); w2(9);
        return j44(a,b);
 
}
 
static void ktti_read_block( PIA *pi, char * buf, int count )
 
{       int  k, a, b;
 
        for (k=0;k<count/2;k++) {
                w0(0x10); w2(0xb); w2(0xa); w2(9); w2(0xc); w2(9);
                a = r1(); w2(0xc); b = r1(); w2(9);
                buf[2*k] = j44(a,b);
                a = r1(); w2(0xc); b = r1(); w2(9);
                buf[2*k+1] = j44(a,b);
        }
}
 
static void ktti_write_block( PIA *pi, char * buf, int count )
 
{       int k;
 
        for (k=0;k<count/2;k++) {
                w0(0x10); w2(0xb); w2(0xa); w2(3); w2(6);
                w0(buf[2*k]); w2(3);
                w0(buf[2*k+1]); w2(6);
                w2(0xb);
        }
}
 
static void ktti_connect ( PIA *pi  )
 
{       pi->saved_r0 = r0();
        pi->saved_r2 = r2();
        w2(0xb); w2(0xa); w0(0); w2(3); w2(6);
}
 
static void ktti_disconnect ( PIA *pi )
 
{       w2(0xb); w2(0xa); w0(0xa0); w2(3); w2(4);
        w0(pi->saved_r0);
        w2(pi->saved_r2);
}
 
static void ktti_log_adapter( PIA *pi, char * scratch, int verbose )
 
{       printk("%s: ktti %s, KT adapter at 0x%x, delay %d\n",
                pi->device,KTTI_VERSION,pi->port,pi->delay);
 
}
 
static void ktti_init_proto( PIA *pi)
 
{       MOD_INC_USE_COUNT;
}
 
static void ktti_release_proto( PIA *pi)
 
{       MOD_DEC_USE_COUNT;
}
 
struct pi_protocol ktti = {"ktti",0,1,2,1,1,
                           ktti_write_regr,
                           ktti_read_regr,
                           ktti_write_block,
                           ktti_read_block,
                           ktti_connect,
                           ktti_disconnect,
                           0,
                           0,
                           0,
                           ktti_log_adapter,
                           ktti_init_proto,
                           ktti_release_proto
                          };
 
 
#ifdef MODULE
 
int     init_module(void)
 
{       return pi_register( &ktti ) - 1;
}
 
void    cleanup_module(void)
 
{       pi_unregister( &ktti );
}
 
#endif
 
/* end of ktti.c */

Line No.	Rev	Author	Line
1	1626	jcastillo	`/*`
2			`ktti.c (c) 1998 Grant R. Guenther <grant@torque.net>`
3			`Under the terms of the GNU public license.`
4
5			`ktti.c is a low-level protocol driver for the KT Technology`
6			`parallel port adapter. This adapter is used in the "PHd"`
7			`portable hard-drives. As far as I can tell, this device`
8			`supports 4-bit mode _only_.`
9
10			`*/`
11
12			`#define KTTI_VERSION "1.0"`
13
14			`#include <linux/module.h>`
15			`#include <linux/delay.h>`
16			`#include <linux/kernel.h>`
17			`#include <linux/types.h>`
18			`#include <asm/io.h>`
19
20			`#include "paride.h"`
21
22			`#define j44(a,b) (((a>>4)&0x0f)\|(b&0xf0))`
23
24			`/* cont = 0 - access the IDE register file`
25			`cont = 1 - access the IDE command set`
26			`*/`
27
28			`static int cont_map[2] = { 0x10, 0x08 };`
29
30			`static void ktti_write_regr( PIA *pi, int cont, int regr, int val)`
31
32			`{ int r;`
33
34			`r = regr + cont_map[cont];`
35
36			`w0(r); w2(0xb); w2(0xa); w2(3); w2(6);`
37			`w0(val); w2(3); w0(0); w2(6); w2(0xb);`
38			`}`
39
40			`static int ktti_read_regr( PIA *pi, int cont, int regr )`
41
42			`{ int a, b, r;`
43
44			`r = regr + cont_map[cont];`
45
46			`w0(r); w2(0xb); w2(0xa); w2(9); w2(0xc); w2(9);`
47			`a = r1(); w2(0xc); b = r1(); w2(9); w2(0xc); w2(9);`
48			`return j44(a,b);`
49
50			`}`
51
52			`static void ktti_read_block( PIA pi, char buf, int count )`
53
54			`{ int k, a, b;`
55
56			`for (k=0;k<count/2;k++) {`
57			`w0(0x10); w2(0xb); w2(0xa); w2(9); w2(0xc); w2(9);`
58			`a = r1(); w2(0xc); b = r1(); w2(9);`
59			`buf[2*k] = j44(a,b);`
60			`a = r1(); w2(0xc); b = r1(); w2(9);`
61			`buf[2*k+1] = j44(a,b);`
62			`}`
63			`}`
64
65			`static void ktti_write_block( PIA pi, char buf, int count )`
66
67			`{ int k;`
68
69			`for (k=0;k<count/2;k++) {`
70			`w0(0x10); w2(0xb); w2(0xa); w2(3); w2(6);`
71			`w0(buf[2*k]); w2(3);`
72			`w0(buf[2*k+1]); w2(6);`
73			`w2(0xb);`
74			`}`
75			`}`
76
77			`static void ktti_connect ( PIA *pi )`
78
79			`{ pi->saved_r0 = r0();`
80			`pi->saved_r2 = r2();`
81			`w2(0xb); w2(0xa); w0(0); w2(3); w2(6);`
82			`}`
83
84			`static void ktti_disconnect ( PIA *pi )`
85
86			`{ w2(0xb); w2(0xa); w0(0xa0); w2(3); w2(4);`
87			`w0(pi->saved_r0);`
88			`w2(pi->saved_r2);`
89			`}`
90
91			`static void ktti_log_adapter( PIA pi, char scratch, int verbose )`
92
93			`{ printk("%s: ktti %s, KT adapter at 0x%x, delay %d\n",`
94			`pi->device,KTTI_VERSION,pi->port,pi->delay);`
95
96			`}`
97
98			`static void ktti_init_proto( PIA *pi)`
99
100			`{ MOD_INC_USE_COUNT;`
101			`}`
102
103			`static void ktti_release_proto( PIA *pi)`
104
105			`{ MOD_DEC_USE_COUNT;`
106			`}`
107
108			`struct pi_protocol ktti = {"ktti",0,1,2,1,1,`
109			`ktti_write_regr,`
110			`ktti_read_regr,`
111			`ktti_write_block,`
112			`ktti_read_block,`
113			`ktti_connect,`
114			`ktti_disconnect,`
115			`0,`
116			`0,`
117			`0,`
118			`ktti_log_adapter,`
119			`ktti_init_proto,`
120			`ktti_release_proto`
121			`};`
122
123
124			`#ifdef MODULE`
125
126			`int init_module(void)`
127
128			`{ return pi_register( &ktti ) - 1;`
129			`}`
130
131			`void cleanup_module(void)`
132
133			`{ pi_unregister( &ktti );`
134			`}`
135
136			`#endif`
137
138			`/* end of ktti.c */`

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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [drivers/] [block/] [paride/] [ktti.c] - Blame information for rev 1777