mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-24 09:50:04 +00:00
![Alexey Dobriyan](/assets/img/avatar_default.png)
paride_register() returns 1 on success, 0 on failure and module init code looks like static int __init foo_init(void) { return paride_register(&foo) - 1; } which is not what one get used to. Converted to usual 0/-E convention. In case of kbic driver, unwind registration. It was just return (paride_register(&k951)||paride_register(&k971))-1; Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
233 lines
5 KiB
C
233 lines
5 KiB
C
/*
|
|
dstr.c (c) 1997-8 Grant R. Guenther <grant@torque.net>
|
|
Under the terms of the GNU General Public License.
|
|
|
|
dstr.c is a low-level protocol driver for the
|
|
DataStor EP2000 parallel to IDE adapter chip.
|
|
|
|
*/
|
|
|
|
/* Changes:
|
|
|
|
1.01 GRG 1998.05.06 init_proto, release_proto
|
|
|
|
*/
|
|
|
|
#define DSTR_VERSION "1.01"
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/types.h>
|
|
#include <linux/wait.h>
|
|
#include <asm/io.h>
|
|
|
|
#include "paride.h"
|
|
|
|
/* mode codes: 0 nybble reads, 8-bit writes
|
|
1 8-bit reads and writes
|
|
2 8-bit EPP mode
|
|
3 EPP-16
|
|
4 EPP-32
|
|
*/
|
|
|
|
#define j44(a,b) (((a>>3)&0x07)|((~a>>4)&0x08)|((b<<1)&0x70)|((~b)&0x80))
|
|
|
|
#define P1 w2(5);w2(0xd);w2(5);w2(4);
|
|
#define P2 w2(5);w2(7);w2(5);w2(4);
|
|
#define P3 w2(6);w2(4);w2(6);w2(4);
|
|
|
|
/* cont = 0 - access the IDE register file
|
|
cont = 1 - access the IDE command set
|
|
*/
|
|
|
|
static int cont_map[2] = { 0x20, 0x40 };
|
|
|
|
static int dstr_read_regr( PIA *pi, int cont, int regr )
|
|
|
|
{ int a, b, r;
|
|
|
|
r = regr + cont_map[cont];
|
|
|
|
w0(0x81); P1;
|
|
if (pi->mode) { w0(0x11); } else { w0(1); }
|
|
P2; w0(r); P1;
|
|
|
|
switch (pi->mode) {
|
|
|
|
case 0: w2(6); a = r1(); w2(4); w2(6); b = r1(); w2(4);
|
|
return j44(a,b);
|
|
|
|
case 1: w0(0); w2(0x26); a = r0(); w2(4);
|
|
return a;
|
|
|
|
case 2:
|
|
case 3:
|
|
case 4: w2(0x24); a = r4(); w2(4);
|
|
return a;
|
|
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
static void dstr_write_regr( PIA *pi, int cont, int regr, int val )
|
|
|
|
{ int r;
|
|
|
|
r = regr + cont_map[cont];
|
|
|
|
w0(0x81); P1;
|
|
if (pi->mode >= 2) { w0(0x11); } else { w0(1); }
|
|
P2; w0(r); P1;
|
|
|
|
switch (pi->mode) {
|
|
|
|
case 0:
|
|
case 1: w0(val); w2(5); w2(7); w2(5); w2(4);
|
|
break;
|
|
|
|
case 2:
|
|
case 3:
|
|
case 4: w4(val);
|
|
break;
|
|
}
|
|
}
|
|
|
|
#define CCP(x) w0(0xff);w2(0xc);w2(4);\
|
|
w0(0xaa);w0(0x55);w0(0);w0(0xff);w0(0x87);w0(0x78);\
|
|
w0(x);w2(5);w2(4);
|
|
|
|
static void dstr_connect ( PIA *pi )
|
|
|
|
{ pi->saved_r0 = r0();
|
|
pi->saved_r2 = r2();
|
|
w2(4); CCP(0xe0); w0(0xff);
|
|
}
|
|
|
|
static void dstr_disconnect ( PIA *pi )
|
|
|
|
{ CCP(0x30);
|
|
w0(pi->saved_r0);
|
|
w2(pi->saved_r2);
|
|
}
|
|
|
|
static void dstr_read_block( PIA *pi, char * buf, int count )
|
|
|
|
{ int k, a, b;
|
|
|
|
w0(0x81); P1;
|
|
if (pi->mode) { w0(0x19); } else { w0(9); }
|
|
P2; w0(0x82); P1; P3; w0(0x20); P1;
|
|
|
|
switch (pi->mode) {
|
|
|
|
case 0: for (k=0;k<count;k++) {
|
|
w2(6); a = r1(); w2(4);
|
|
w2(6); b = r1(); w2(4);
|
|
buf[k] = j44(a,b);
|
|
}
|
|
break;
|
|
|
|
case 1: w0(0);
|
|
for (k=0;k<count;k++) {
|
|
w2(0x26); buf[k] = r0(); w2(0x24);
|
|
}
|
|
w2(4);
|
|
break;
|
|
|
|
case 2: w2(0x24);
|
|
for (k=0;k<count;k++) buf[k] = r4();
|
|
w2(4);
|
|
break;
|
|
|
|
case 3: w2(0x24);
|
|
for (k=0;k<count/2;k++) ((u16 *)buf)[k] = r4w();
|
|
w2(4);
|
|
break;
|
|
|
|
case 4: w2(0x24);
|
|
for (k=0;k<count/4;k++) ((u32 *)buf)[k] = r4l();
|
|
w2(4);
|
|
break;
|
|
|
|
}
|
|
}
|
|
|
|
static void dstr_write_block( PIA *pi, char * buf, int count )
|
|
|
|
{ int k;
|
|
|
|
w0(0x81); P1;
|
|
if (pi->mode) { w0(0x19); } else { w0(9); }
|
|
P2; w0(0x82); P1; P3; w0(0x20); P1;
|
|
|
|
switch (pi->mode) {
|
|
|
|
case 0:
|
|
case 1: for (k=0;k<count;k++) {
|
|
w2(5); w0(buf[k]); w2(7);
|
|
}
|
|
w2(5); w2(4);
|
|
break;
|
|
|
|
case 2: w2(0xc5);
|
|
for (k=0;k<count;k++) w4(buf[k]);
|
|
w2(0xc4);
|
|
break;
|
|
|
|
case 3: w2(0xc5);
|
|
for (k=0;k<count/2;k++) w4w(((u16 *)buf)[k]);
|
|
w2(0xc4);
|
|
break;
|
|
|
|
case 4: w2(0xc5);
|
|
for (k=0;k<count/4;k++) w4l(((u32 *)buf)[k]);
|
|
w2(0xc4);
|
|
break;
|
|
|
|
}
|
|
}
|
|
|
|
|
|
static void dstr_log_adapter( PIA *pi, char * scratch, int verbose )
|
|
|
|
{ char *mode_string[5] = {"4-bit","8-bit","EPP-8",
|
|
"EPP-16","EPP-32"};
|
|
|
|
printk("%s: dstr %s, DataStor EP2000 at 0x%x, ",
|
|
pi->device,DSTR_VERSION,pi->port);
|
|
printk("mode %d (%s), delay %d\n",pi->mode,
|
|
mode_string[pi->mode],pi->delay);
|
|
|
|
}
|
|
|
|
static struct pi_protocol dstr = {
|
|
.owner = THIS_MODULE,
|
|
.name = "dstr",
|
|
.max_mode = 5,
|
|
.epp_first = 2,
|
|
.default_delay = 1,
|
|
.max_units = 1,
|
|
.write_regr = dstr_write_regr,
|
|
.read_regr = dstr_read_regr,
|
|
.write_block = dstr_write_block,
|
|
.read_block = dstr_read_block,
|
|
.connect = dstr_connect,
|
|
.disconnect = dstr_disconnect,
|
|
.log_adapter = dstr_log_adapter,
|
|
};
|
|
|
|
static int __init dstr_init(void)
|
|
{
|
|
return paride_register(&dstr);
|
|
}
|
|
|
|
static void __exit dstr_exit(void)
|
|
{
|
|
paride_unregister(&dstr);
|
|
}
|
|
|
|
MODULE_LICENSE("GPL");
|
|
module_init(dstr_init)
|
|
module_exit(dstr_exit)
|