mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-24 21:24:00 +08:00
b4178ab58a
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>
306 lines
6.8 KiB
C
306 lines
6.8 KiB
C
/*
|
|
kbic.c (c) 1997-8 Grant R. Guenther <grant@torque.net>
|
|
Under the terms of the GNU General Public License.
|
|
|
|
This is a low-level driver for the KBIC-951A and KBIC-971A
|
|
parallel to IDE adapter chips from KingByte Information Systems.
|
|
|
|
The chips are almost identical, however, the wakeup code
|
|
required for the 971A interferes with the correct operation of
|
|
the 951A, so this driver registers itself twice, once for
|
|
each chip.
|
|
|
|
*/
|
|
|
|
/* Changes:
|
|
|
|
1.01 GRG 1998.05.06 init_proto, release_proto
|
|
|
|
*/
|
|
|
|
#define KBIC_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"
|
|
|
|
#define r12w() (delay_p,inw(pi->port+1)&0xffff)
|
|
|
|
#define j44(a,b) ((((a>>4)&0x0f)|(b&0xf0))^0x88)
|
|
#define j53(w) (((w>>3)&0x1f)|((w>>4)&0xe0))
|
|
|
|
|
|
/* cont = 0 - access the IDE register file
|
|
cont = 1 - access the IDE command set
|
|
*/
|
|
|
|
static int cont_map[2] = { 0x80, 0x40 };
|
|
|
|
static int kbic_read_regr( PIA *pi, int cont, int regr )
|
|
|
|
{ int a, b, s;
|
|
|
|
s = cont_map[cont];
|
|
|
|
switch (pi->mode) {
|
|
|
|
case 0: w0(regr|0x18|s); w2(4); w2(6); w2(4); w2(1); w0(8);
|
|
a = r1(); w0(0x28); b = r1(); w2(4);
|
|
return j44(a,b);
|
|
|
|
case 1: w0(regr|0x38|s); w2(4); w2(6); w2(4); w2(5); w0(8);
|
|
a = r12w(); w2(4);
|
|
return j53(a);
|
|
|
|
case 2: w0(regr|0x08|s); w2(4); w2(6); w2(4); w2(0xa5); w2(0xa1);
|
|
a = r0(); w2(4);
|
|
return a;
|
|
|
|
case 3:
|
|
case 4:
|
|
case 5: w0(0x20|s); w2(4); w2(6); w2(4); w3(regr);
|
|
a = r4(); b = r4(); w2(4); w2(0); w2(4);
|
|
return a;
|
|
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
static void kbic_write_regr( PIA *pi, int cont, int regr, int val)
|
|
|
|
{ int s;
|
|
|
|
s = cont_map[cont];
|
|
|
|
switch (pi->mode) {
|
|
|
|
case 0:
|
|
case 1:
|
|
case 2: w0(regr|0x10|s); w2(4); w2(6); w2(4);
|
|
w0(val); w2(5); w2(4);
|
|
break;
|
|
|
|
case 3:
|
|
case 4:
|
|
case 5: w0(0x20|s); w2(4); w2(6); w2(4); w3(regr);
|
|
w4(val); w4(val);
|
|
w2(4); w2(0); w2(4);
|
|
break;
|
|
|
|
}
|
|
}
|
|
|
|
static void k951_connect ( PIA *pi )
|
|
|
|
{ pi->saved_r0 = r0();
|
|
pi->saved_r2 = r2();
|
|
w2(4);
|
|
}
|
|
|
|
static void k951_disconnect ( PIA *pi )
|
|
|
|
{ w0(pi->saved_r0);
|
|
w2(pi->saved_r2);
|
|
}
|
|
|
|
#define CCP(x) w2(0xc4);w0(0xaa);w0(0x55);w0(0);w0(0xff);w0(0x87);\
|
|
w0(0x78);w0(x);w2(0xc5);w2(0xc4);w0(0xff);
|
|
|
|
static void k971_connect ( PIA *pi )
|
|
|
|
{ pi->saved_r0 = r0();
|
|
pi->saved_r2 = r2();
|
|
CCP(0x20);
|
|
w2(4);
|
|
}
|
|
|
|
static void k971_disconnect ( PIA *pi )
|
|
|
|
{ CCP(0x30);
|
|
w0(pi->saved_r0);
|
|
w2(pi->saved_r2);
|
|
}
|
|
|
|
/* counts must be congruent to 0 MOD 4, but all known applications
|
|
have this property.
|
|
*/
|
|
|
|
static void kbic_read_block( PIA *pi, char * buf, int count )
|
|
|
|
{ int k, a, b;
|
|
|
|
switch (pi->mode) {
|
|
|
|
case 0: w0(0x98); w2(4); w2(6); w2(4);
|
|
for (k=0;k<count/2;k++) {
|
|
w2(1); w0(8); a = r1();
|
|
w0(0x28); b = r1();
|
|
buf[2*k] = j44(a,b);
|
|
w2(5); b = r1();
|
|
w0(8); a = r1();
|
|
buf[2*k+1] = j44(a,b);
|
|
w2(4);
|
|
}
|
|
break;
|
|
|
|
case 1: w0(0xb8); w2(4); w2(6); w2(4);
|
|
for (k=0;k<count/4;k++) {
|
|
w0(0xb8);
|
|
w2(4); w2(5);
|
|
w0(8); buf[4*k] = j53(r12w());
|
|
w0(0xb8); buf[4*k+1] = j53(r12w());
|
|
w2(4); w2(5);
|
|
buf[4*k+3] = j53(r12w());
|
|
w0(8); buf[4*k+2] = j53(r12w());
|
|
}
|
|
w2(4);
|
|
break;
|
|
|
|
case 2: w0(0x88); w2(4); w2(6); w2(4);
|
|
for (k=0;k<count/2;k++) {
|
|
w2(0xa0); w2(0xa1); buf[2*k] = r0();
|
|
w2(0xa5); buf[2*k+1] = r0();
|
|
}
|
|
w2(4);
|
|
break;
|
|
|
|
case 3: w0(0xa0); w2(4); w2(6); w2(4); w3(0);
|
|
for (k=0;k<count;k++) buf[k] = r4();
|
|
w2(4); w2(0); w2(4);
|
|
break;
|
|
|
|
case 4: w0(0xa0); w2(4); w2(6); w2(4); w3(0);
|
|
for (k=0;k<count/2;k++) ((u16 *)buf)[k] = r4w();
|
|
w2(4); w2(0); w2(4);
|
|
break;
|
|
|
|
case 5: w0(0xa0); w2(4); w2(6); w2(4); w3(0);
|
|
for (k=0;k<count/4;k++) ((u32 *)buf)[k] = r4l();
|
|
w2(4); w2(0); w2(4);
|
|
break;
|
|
|
|
|
|
}
|
|
}
|
|
|
|
static void kbic_write_block( PIA *pi, char * buf, int count )
|
|
|
|
{ int k;
|
|
|
|
switch (pi->mode) {
|
|
|
|
case 0:
|
|
case 1:
|
|
case 2: w0(0x90); w2(4); w2(6); w2(4);
|
|
for(k=0;k<count/2;k++) {
|
|
w0(buf[2*k+1]); w2(0); w2(4);
|
|
w0(buf[2*k]); w2(5); w2(4);
|
|
}
|
|
break;
|
|
|
|
case 3: w0(0xa0); w2(4); w2(6); w2(4); w3(0);
|
|
for(k=0;k<count/2;k++) {
|
|
w4(buf[2*k+1]);
|
|
w4(buf[2*k]);
|
|
}
|
|
w2(4); w2(0); w2(4);
|
|
break;
|
|
|
|
case 4: w0(0xa0); w2(4); w2(6); w2(4); w3(0);
|
|
for(k=0;k<count/2;k++) w4w(pi_swab16(buf,k));
|
|
w2(4); w2(0); w2(4);
|
|
break;
|
|
|
|
case 5: w0(0xa0); w2(4); w2(6); w2(4); w3(0);
|
|
for(k=0;k<count/4;k++) w4l(pi_swab32(buf,k));
|
|
w2(4); w2(0); w2(4);
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
static void kbic_log_adapter( PIA *pi, char * scratch,
|
|
int verbose, char * chip )
|
|
|
|
{ char *mode_string[6] = {"4-bit","5/3","8-bit",
|
|
"EPP-8","EPP_16","EPP-32"};
|
|
|
|
printk("%s: kbic %s, KingByte %s at 0x%x, ",
|
|
pi->device,KBIC_VERSION,chip,pi->port);
|
|
printk("mode %d (%s), delay %d\n",pi->mode,
|
|
mode_string[pi->mode],pi->delay);
|
|
|
|
}
|
|
|
|
static void k951_log_adapter( PIA *pi, char * scratch, int verbose )
|
|
|
|
{ kbic_log_adapter(pi,scratch,verbose,"KBIC-951A");
|
|
}
|
|
|
|
static void k971_log_adapter( PIA *pi, char * scratch, int verbose )
|
|
|
|
{ kbic_log_adapter(pi,scratch,verbose,"KBIC-971A");
|
|
}
|
|
|
|
static struct pi_protocol k951 = {
|
|
.owner = THIS_MODULE,
|
|
.name = "k951",
|
|
.max_mode = 6,
|
|
.epp_first = 3,
|
|
.default_delay = 1,
|
|
.max_units = 1,
|
|
.write_regr = kbic_write_regr,
|
|
.read_regr = kbic_read_regr,
|
|
.write_block = kbic_write_block,
|
|
.read_block = kbic_read_block,
|
|
.connect = k951_connect,
|
|
.disconnect = k951_disconnect,
|
|
.log_adapter = k951_log_adapter,
|
|
};
|
|
|
|
static struct pi_protocol k971 = {
|
|
.owner = THIS_MODULE,
|
|
.name = "k971",
|
|
.max_mode = 6,
|
|
.epp_first = 3,
|
|
.default_delay = 1,
|
|
.max_units = 1,
|
|
.write_regr = kbic_write_regr,
|
|
.read_regr = kbic_read_regr,
|
|
.write_block = kbic_write_block,
|
|
.read_block = kbic_read_block,
|
|
.connect = k971_connect,
|
|
.disconnect = k971_disconnect,
|
|
.log_adapter = k971_log_adapter,
|
|
};
|
|
|
|
static int __init kbic_init(void)
|
|
{
|
|
int rv;
|
|
|
|
rv = paride_register(&k951);
|
|
if (rv < 0)
|
|
return rv;
|
|
rv = paride_register(&k971);
|
|
if (rv < 0)
|
|
paride_unregister(&k951);
|
|
return rv;
|
|
}
|
|
|
|
static void __exit kbic_exit(void)
|
|
{
|
|
paride_unregister(&k951);
|
|
paride_unregister(&k971);
|
|
}
|
|
|
|
MODULE_LICENSE("GPL");
|
|
module_init(kbic_init)
|
|
module_exit(kbic_exit)
|