1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
212 lines
4.4 KiB
C
212 lines
4.4 KiB
C
/*
|
|
fit3.c (c) 1998 Grant R. Guenther <grant@torque.net>
|
|
Under the terms of the GNU General Public License.
|
|
|
|
fit3.c is a low-level protocol driver for newer models
|
|
of the Fidelity International Technology parallel port adapter.
|
|
This adapter is used in their TransDisk 3000 portable
|
|
hard-drives, as well as CD-ROM, PD-CD and other devices.
|
|
|
|
The TD-2000 and certain older devices use a different protocol.
|
|
Try the fit2 protocol module with them.
|
|
|
|
NB: The FIT adapters do not appear to support the control
|
|
registers. So, we map ALT_STATUS to STATUS and NO-OP writes
|
|
to the device control register - this means that IDE reset
|
|
will not work on these devices.
|
|
|
|
*/
|
|
|
|
#define FIT3_VERSION "1.0"
|
|
|
|
#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 j44(a,b) (((a>>3)&0x0f)|((b<<1)&0xf0))
|
|
|
|
#define w7(byte) {out_p(7,byte);}
|
|
#define r7() (in_p(7) & 0xff)
|
|
|
|
/* cont = 0 - access the IDE register file
|
|
cont = 1 - access the IDE command set
|
|
|
|
*/
|
|
|
|
static void fit3_write_regr( PIA *pi, int cont, int regr, int val)
|
|
|
|
{ if (cont == 1) return;
|
|
|
|
switch (pi->mode) {
|
|
|
|
case 0:
|
|
case 1: w2(0xc); w0(regr); w2(0x8); w2(0xc);
|
|
w0(val); w2(0xd);
|
|
w0(0); w2(0xc);
|
|
break;
|
|
|
|
case 2: w2(0xc); w0(regr); w2(0x8); w2(0xc);
|
|
w4(val); w4(0);
|
|
w2(0xc);
|
|
break;
|
|
|
|
}
|
|
}
|
|
|
|
static int fit3_read_regr( PIA *pi, int cont, int regr )
|
|
|
|
{ int a, b;
|
|
|
|
if (cont) {
|
|
if (regr != 6) return 0xff;
|
|
regr = 7;
|
|
}
|
|
|
|
switch (pi->mode) {
|
|
|
|
case 0: w2(0xc); w0(regr + 0x10); w2(0x8); w2(0xc);
|
|
w2(0xd); a = r1();
|
|
w2(0xf); b = r1();
|
|
w2(0xc);
|
|
return j44(a,b);
|
|
|
|
case 1: w2(0xc); w0(regr + 0x90); w2(0x8); w2(0xc);
|
|
w2(0xec); w2(0xee); w2(0xef); a = r0();
|
|
w2(0xc);
|
|
return a;
|
|
|
|
case 2: w2(0xc); w0(regr + 0x90); w2(0x8); w2(0xc);
|
|
w2(0xec);
|
|
a = r4(); b = r4();
|
|
w2(0xc);
|
|
return a;
|
|
|
|
}
|
|
return -1;
|
|
|
|
}
|
|
|
|
static void fit3_read_block( PIA *pi, char * buf, int count )
|
|
|
|
{ int k, a, b, c, d;
|
|
|
|
switch (pi->mode) {
|
|
|
|
case 0: w2(0xc); w0(0x10); w2(0x8); w2(0xc);
|
|
for (k=0;k<count/2;k++) {
|
|
w2(0xd); a = r1();
|
|
w2(0xf); b = r1();
|
|
w2(0xc); c = r1();
|
|
w2(0xe); d = r1();
|
|
buf[2*k ] = j44(a,b);
|
|
buf[2*k+1] = j44(c,d);
|
|
}
|
|
w2(0xc);
|
|
break;
|
|
|
|
case 1: w2(0xc); w0(0x90); w2(0x8); w2(0xc);
|
|
w2(0xec); w2(0xee);
|
|
for (k=0;k<count/2;k++) {
|
|
w2(0xef); a = r0();
|
|
w2(0xee); b = r0();
|
|
buf[2*k ] = a;
|
|
buf[2*k+1] = b;
|
|
}
|
|
w2(0xec);
|
|
w2(0xc);
|
|
break;
|
|
|
|
case 2: w2(0xc); w0(0x90); w2(0x8); w2(0xc);
|
|
w2(0xec);
|
|
for (k=0;k<count;k++) buf[k] = r4();
|
|
w2(0xc);
|
|
break;
|
|
|
|
}
|
|
}
|
|
|
|
static void fit3_write_block( PIA *pi, char * buf, int count )
|
|
|
|
{ int k;
|
|
|
|
switch (pi->mode) {
|
|
|
|
case 0:
|
|
case 1: w2(0xc); w0(0); w2(0x8); w2(0xc);
|
|
for (k=0;k<count/2;k++) {
|
|
w0(buf[2*k ]); w2(0xd);
|
|
w0(buf[2*k+1]); w2(0xc);
|
|
}
|
|
break;
|
|
|
|
case 2: w2(0xc); w0(0); w2(0x8); w2(0xc);
|
|
for (k=0;k<count;k++) w4(buf[k]);
|
|
w2(0xc);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void fit3_connect ( PIA *pi )
|
|
|
|
{ pi->saved_r0 = r0();
|
|
pi->saved_r2 = r2();
|
|
w2(0xc); w0(0); w2(0xa);
|
|
if (pi->mode == 2) {
|
|
w2(0xc); w0(0x9); w2(0x8); w2(0xc);
|
|
}
|
|
}
|
|
|
|
static void fit3_disconnect ( PIA *pi )
|
|
|
|
{ w2(0xc); w0(0xa); w2(0x8); w2(0xc);
|
|
w0(pi->saved_r0);
|
|
w2(pi->saved_r2);
|
|
}
|
|
|
|
static void fit3_log_adapter( PIA *pi, char * scratch, int verbose )
|
|
|
|
{ char *mode_string[3] = {"4-bit","8-bit","EPP"};
|
|
|
|
printk("%s: fit3 %s, FIT 3000 adapter at 0x%x, "
|
|
"mode %d (%s), delay %d\n",
|
|
pi->device,FIT3_VERSION,pi->port,
|
|
pi->mode,mode_string[pi->mode],pi->delay);
|
|
|
|
}
|
|
|
|
static struct pi_protocol fit3 = {
|
|
.owner = THIS_MODULE,
|
|
.name = "fit3",
|
|
.max_mode = 3,
|
|
.epp_first = 2,
|
|
.default_delay = 1,
|
|
.max_units = 1,
|
|
.write_regr = fit3_write_regr,
|
|
.read_regr = fit3_read_regr,
|
|
.write_block = fit3_write_block,
|
|
.read_block = fit3_read_block,
|
|
.connect = fit3_connect,
|
|
.disconnect = fit3_disconnect,
|
|
.log_adapter = fit3_log_adapter,
|
|
};
|
|
|
|
static int __init fit3_init(void)
|
|
{
|
|
return pi_register(&fit3)-1;
|
|
}
|
|
|
|
static void __exit fit3_exit(void)
|
|
{
|
|
pi_unregister(&fit3);
|
|
}
|
|
|
|
MODULE_LICENSE("GPL");
|
|
module_init(fit3_init)
|
|
module_exit(fit3_exit)
|