UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity
OpenCloudOS-Kernel/drivers/ata/pata_parport/epia.c

317 lines
7.9 KiB
C
Raw Normal View History

Linux-2.6.12-rc2 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!
2005-04-17 06:20:36 +08:00
/*
epia.c (c) 1997-8 Grant R. Guenther <grant@torque.net>
Under the terms of the GNU General Public License.
epia.c is a low-level protocol driver for Shuttle Technologies
EPIA parallel to IDE adapter chip. This device is now obsolete
and has been replaced with the EPAT chip, which is supported
by epat.c, however, some devices based on EPIA are still
available.
*/
/* Changes:
1.01 GRG 1998.05.06 init_proto, release_proto
1.02 GRG 1998.06.17 support older versions of EPIA
*/
#define EPIA_VERSION "1.02"
#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>
drivers/block: Remove PARIDE core and high-level protocols Remove PARIDE core and high level protocols, taking care not to break low-level drivers (used by pata_parport). Also update documentation. Signed-off-by: Ondrej Zary <linux@zary.sk> Acked-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
2023-01-31 05:10:49 +08:00
#include <linux/pata_parport.h>
Linux-2.6.12-rc2 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!
2005-04-17 06:20:36 +08:00
/* mode codes: 0 nybble reads on port 1, 8-bit writes
1 5/3 reads on ports 1 & 2, 8-bit writes
2 8-bit reads and writes
3 8-bit EPP mode
4 16-bit EPP
5 32-bit EPP
*/
#define j44(a,b) (((a>>4)&0x0f)+(b&0xf0))
#define j53(a,b) (((a>>3)&0x1f)+((b<<4)&0xe0))
/* cont = 0 IDE register file
cont = 1 IDE control registers
*/
static int cont_map[2] = { 0, 0x80 };
static int epia_read_regr( PIA *pi, int cont, int regr )
{ int a, b, r;
regr += cont_map[cont];
switch (pi->mode) {
case 0: r = regr^0x39;
w0(r); w2(1); w2(3); w0(r);
a = r1(); w2(1); b = r1(); w2(4);
return j44(a,b);
case 1: r = regr^0x31;
w0(r); w2(1); w0(r&0x37);
w2(3); w2(5); w0(r|0xf0);
a = r1(); b = r2(); w2(4);
return j53(a,b);
case 2: r = regr^0x29;
w0(r); w2(1); w2(0X21); w2(0x23);
a = r0(); w2(4);
return a;
case 3:
case 4:
case 5: w3(regr); w2(0x24); a = r4(); w2(4);
return a;
}
return -1;
}
static void epia_write_regr( PIA *pi, int cont, int regr, int val)
{ int r;
regr += cont_map[cont];
switch (pi->mode) {
case 0:
case 1:
case 2: r = regr^0x19;
w0(r); w2(1); w0(val); w2(3); w2(4);
break;
case 3:
case 4:
case 5: r = regr^0x40;
w3(r); w4(val); w2(4);
break;
}
}
#define WR(r,v) epia_write_regr(pi,0,r,v)
#define RR(r) (epia_read_regr(pi,0,r))
/* The use of register 0x84 is entirely unclear - it seems to control
some EPP counters ... currently we know about 3 different block
sizes: the standard 512 byte reads and writes, 12 byte writes and
2048 byte reads (the last two being used in the CDrom drivers.
*/
static void epia_connect ( PIA *pi )
{ pi->saved_r0 = r0();
pi->saved_r2 = r2();
w2(4); w0(0xa0); w0(0x50); w0(0xc0); w0(0x30); w0(0xa0); w0(0);
w2(1); w2(4);
if (pi->mode >= 3) {
w0(0xa); w2(1); w2(4); w0(0x82); w2(4); w2(0xc); w2(4);
w2(0x24); w2(0x26); w2(4);
}
WR(0x86,8);
}
static void epia_disconnect ( PIA *pi )
{ /* WR(0x84,0x10); */
w0(pi->saved_r0);
w2(1); w2(4);
w0(pi->saved_r0);
w2(pi->saved_r2);
}
static void epia_read_block( PIA *pi, char * buf, int count )
{ int k, ph, a, b;
switch (pi->mode) {
case 0: w0(0x81); w2(1); w2(3); w0(0xc1);
ph = 1;
for (k=0;k<count;k++) {
w2(2+ph); a = r1();
w2(4+ph); b = r1();
buf[k] = j44(a,b);
ph = 1 - ph;
}
w0(0); w2(4);
break;
case 1: w0(0x91); w2(1); w0(0x10); w2(3);
w0(0x51); w2(5); w0(0xd1);
ph = 1;
for (k=0;k<count;k++) {
w2(4+ph);
a = r1(); b = r2();
buf[k] = j53(a,b);
ph = 1 - ph;
}
w0(0); w2(4);
break;
case 2: w0(0x89); w2(1); w2(0x23); w2(0x21);
ph = 1;
for (k=0;k<count;k++) {
w2(0x24+ph);
buf[k] = r0();
ph = 1 - ph;
}
w2(6); w2(4);
break;
case 3: if (count > 512) WR(0x84,3);
w3(0); w2(0x24);
for (k=0;k<count;k++) buf[k] = r4();
w2(4); WR(0x84,0);
break;
case 4: if (count > 512) WR(0x84,3);
w3(0); w2(0x24);
for (k=0;k<count/2;k++) ((u16 *)buf)[k] = r4w();
w2(4); WR(0x84,0);
break;
case 5: if (count > 512) WR(0x84,3);
w3(0); w2(0x24);
for (k=0;k<count/4;k++) ((u32 *)buf)[k] = r4l();
w2(4); WR(0x84,0);
break;
}
}
static void epia_write_block( PIA *pi, char * buf, int count )
{ int ph, k, last, d;
switch (pi->mode) {
case 0:
case 1:
case 2: w0(0xa1); w2(1); w2(3); w2(1); w2(5);
ph = 0; last = 0x8000;
for (k=0;k<count;k++) {
d = buf[k];
if (d != last) { last = d; w0(d); }
w2(4+ph);
ph = 1 - ph;
}
w2(7); w2(4);
break;
case 3: if (count < 512) WR(0x84,1);
w3(0x40);
for (k=0;k<count;k++) w4(buf[k]);
if (count < 512) WR(0x84,0);
break;
case 4: if (count < 512) WR(0x84,1);
w3(0x40);
for (k=0;k<count/2;k++) w4w(((u16 *)buf)[k]);
if (count < 512) WR(0x84,0);
break;
case 5: if (count < 512) WR(0x84,1);
w3(0x40);
for (k=0;k<count/4;k++) w4l(((u32 *)buf)[k]);
if (count < 512) WR(0x84,0);
break;
}
}
static int epia_test_proto( PIA *pi, char * scratch, int verbose )
{ int j, k, f;
int e[2] = {0,0};
epia_connect(pi);
for (j=0;j<2;j++) {
WR(6,0xa0+j*0x10);
for (k=0;k<256;k++) {
WR(2,k^0xaa);
WR(3,k^0x55);
if (RR(2) != (k^0xaa)) e[j]++;
}
WR(2,1); WR(3,1);
}
epia_disconnect(pi);
f = 0;
epia_connect(pi);
WR(0x84,8);
epia_read_block(pi,scratch,512);
for (k=0;k<256;k++) {
if ((scratch[2*k] & 0xff) != ((k+1) & 0xff)) f++;
if ((scratch[2*k+1] & 0xff) != ((-2-k) & 0xff)) f++;
}
WR(0x84,0);
epia_disconnect(pi);
if (verbose) {
printk("%s: epia: port 0x%x, mode %d, test=(%d,%d,%d)\n",
pi->device,pi->port,pi->mode,e[0],e[1],f);
}
return (e[0] && e[1]) || f;
}
static void epia_log_adapter( PIA *pi, char * scratch, int verbose )
{ char *mode_string[6] = {"4-bit","5/3","8-bit",
"EPP-8","EPP-16","EPP-32"};
printk("%s: epia %s, Shuttle EPIA at 0x%x, ",
pi->device,EPIA_VERSION,pi->port);
printk("mode %d (%s), delay %d\n",pi->mode,
mode_string[pi->mode],pi->delay);
}
static struct pi_protocol epia = {
.owner = THIS_MODULE,
.name = "epia",
.max_mode = 6,
.epp_first = 3,
.default_delay = 1,
.max_units = 1,
.write_regr = epia_write_regr,
.read_regr = epia_read_regr,
.write_block = epia_write_block,
.read_block = epia_read_block,
.connect = epia_connect,
.disconnect = epia_disconnect,
.test_proto = epia_test_proto,
.log_adapter = epia_log_adapter,
};
static int __init epia_init(void)
{
[PATCH] paride_register(): shuffle return values 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>
2006-12-07 12:36:21 +08:00
return paride_register(&epia);
Linux-2.6.12-rc2 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!
2005-04-17 06:20:36 +08:00
}
static void __exit epia_exit(void)
{
[PATCH] paride: rename pi_register() and pi_unregister() We're about to change the semantics of pi_register()'s return value, so rename it to something else first, so that any unconverted code reliaby breaks. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07 12:36:20 +08:00
paride_unregister(&epia);
Linux-2.6.12-rc2 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!
2005-04-17 06:20:36 +08:00
}
MODULE_LICENSE("GPL");
module_init(epia_init)
module_exit(epia_exit)