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Commit d6332c12 authored by Damien Le Moal's avatar Damien Le Moal
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ata: pata_parport: Fix dstr module code indentation and style 

Fix the header, indentation and coding style in the dstr pata parport
protocol module to suppress warnings from smatch and other static code
analyzers.

No functional changes.
Signed-off-by: default avatarDamien Le Moal <dlemoal@kernel.org>
parent 630b64bc
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Showing with 154 additions and 131 deletions
drivers/ata/pata_parport/dstr.c
View file @ d6332c12
/*
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.
*/
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* (c) 1997-1998 Grant R. Guenther <grant@torque.net>
*
* dstr.c is a low-level protocol driver for the DataStor EP2000 parallel
* to IDE adapter chip.
*/
#include <linux/module.h>
#include <linux/init.h>
......@@ -16,178 +15,202 @@
#include <asm/io.h>
#include "pata_parport.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
*/
/*
* 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 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
*/
/*
* 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(struct pi_adapter *pi, int cont, int regr)
{
int a, b, r;
{ int a, b, r;
r = regr + cont_map[cont];
r = regr + cont_map[cont];
w0(0x81); P1;
if (pi->mode) { w0(0x11); } else { w0(1); }
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;
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;
case 4:
w2(0x24); a = r4(); w2(4);
return a;
}
}
return -1;
}
return -1;
}
static void dstr_write_regr(struct pi_adapter *pi, int cont, int regr, int val)
{
int r = regr + cont_map[cont];
{ int r;
r = regr + cont_map[cont];
w0(0x81); P1;
if (pi->mode >= 2) { w0(0x11); } else { w0(1); }
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);
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;
}
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);
#define CCP(x) \
do { \
w0(0xff); w2(0xc); w2(4); \
w0(0xaa); w0(0x55); w0(0); w0(0xff); \
w0(0x87); w0(0x78); \
w0(x); w2(5); w2(4); \
} while (0)
static void dstr_connect(struct pi_adapter *pi)
{ pi->saved_r0 = r0();
pi->saved_r2 = r2();
w2(4); CCP(0xe0); w0(0xff);
{
pi->saved_r0 = r0();
pi->saved_r2 = r2();
w2(4); CCP(0xe0); w0(0xff);
}
static void dstr_disconnect(struct pi_adapter *pi)
{ CCP(0x30);
w0(pi->saved_r0);
w2(pi->saved_r2);
}
{
CCP(0x30);
w0(pi->saved_r0);
w2(pi->saved_r2);
}
static void dstr_read_block(struct pi_adapter *pi, char *buf, int count)
{ int k, a, b;
{
int k, a, b;
w0(0x81); P1;
if (pi->mode) { w0(0x19); } else { w0(9); }
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;
}
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(struct pi_adapter *pi, char *buf, int count)
{
int k;
{ 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;
w0(0x81); P1;
if (pi->mode)
w0(0x19);
else
w0(9);
P2; w0(0x82); P1; P3; w0(0x20); P1;
case 2: w2(0xc5);
for (k=0;k<count;k++) w4(buf[k]);
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;
}
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(struct pi_adapter *pi)
{ char *mode_string[5] = {"4-bit","8-bit","EPP-8",
"EPP-16","EPP-32"};
{
char *mode_string[5] = { "4-bit", "8-bit", "EPP-8", "EPP-16", "EPP-32" };
dev_info(&pi->dev, "DataStor EP2000 at 0x%x, mode %d (%s), delay %d\n",
pi->port, pi->mode, mode_string[pi->mode], pi->delay);
dev_info(&pi->dev,
"DataStor EP2000 at 0x%x, mode %d (%s), delay %d\n",
pi->port, pi->mode, mode_string[pi->mode], pi->delay);
}
static struct pi_protocol dstr = {
......
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