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path: root/drivers/ata/pata_parport/fit3.c
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Diffstat (limited to 'drivers/ata/pata_parport/fit3.c')
-rw-r--r--drivers/ata/pata_parport/fit3.c206
1 files changed, 104 insertions, 102 deletions
diff --git a/drivers/ata/pata_parport/fit3.c b/drivers/ata/pata_parport/fit3.c
index 75df656ac472..c172a38ae67d 100644
--- a/drivers/ata/pata_parport/fit3.c
+++ b/drivers/ata/pata_parport/fit3.c
@@ -1,21 +1,20 @@
-/*
- 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.
-
-*/
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * (c) 1998 Grant R. Guenther <grant@torque.net>
+ *
+ * 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.
+ */
#include <linux/module.h>
#include <linux/init.h>
@@ -26,152 +25,155 @@
#include <asm/io.h>
#include "pata_parport.h"
-#define j44(a,b) (((a>>3)&0x0f)|((b<<1)&0xf0))
-
-#define w7(byte) {out_p(7,byte);}
-#define r7() (in_p(7) & 0xff)
+#define j44(a, b) (((a >> 3) & 0x0f) | ((b << 1) & 0xf0))
-/* cont = 0 - access the IDE register file
- cont = 1 - access the IDE command set
+#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(struct pi_adapter *pi, int cont, int regr, int val)
-
-{ if (cont == 1) return;
+{
+ if (cont == 1)
+ return;
switch (pi->mode) {
-
case 0:
- case 1: w2(0xc); w0(regr); w2(0x8); w2(0xc);
- w0(val); w2(0xd);
+ 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);
+ case 2:
+ w2(0xc); w0(regr); w2(0x8); w2(0xc);
w4(val); w4(0);
w2(0xc);
break;
-
}
}
static int fit3_read_regr(struct pi_adapter *pi, int cont, int regr)
-
-{ int a, b;
+{
+ int a, b;
if (cont) {
- if (regr != 6) return 0xff;
- regr = 7;
- }
+ if (regr != 6)
+ return 0xff;
+ regr = 7;
+ }
switch (pi->mode) {
-
- case 0: w2(0xc); w0(regr + 0x10); w2(0x8); w2(0xc);
+ case 0:
+ w2(0xc); w0(regr + 0x10); w2(0x8); w2(0xc);
w2(0xd); a = r1();
- w2(0xf); b = 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();
+ 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();
+ case 2:
+ w2(0xc); w0(regr + 0x90); w2(0x8); w2(0xc);
+ w2(0xec);
+ a = r4(); b = r4();
w2(0xc);
return a;
-
}
- return -1;
+ return -1;
}
static void fit3_read_block(struct pi_adapter *pi, char *buf, int count)
-
-{ int k, a, b, c, d;
+{
+ 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);
+ 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);
+ 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;
+ 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(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);
+ 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(struct pi_adapter *pi, char *buf, int count)
+{
+ int k;
-{ int k;
-
- switch (pi->mode) {
-
+ 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);
+ 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);
+ 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(struct pi_adapter *pi)
-
-{ pi->saved_r0 = r0();
- pi->saved_r2 = r2();
+{
+ 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);
- }
+ if (pi->mode == 2) {
+ w2(0xc); w0(0x9);
+ w2(0x8); w2(0xc);
+ }
}
static void fit3_disconnect(struct pi_adapter *pi)
-
-{ w2(0xc); w0(0xa); w2(0x8); w2(0xc);
+{
+ w2(0xc); w0(0xa); w2(0x8); w2(0xc);
w0(pi->saved_r0);
- w2(pi->saved_r2);
-}
+ w2(pi->saved_r2);
+}
static void fit3_log_adapter(struct pi_adapter *pi)
+{
+ char *mode_string[3] = { "4-bit", "8-bit", "EPP"};
-{ char *mode_string[3] = {"4-bit","8-bit","EPP"};
-
- dev_info(&pi->dev, "FIT 3000 adapter at 0x%x, mode %d (%s), delay %d\n",
- pi->port, pi->mode, mode_string[pi->mode], pi->delay);
+ dev_info(&pi->dev,
+ "FIT 3000 adapter at 0x%x, mode %d (%s), delay %d\n",
+ pi->port, pi->mode, mode_string[pi->mode], pi->delay);
}
static struct pi_protocol fit3 = {
generated by cgit v1.2.3 (git 2.39.0) at 2024-08-06 02:31:08 +0300