1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * (c) 1998 Grant R. Guenther <grant@torque.net>
5 * fit3.c is a low-level protocol driver for newer models
6 * of the Fidelity International Technology parallel port adapter.
7 * This adapter is used in their TransDisk 3000 portable
8 * hard-drives, as well as CD-ROM, PD-CD and other devices.
10 * The TD-2000 and certain older devices use a different protocol.
11 * Try the fit2 protocol module with them.
14 #include <linux/module.h>
15 #include <linux/init.h>
16 #include <linux/delay.h>
17 #include <linux/kernel.h>
18 #include <linux/types.h>
19 #include <linux/wait.h>
21 #include "pata_parport.h"
23 #define j44(a, b) (((a >> 3) & 0x0f) | ((b << 1) & 0xf0))
25 #define w7(byte) out_p(7, byte)
26 #define r7() (in_p(7) & 0xff)
29 * cont = 0 - access the IDE register file
30 * cont = 1 - access the IDE command set
33 static void fit3_write_regr(struct pi_adapter *pi, int cont, int regr, int val)
40 w2(0xc); w0(regr); w2(0x8); w2(0xc);
45 w2(0xc); w0(regr); w2(0x8); w2(0xc);
52 static int fit3_read_regr(struct pi_adapter *pi, int cont, int regr)
60 w2(0xc); w0(regr + 0x10); w2(0x8); w2(0xc);
66 w2(0xc); w0(regr + 0x90); w2(0x8); w2(0xc);
67 w2(0xec); w2(0xee); w2(0xef); a = r0();
71 w2(0xc); w0(regr + 0x90); w2(0x8); w2(0xc);
81 static void fit3_read_block(struct pi_adapter *pi, char *buf, int count)
87 w2(0xc); w0(0x10); w2(0x8); w2(0xc);
88 for (k = 0; k < count / 2; k++) {
93 buf[2 * k] = j44(a, b);
94 buf[2 * k + 1] = j44(c, d);
99 w2(0xc); w0(0x90); w2(0x8); w2(0xc);
101 for (k = 0; k < count / 2; k++) {
111 w2(0xc); w0(0x90); w2(0x8); w2(0xc);
113 for (k = 0; k < count; k++)
120 static void fit3_write_block(struct pi_adapter *pi, char *buf, int count)
127 w2(0xc); w0(0); w2(0x8); w2(0xc);
128 for (k = 0; k < count / 2; k++) {
129 w0(buf[2 * k]); w2(0xd);
130 w0(buf[2 * k + 1]); w2(0xc);
134 w2(0xc); w0(0); w2(0x8); w2(0xc);
135 for (k = 0; k < count; k++)
142 static void fit3_connect(struct pi_adapter *pi)
146 w2(0xc); w0(0); w2(0xa);
153 static void fit3_disconnect(struct pi_adapter *pi)
155 w2(0xc); w0(0xa); w2(0x8); w2(0xc);
160 static void fit3_log_adapter(struct pi_adapter *pi)
162 char *mode_string[3] = { "4-bit", "8-bit", "EPP"};
165 "FIT 3000 adapter at 0x%x, mode %d (%s), delay %d\n",
166 pi->port, pi->mode, mode_string[pi->mode], pi->delay);
169 static struct pi_protocol fit3 = {
170 .owner = THIS_MODULE,
176 .write_regr = fit3_write_regr,
177 .read_regr = fit3_read_regr,
178 .write_block = fit3_write_block,
179 .read_block = fit3_read_block,
180 .connect = fit3_connect,
181 .disconnect = fit3_disconnect,
182 .log_adapter = fit3_log_adapter,
185 MODULE_LICENSE("GPL");
186 MODULE_AUTHOR("Grant R. Guenther <grant@torque.net>");
187 MODULE_DESCRIPTION("Fidelity International Technology parallel port IDE adapter"
188 "(newer models) protocol driver");
189 module_pata_parport_driver(fit3);