1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * (c) 1997-1998  Grant R. Guenther <[email protected]>
6  * to IDE adapter from Shuttle Technologies.  This adapter is
7  * used in many popular parallel port disk products such as the
28 		 "used in any recent Imation SuperDisk (LS-120) drive.");
31  * cont =  0   IDE register file
32  * cont =  1   IDE control registers
41 	switch (pi->mode) {  in epat_write_regr()
61 	switch (pi->mode) {  in epat_read_regr()
82 	return -1;	/* never gets here */  in epat_read_regr()
89 	switch (pi->mode) {  in epat_read_block()
95 			if (k == count-1)  in epat_read_block()
104 			ph =  1 - ph;  in epat_read_block()
113 			if (k == count - 1)  in epat_read_block()
118 			ph = 1 - ph;  in epat_read_block()
126 		for (k = 0; k < count - 1; k++) {  in epat_read_block()
129 			ph = 1 - ph;  in epat_read_block()
132 		buf[count - 1] = r0();  in epat_read_block()
138 		for (k = 0; k < count - 1; k++)  in epat_read_block()
141 		buf[count - 1] = r4();  in epat_read_block()
147 		for (k = 0; k < count / 2 - 1; k++)  in epat_read_block()
149 		buf[count - 2] = r4();  in epat_read_block()
151 		buf[count - 1] = r4();  in epat_read_block()
157 		for (k = 0; k < count / 4 - 1; k++)  in epat_read_block()
159 		for (k = count - 4; k < count - 1; k++)  in epat_read_block()
162 		buf[count - 1] = r4();  in epat_read_block()
172 	switch (pi->mode) {  in epat_write_block()
181 			ph = 1 - ph;  in epat_write_block()
211 /* and these access the IDE task file */
228 	pi->saved_r0 = r0();  in epat_connect()
229 	pi->saved_r2 = r2();  in epat_connect()
251         if (pi->mode >= 3) {  in epat_connect()
268 	w0(pi->saved_r0);  in epat_disconnect()
269 	w2(pi->saved_r2);  in epat_disconnect()
302 		if ((scratch[2 * k + 1] & 0xff) != 0xff - k)  in epat_test_proto()
307 	dev_dbg(&pi->dev,  in epat_test_proto()
308 		"epat: port 0x%x, mode %d, ccr %x, test=(%d,%d,%d)\n",  in epat_test_proto()
309 		pi->port, pi->mode, cc, e[0], e[1], f);  in epat_test_proto()
318 		{ "4-bit", "5/3", "8-bit", "EPP-8", "EPP-16", "EPP-32" };  in epat_log_adapter()
325 	dev_info(&pi->dev,  in epat_log_adapter()
327 		 ver, pi->port, pi->mode, mode_string[pi->mode], pi->delay);  in epat_log_adapter()
362 MODULE_DESCRIPTION("Shuttle Technologies EPAT parallel port IDE adapter "