20 #define j44(a, b)	(((a >> 4) & 0x0f) + (b & 0xf0))
21 #define j53(a, b)	(((a >> 3) & 0x1f) + ((b << 4) & 0xe0))
25 module_param(epatc8, int, 0);
31  * cont =  0   IDE register file
35 static int cont_map[3] = { 0x18, 0x10, 0 };
42 	case 0:  in epat_write_regr()
45 		w0(0x60+r); w2(1); w0(val); w2(4);  in epat_write_regr()
50 		w3(0x40+r); w4(val);  in epat_write_regr()
63 	case 0:  in epat_read_regr()
68 		w0(0x40+r); w2(1); w2(4);  in epat_read_regr()
69 		a = r1(); b = r2(); w0(0xff);  in epat_read_regr()
72 		w0(0x20+r); w2(1); w2(0x25);  in epat_read_regr()
78 		w3(r); w2(0x24); a = r4(); w2(4);  in epat_read_regr()
91 	case 0:  in epat_read_block()
92 		w0(7); w2(1); w2(3); w0(0xff);  in epat_read_block()
93 		ph = 0;  in epat_read_block()
94 		for (k = 0; k < count; k++) {  in epat_read_block()
96 				w0(0xfd);  in epat_read_block()
106 		w0(0); w2(4);  in epat_read_block()
110 		w0(0x47); w2(1); w2(5); w0(0xff);  in epat_read_block()
111 		ph = 0;  in epat_read_block()
112 		for (k = 0; k < count; k++) {  in epat_read_block()
114 				w0(0xfd);  in epat_read_block()
120 		w0(0); w2(4);  in epat_read_block()
124 		w0(0x27); w2(1); w2(0x25); w0(0);  in epat_read_block()
125 		ph = 0;  in epat_read_block()
126 		for (k = 0; k < count - 1; k++) {  in epat_read_block()
127 			w2(0x24 + ph);  in epat_read_block()
131 		w2(0x26); w2(0x27);  in epat_read_block()
133 		w2(0x25); w2(4);  in epat_read_block()
137 		w3(0x80); w2(0x24);  in epat_read_block()
138 		for (k = 0; k < count - 1; k++)  in epat_read_block()
140 		w2(4); w3(0xa0); w2(0x24);  in epat_read_block()
146 		w3(0x80); w2(0x24);  in epat_read_block()
147 		for (k = 0; k < count / 2 - 1; k++)  in epat_read_block()
150 		w2(4); w3(0xa0); w2(0x24);  in epat_read_block()
156 		w3(0x80); w2(0x24);  in epat_read_block()
157 		for (k = 0; k < count / 4 - 1; k++)  in epat_read_block()
161 		w2(4); w3(0xa0); w2(0x24);  in epat_read_block()
173 	case 0:  in epat_write_block()
176 		w0(0x67); w2(1); w2(5);  in epat_write_block()
177 		ph = 0;  in epat_write_block()
178 		for (k = 0; k < count; k++) {  in epat_write_block()
186 		w3(0xc0);  in epat_write_block()
187 		for (k = 0; k < count; k++)  in epat_write_block()
192 		w3(0xc0);  in epat_write_block()
193 		for (k = 0; k < count / 2; k++)  in epat_write_block()
198 		w3(0xc0);  in epat_write_block()
199 		for (k = 0; k < count / 4; k++)  in epat_write_block()
213 #define WRi(r, v)	epat_write_regr(pi, 0, r, v)
214 #define RRi(r)		epat_read_regr(pi, 0, r)
220 		w2(4); w0(0x22); w0(0xaa);	\
221 		w0(0x55); w0(0); w0(0xff);	\
222 		w0(0x87); w0(0x78); w0(x);	\
223 		w2(4); w2(5); w2(4); w0(0xff);	\
224 	} while (0)
232 	CPP(0);  in epat_connect()
235 		CPP(0x40); CPP(0xe0);  in epat_connect()
236 		w0(0); w2(1); w2(4);  in epat_connect()
237 		WR(0x8, 0x12);  in epat_connect()
238 		WR(0xc, 0x14);  in epat_connect()
239 		WR(0x12, 0x10);  in epat_connect()
240 		WR(0xe, 0xf);  in epat_connect()
241 		WR(0xf, 4);  in epat_connect()
242 		/* WR(0xe,0xa);WR(0xf,4); */  in epat_connect()
243 		WR(0xe, 0xd);  in epat_connect()
244 		WR(0xf, 0);  in epat_connect()
245 		/* CPP(0x30); */  in epat_connect()
249 	CPP(0xe0);  in epat_connect()
250 	w0(0); w2(1); w2(4); /* Idle into SPP */  in epat_connect()
252 		w0(0); w2(1); w2(4); w2(0xc);  in epat_connect()
254 		w0(0x40); w2(6); w2(7); w2(4); w2(0xc); w2(4);  in epat_connect()
258 		WR(8, 0x10);  in epat_connect()
259 		WR(0xc, 0x14);  in epat_connect()
260 		WR(0xa, 0x38);  in epat_connect()
261 		WR(0x12, 0x10);  in epat_connect()
267 	CPP(0x30);  in epat_disconnect()
275 	int e[2] = { 0, 0 };  in epat_test_proto()
279 	cc = RR(0xd);  in epat_test_proto()
283 	for (j=0;j<2;j++) {  in epat_test_proto()
284 		WRi(6, 0xa0 + j * 0x10);  in epat_test_proto()
285 		for (k = 0; k < 256; k++) {  in epat_test_proto()
286 			WRi(2, k ^ 0xaa);  in epat_test_proto()
287 			WRi(3, k ^ 0x55);  in epat_test_proto()
288 			if (RRi(2) != (k ^ 0xaa))  in epat_test_proto()
294 	f = 0;  in epat_test_proto()
296 	WR(0x13, 1); WR(0x13, 0); WR(0xa, 0x11);  in epat_test_proto()
299 	for (k = 0; k < 256; k++) {  in epat_test_proto()
300 		if ((scratch[2 * k] & 0xff) != k)  in epat_test_proto()
302 		if ((scratch[2 * k + 1] & 0xff) != 0xff - k)  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()
311 	return (e[0] && e[1]) || f;  in epat_test_proto()
321 	WR(0xa, 0x38);		/* read the version code */  in epat_log_adapter()
322 	ver = RR(0xb);  in epat_log_adapter()
326 		 "Shuttle EPAT chip %x at 0x%x, mode %d (%s), delay %d\n",  in epat_log_adapter()