dev/aic7xxx/aic7xxx_93cx6.c

103 #define CLOCK_PULSE(sd, rdy)				\
104 	while ((SEEPROM_STATUS_INB(sd) & rdy) == 0) {	\
107 	(void)SEEPROM_INB(sd);	/* Clear clock */
113 send_seeprom_cmd(struct seeprom_descriptor *sd, struct seeprom_cmd *cmd)
119 	temp = sd->sd_MS ^ sd->sd_CS;
120 	SEEPROM_OUTB(sd, temp ^ sd->sd_CK);
121 	CLOCK_PULSE(sd, sd->sd_RDY);
125 			temp ^= sd->sd_DO;
126 		SEEPROM_OUTB(sd, temp);
127 		CLOCK_PULSE(sd, sd->sd_RDY);
128 		SEEPROM_OUTB(sd, temp ^ sd->sd_CK);
129 		CLOCK_PULSE(sd, sd->sd_RDY);
131 			temp ^= sd->sd_DO;
139 reset_seeprom(struct seeprom_descriptor *sd)
143 	temp = sd->sd_MS;
144 	SEEPROM_OUTB(sd, temp);
145 	CLOCK_PULSE(sd, sd->sd_RDY);
146 	SEEPROM_OUTB(sd, temp ^ sd->sd_CK);
147 	CLOCK_PULSE(sd, sd->sd_RDY);
148 	SEEPROM_OUTB(sd, temp);
149 	CLOCK_PULSE(sd, sd->sd_RDY);
157 ahc_read_seeprom(struct seeprom_descriptor *sd, uint16_t *buf,
174 		send_seeprom_cmd(sd, &seeprom_read);
177 		temp = sd->sd_MS ^ sd->sd_CS;
178 		for (i = (sd->sd_chip - 1); i >= 0; i--) {
180 				temp ^= sd->sd_DO;
181 			SEEPROM_OUTB(sd, temp);
182 			CLOCK_PULSE(sd, sd->sd_RDY);
183 			SEEPROM_OUTB(sd, temp ^ sd->sd_CK);
184 			CLOCK_PULSE(sd, sd->sd_RDY);
186 				temp ^= sd->sd_DO;
197 			SEEPROM_OUTB(sd, temp);
198 			CLOCK_PULSE(sd, sd->sd_RDY);
200 			if (SEEPROM_DATA_INB(sd) & sd->sd_DI)
202 			SEEPROM_OUTB(sd, temp ^ sd->sd_CK);
203 			CLOCK_PULSE(sd, sd->sd_RDY);
209 		reset_seeprom(sd);
229 ahc_write_seeprom(struct seeprom_descriptor *sd, uint16_t *buf,
238 	if (sd->sd_chip == C46) {
241 	} else if (sd->sd_chip == C56_66) {
246 		       sd->sd_chip);
250 	send_seeprom_cmd(sd, ewen);
251 	reset_seeprom(sd);
254 	temp = sd->sd_MS ^ sd->sd_CS;
257 		send_seeprom_cmd(sd, &seeprom_write);
260 		for (i = (sd->sd_chip - 1); i >= 0; i--) {
262 				temp ^= sd->sd_DO;
263 			SEEPROM_OUTB(sd, temp);
264 			CLOCK_PULSE(sd, sd->sd_RDY);
265 			SEEPROM_OUTB(sd, temp ^ sd->sd_CK);
266 			CLOCK_PULSE(sd, sd->sd_RDY);
268 				temp ^= sd->sd_DO;
275 				temp ^= sd->sd_DO;
276 			SEEPROM_OUTB(sd, temp);
277 			CLOCK_PULSE(sd, sd->sd_RDY);
278 			SEEPROM_OUTB(sd, temp ^ sd->sd_CK);
279 			CLOCK_PULSE(sd, sd->sd_RDY);
281 				temp ^= sd->sd_DO;
285 		temp = sd->sd_MS;
286 		SEEPROM_OUTB(sd, temp);
287 		CLOCK_PULSE(sd, sd->sd_RDY);
288 		temp = sd->sd_MS ^ sd->sd_CS;
290 			SEEPROM_OUTB(sd, temp);
291 			CLOCK_PULSE(sd, sd->sd_RDY);
292 			SEEPROM_OUTB(sd, temp ^ sd->sd_CK);
293 			CLOCK_PULSE(sd, sd->sd_RDY);
294 		} while ((SEEPROM_DATA_INB(sd) & sd->sd_DI) == 0);
296 		reset_seeprom(sd);
300 	send_seeprom_cmd(sd, ewds);
301 	reset_seeprom(sd);