scsi/aic7xxx/aic7xxx_93cx6.c

95 #define CLOCK_PULSE(sd, rdy)				\
96 	while ((SEEPROM_STATUS_INB(sd) & rdy) == 0) {	\
99 	(void)SEEPROM_INB(sd);	/* Clear clock */
105 send_seeprom_cmd(struct seeprom_descriptor *sd, const struct seeprom_cmd *cmd)
111 	temp = sd->sd_MS ^ sd->sd_CS;
112 	SEEPROM_OUTB(sd, temp ^ sd->sd_CK);
113 	CLOCK_PULSE(sd, sd->sd_RDY);
117 			temp ^= sd->sd_DO;
118 		SEEPROM_OUTB(sd, temp);
119 		CLOCK_PULSE(sd, sd->sd_RDY);
120 		SEEPROM_OUTB(sd, temp ^ sd->sd_CK);
121 		CLOCK_PULSE(sd, sd->sd_RDY);
123 			temp ^= sd->sd_DO;
131 reset_seeprom(struct seeprom_descriptor *sd)
135 	temp = sd->sd_MS;
136 	SEEPROM_OUTB(sd, temp);
137 	CLOCK_PULSE(sd, sd->sd_RDY);
138 	SEEPROM_OUTB(sd, temp ^ sd->sd_CK);
139 	CLOCK_PULSE(sd, sd->sd_RDY);
140 	SEEPROM_OUTB(sd, temp);
141 	CLOCK_PULSE(sd, sd->sd_RDY);
149 ahc_read_seeprom(struct seeprom_descriptor *sd, uint16_t *buf,
166 		send_seeprom_cmd(sd, &seeprom_read);
169 		temp = sd->sd_MS ^ sd->sd_CS;
170 		for (i = (sd->sd_chip - 1); i >= 0; i--) {
172 				temp ^= sd->sd_DO;
173 			SEEPROM_OUTB(sd, temp);
174 			CLOCK_PULSE(sd, sd->sd_RDY);
175 			SEEPROM_OUTB(sd, temp ^ sd->sd_CK);
176 			CLOCK_PULSE(sd, sd->sd_RDY);
178 				temp ^= sd->sd_DO;
189 			SEEPROM_OUTB(sd, temp);
190 			CLOCK_PULSE(sd, sd->sd_RDY);
192 			if (SEEPROM_DATA_INB(sd) & sd->sd_DI)
194 			SEEPROM_OUTB(sd, temp ^ sd->sd_CK);
195 			CLOCK_PULSE(sd, sd->sd_RDY);
201 		reset_seeprom(sd);
221 ahc_write_seeprom(struct seeprom_descriptor *sd, uint16_t *buf,
230 	if (sd->sd_chip == C46) {
233 	} else if (sd->sd_chip == C56_66) {
238 		       sd->sd_chip);
242 	send_seeprom_cmd(sd, ewen);
243 	reset_seeprom(sd);
246 	temp = sd->sd_MS ^ sd->sd_CS;
249 		send_seeprom_cmd(sd, &seeprom_write);
252 		for (i = (sd->sd_chip - 1); i >= 0; i--) {
254 				temp ^= sd->sd_DO;
255 			SEEPROM_OUTB(sd, temp);
256 			CLOCK_PULSE(sd, sd->sd_RDY);
257 			SEEPROM_OUTB(sd, temp ^ sd->sd_CK);
258 			CLOCK_PULSE(sd, sd->sd_RDY);
260 				temp ^= sd->sd_DO;
267 				temp ^= sd->sd_DO;
268 			SEEPROM_OUTB(sd, temp);
269 			CLOCK_PULSE(sd, sd->sd_RDY);
270 			SEEPROM_OUTB(sd, temp ^ sd->sd_CK);
271 			CLOCK_PULSE(sd, sd->sd_RDY);
273 				temp ^= sd->sd_DO;
277 		temp = sd->sd_MS;
278 		SEEPROM_OUTB(sd, temp);
279 		CLOCK_PULSE(sd, sd->sd_RDY);
280 		temp = sd->sd_MS ^ sd->sd_CS;
282 			SEEPROM_OUTB(sd, temp);
283 			CLOCK_PULSE(sd, sd->sd_RDY);
284 			SEEPROM_OUTB(sd, temp ^ sd->sd_CK);
285 			CLOCK_PULSE(sd, sd->sd_RDY);
286 		} while ((SEEPROM_DATA_INB(sd) & sd->sd_DI) == 0);
288 		reset_seeprom(sd);
292 	send_seeprom_cmd(sd, ewds);
293 	reset_seeprom(sd);