28 #define IMM_PROBE_SPP   0x0001
29 #define IMM_PROBE_PS2   0x0002
30 #define IMM_PROBE_ECR   0x0010
31 #define IMM_PROBE_EPP17 0x0100
32 #define IMM_PROBE_EPP19 0x0200
60 MODULE_PARM_DESC(mode, "Transfer mode (0 = Autodetect, 1 = SPP 4-bit, "
86 		if (parport_claim(dev->dev) == 0) {  in imm_wakeup()
88 			dev->wanted = 0;  in imm_wakeup()
99 	if (parport_claim(dev->dev) == 0) {  in imm_pb_claim()
101 		res = 0;  in imm_pb_claim()
114 	dev->wanted = 0;  in imm_pb_dismiss()
126  * parameters) by writing to the /proc/scsi/imm/0 file.
136 	if ((length > 5) && (strncmp(buffer, "mode=", 5) == 0)) {  in imm_write_info()
137 		dev->mode = simple_strtoul(buffer + 5, NULL, 0);  in imm_write_info()
151 	return 0;  in imm_show_info()
154 #if IMM_DEBUG > 0
176  * the 0x80 ready bit. 
184 	w_ctr(ppb, 0x0c);  in imm_wait()
192 	while (!(r & 0x80) && (k));  in imm_wait()
199 	 * 0x80     S_REQ   S_REQ  in imm_wait()
200 	 * 0x40     !S_BSY  (????)  in imm_wait()
201 	 * 0x20     !S_CD   !S_CD  in imm_wait()
202 	 * 0x10     !S_IO   !S_IO  in imm_wait()
203 	 * 0x08     (????)  !S_BSY  in imm_wait()
207 	 * 0xf0     0xb8    Bit mask  in imm_wait()
208 	 * 0xc0     0x88    ZIP wants more data  in imm_wait()
209 	 * 0xd0     0x98    ZIP wants to send more data  in imm_wait()
210 	 * 0xe0     0xa8    ZIP is expecting SCSI command data  in imm_wait()
211 	 * 0xf0     0xb8    end of transfer, ZIP is sending status  in imm_wait()
213 	w_ctr(ppb, 0x04);  in imm_wait()
215 		return (r & 0xb8);  in imm_wait()
220 	return 0;		/* command timed out */  in imm_wait()
233 	 * Return 0 if data available  in imm_negotiate()
242 		mode = 0x00;  in imm_negotiate()
245 		mode = 0x01;  in imm_negotiate()
248 		return 0;  in imm_negotiate()
251 	w_ctr(base, 0x04);  in imm_negotiate()
255 	w_ctr(base, 0x06);  in imm_negotiate()
257 	a = (r_str(base) & 0x20) ? 0 : 1;  in imm_negotiate()
259 	w_ctr(base, 0x07);  in imm_negotiate()
261 	w_ctr(base, 0x06);  in imm_negotiate()
280 	w_str(ppb, i & 0xfe);  in epp_reset()
290 	if (ppb_hi == 0)  in ecp_sync()
293 	if ((r_ecr(ppb_hi) & 0xe0) == 0x60) {	/* mode 011 == ECP fifo mode */  in ecp_sync()
294 		for (i = 0; i < 100; i++) {  in ecp_sync()
295 			if (r_ecr(ppb_hi) & 0x01)  in ecp_sync()
307 	w_ctr(base, 0x4);	/* apparently a sane mode */  in imm_byte_out()
310 		w_ctr(base, 0x5);	/* Drop STROBE low */  in imm_byte_out()
312 		w_ctr(base, 0x0);	/* STROBE high + INIT low */  in imm_byte_out()
314 	w_ctr(base, 0x4);	/* apparently a sane mode */  in imm_byte_out()
326 	w_ctr(base, 0x4);  in imm_nibble_in()
328 		w_ctr(base, 0x6);  in imm_nibble_in()
329 		l = (r_str(base) & 0xf0) >> 4;  in imm_nibble_in()
330 		w_ctr(base, 0x5);  in imm_nibble_in()
331 		*buffer++ = (r_str(base) & 0xf0) | l;  in imm_nibble_in()
332 		w_ctr(base, 0x4);  in imm_nibble_in()
344 	w_ctr(base, 0x4);  in imm_byte_in()
346 		w_ctr(base, 0x26);  in imm_byte_in()
348 		w_ctr(base, 0x25);  in imm_byte_in()
363 	if ((r & 0x18) != 0x08) {  in imm_out()
366 		return 0;  in imm_out()
373 		w_ctr(ppb, 0x4);  in imm_out()
374 		if (dev->mode == IMM_EPP_32 && !(((long) buffer | len) & 0x03))  in imm_out()
376 		else if (dev->mode == IMM_EPP_16 && !(((long) buffer | len) & 0x01))  in imm_out()
380 		w_ctr(ppb, 0xc);  in imm_out()
381 		r = !(r_str(ppb) & 0x01);  in imm_out()
382 		w_ctr(ppb, 0xc);  in imm_out()
394 		r = 0;  in imm_out()
409 	if ((r & 0x18) != 0x18) {  in imm_in()
411 		return 0;  in imm_in()
417 		w_ctr(ppb, 0xc);  in imm_in()
423 		w_ctr(ppb, 0xc);  in imm_in()
430 		w_ctr(ppb, 0x24);  in imm_in()
431 		if (dev->mode == IMM_EPP_32 && !(((long) buffer | len) & 0x03))  in imm_in()
433 		else if (dev->mode == IMM_EPP_16 && !(((long) buffer | len) & 0x01))  in imm_in()
437 		w_ctr(ppb, 0x2c);  in imm_in()
438 		r = !(r_str(ppb) & 0x01);  in imm_in()
439 		w_ctr(ppb, 0x2c);  in imm_in()
445 		r = 0;  in imm_in()
459 	w_ctr(ppb, 0x0c);  in imm_cpp()
461 	w_dtr(ppb, 0xaa);  in imm_cpp()
463 	w_dtr(ppb, 0x55);  in imm_cpp()
465 	w_dtr(ppb, 0x00);  in imm_cpp()
467 	w_dtr(ppb, 0xff);  in imm_cpp()
469 	s1 = r_str(ppb) & 0xb8;  in imm_cpp()
470 	w_dtr(ppb, 0x87);  in imm_cpp()
472 	s2 = r_str(ppb) & 0xb8;  in imm_cpp()
473 	w_dtr(ppb, 0x78);  in imm_cpp()
475 	s3 = r_str(ppb) & 0x38;  in imm_cpp()
488 	w_ctr(ppb, 0x0c);  in imm_cpp()
490 	w_ctr(ppb, 0x0d);  in imm_cpp()
492 	w_ctr(ppb, 0x0c);  in imm_cpp()
494 	w_dtr(ppb, 0xff);  in imm_cpp()
502 	 * S1    0    X    1    1    1  in imm_cpp()
503 	 * S2    1    X    0    1    1  in imm_cpp()
513 	if ((s1 == 0xb8) && (s2 == 0x18) && (s3 == 0x30))  in imm_cpp()
515 	if ((s1 == 0xb8) && (s2 == 0x18) && (s3 == 0x38))  in imm_cpp()
516 		return 0;	/* Disconnected */  in imm_cpp()
525 	imm_cpp(ppb, 0xe0);	/* Select device 0 in compatible mode */  in imm_connect()
526 	imm_cpp(ppb, 0x30);	/* Disconnect all devices */  in imm_connect()
531 		return imm_cpp(ppb, 0x28);	/* Select device 0 in EPP mode */  in imm_connect()
532 	return imm_cpp(ppb, 0xe0);	/* Select device 0 in compatible mode */  in imm_connect()
537 	imm_cpp(dev->base, 0x30);	/* Disconnect all devices */  in imm_disconnect()
549 	w_ctr(ppb, 0xc);  in imm_select()
554 	} while ((r_str(ppb) & 0x08) && (k));  in imm_select()
557 		return 0;  in imm_select()
562 	w_ctr(ppb, 0x4);  in imm_select()
563 	w_dtr(ppb, 0x80 | (1 << target));  in imm_select()
569 	w_ctr(ppb, 0xc);  in imm_select()
570 	w_ctr(ppb, 0xd);  in imm_select()
580 	while (!(r_str(ppb) & 0x08) && (k));  in imm_select()
585 	w_ctr(ppb, 0xc);  in imm_select()
586 	return (k) ? 1 : 0;  in imm_select()
605 	if (imm_connect(dev, 0) != 1)  in imm_init()
621 	for (k = 0; k < cmd->cmd_len; k += 2)  in imm_send_command()
623 			return 0;  in imm_send_command()
639 	 *  0     Told to schedule  in imm_completion()
650 	v = cmd->cmnd[0];  in imm_completion()
658 	w_ctr(ppb, 0x0c);  in imm_completion()
659 	r = (r_str(ppb) & 0xb8);  in imm_completion()
665 	while (r != (unsigned char) 0xb8) {  in imm_completion()
671 			return 0;  in imm_completion()
678 		if ((r & 0x88) != 0x88 || scsi_pointer->this_residual <= 0) {  in imm_completion()
683 		if (dev->rd == 0) {  in imm_completion()
713 				if (scsi_pointer->this_residual & 0x01)  in imm_completion()
718 		w_ctr(ppb, 0x0c);  in imm_completion()
719 		r = (r_str(ppb) & 0xb8);  in imm_completion()
722 		if (!(r & 0x80))  in imm_completion()
723 			return 0;  in imm_completion()
745 #if IMM_DEBUG > 0  in imm_interrupt()
746 	switch ((cmd->result >> 16) & 0xff) {  in imm_interrupt()
775 		       (cmd->result >> 16) & 0xff);  in imm_interrupt()
795 	unsigned char l = 0, h = 0;  in imm_engine()
802 		return 0;  in imm_engine()
805 	case 0:		/* Phase 0 - Waiting for parport */  in imm_engine()
812 			return 0;  in imm_engine()
824 			return 0;  in imm_engine()
830 		w_ctr(ppb, 0x0c);  in imm_engine()
831 		if (!(r_str(ppb) & 0x80))  in imm_engine()
835 			return 0;  in imm_engine()
846 			scsi_pointer->this_residual = 0;  in imm_engine()
851 		if (scsi_pointer->this_residual & 0x01)  in imm_engine()
857 		w_ctr(ppb, 0x0c);  in imm_engine()
858 		if (!(r_str(ppb) & 0x80))  in imm_engine()
862 		x = (r_str(ppb) & 0xb8);  in imm_engine()
863 		dev->rd = (x & 0x10) ? 1 : 0;  in imm_engine()
864 		dev->dp = (x & 0x20) ? 0 : 1;  in imm_engine()
868 				return 0;  in imm_engine()
874 		w_ctr(ppb, 0x0c);  in imm_engine()
875 		if (!(r_str(ppb) & 0x80))  in imm_engine()
881 				return 0;  in imm_engine()
882 			if (retv == 0)  in imm_engine()
891 				w_ctr(ppb, 0x4);  in imm_engine()
892 				w_ctr(ppb, 0xc);  in imm_engine()
893 				w_ctr(ppb, 0xe);  in imm_engine()
894 				w_ctr(ppb, 0x4);  in imm_engine()
902 		if (imm_wait(dev) != (unsigned char) 0xb8) {  in imm_engine()
904 			return 0;  in imm_engine()
907 			return 0;  in imm_engine()
910 			if (imm_wait(dev) == (unsigned char) 0xb8)  in imm_engine()
915 			w_ctr(ppb, 0x4);  in imm_engine()
916 			w_ctr(ppb, 0xc);  in imm_engine()
917 			w_ctr(ppb, 0xe);  in imm_engine()
918 			w_ctr(ppb, 0x4);  in imm_engine()
920 		return 0;	/* Finished */  in imm_engine()
925 	return 0;  in imm_engine()
934 		return 0;  in imm_queuecommand_lck()
936 	dev->failed = 0;  in imm_queuecommand_lck()
940 	imm_scsi_pointer(cmd)->phase = 0;	/* bus free */  in imm_queuecommand_lck()
942 	schedule_delayed_work(&dev->imm_tq, 0);  in imm_queuecommand_lck()
946 	return 0;  in imm_queuecommand_lck()
960 	ip[0] = 0x40;  in DEF_SCSI_QCMD()
961 	ip[1] = 0x20;  in DEF_SCSI_QCMD()
962 	ip[2] = ((unsigned long) capacity + 1) / (ip[0] * ip[1]);  in DEF_SCSI_QCMD()
964 		ip[0] = 0xff;  in DEF_SCSI_QCMD()
965 		ip[1] = 0x3f;  in DEF_SCSI_QCMD()
966 		ip[2] = ((unsigned long) capacity + 1) / (ip[0] * ip[1]);  in DEF_SCSI_QCMD()
968 	return 0;  in DEF_SCSI_QCMD()
980 	case 0:		/* Do not have access to parport */  in imm_abort()
991 	w_ctr(base, 0x04);  in imm_reset_pulse()
992 	w_dtr(base, 0x40);  in imm_reset_pulse()
994 	w_ctr(base, 0x0c);  in imm_reset_pulse()
995 	w_ctr(base, 0x0d);  in imm_reset_pulse()
997 	w_ctr(base, 0x0c);  in imm_reset_pulse()
998 	w_ctr(base, 0x04);  in imm_reset_pulse()
1022 	static char cmd[6] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };  in device_check()
1027 	for (loop = 0; loop < 8; loop++) {  in device_check()
1029 		if (autodetect && (ppb & 0x0007) == 0x0000)  in device_check()
1044 		w_ctr(ppb, 0x0c);  in device_check()
1045 		for (l = 0; (l < 3) && (status); l++)  in device_check()
1062 		w_ctr(ppb, 0x0c);  in device_check()
1069 		} while (!(l & 0x80) && (k));  in device_check()
1071 		l &= 0xb8;  in device_check()
1073 		if (l != 0xb8) {  in device_check()
1090 		    ("imm: Communication established at 0x%x with ID %i using %s\n",  in device_check()
1097 		return 0;  in device_check()
1134 	unsigned int cnt = 0;  in find_parent()
1174 	memset(&imm_cb, 0, sizeof(imm_cb));  in __imm_attach()
1204 	w_ctr(dev->base, 0x0c);  in __imm_attach()
1242 	return 0;  in __imm_attach()