31  * memory and a serial device (long pipes, no. 0-15) or between two serial
32  * devices (short pipes, no. 16-31), or simply send a fixed data to a serial
33  * device (short pipes).
36  * each serial device (NT,TE,CHI). A timeslot is associated to 1 or 2 pipes
312 	struct dbri_pipe pipes[DBRI_NO_PIPES];	/* DBRI's 32 data pipes */  member
363 #define D_PAUSE		0x1	/* Flush long pipes */
420 #define D_TS_ANCHOR	(7<<10)	/* Starting short pipes */
574  * Short data pipes transmit LSB first. The CS4215 receives MSB first. Grrr.
767 	/* Initialize pipes */  in dbri_initialize()
769 		dbri->pipes[n].desc = dbri->pipes[n].first_desc = -1;  in dbri_initialize()
803 main data path takes the form of data pipes, which can be short (command
805 provide a rudimentary means of setting up and managing the DBRI's pipes,
806 but the calling functions have to make sure they respect the pipes' linked
813 	return ((pipe >= 0) && (dbri->pipes[pipe].desc != -1));  in pipe_active()
833 	sdp = dbri->pipes[pipe].sdp;  in reset_pipe()
846 	desc = dbri->pipes[pipe].first_desc;  in reset_pipe()
852 		} while (desc != -1 && desc != dbri->pipes[pipe].first_desc);  in reset_pipe()
854 	dbri->pipes[pipe].desc = -1;  in reset_pipe()
855 	dbri->pipes[pipe].first_desc = -1;  in reset_pipe()
882 	dbri->pipes[pipe].sdp = sdp;  in setup_pipe()
883 	dbri->pipes[pipe].desc = -1;  in setup_pipe()
884 	dbri->pipes[pipe].first_desc = -1;  in setup_pipe()
907 	if (dbri->pipes[pipe].sdp == 0  in link_time_slot()
908 			|| dbri->pipes[prevpipe].sdp == 0  in link_time_slot()
909 			|| dbri->pipes[nextpipe].sdp == 0) {  in link_time_slot()
915 	dbri->pipes[prevpipe].nextpipe = pipe;  in link_time_slot()
916 	dbri->pipes[pipe].nextpipe = nextpipe;  in link_time_slot()
917 	dbri->pipes[pipe].length = length;  in link_time_slot()
921 	if (dbri->pipes[pipe].sdp & D_SDP_TO_SER) {  in link_time_slot()
989  * The DBRI only interrupts us when the data changes (receive pipes),
990  * or only changes the data when this function is called (transmit pipes).
991  * Only short pipes (numbers 16-31) can be used in fixed data mode.
1011 	if (D_SDP_MODE(dbri->pipes[pipe].sdp) == 0) {  in xmit_fixed()
1017 	if (D_SDP_MODE(dbri->pipes[pipe].sdp) != D_SDP_FIXED) {  in xmit_fixed()
1022 	if (!(dbri->pipes[pipe].sdp & D_SDP_TO_SER)) {  in xmit_fixed()
1028 	/* DBRI short pipes always transmit LSB first */  in xmit_fixed()
1030 	if (dbri->pipes[pipe].sdp & D_SDP_MSB)  in xmit_fixed()
1031 		data = reverse_bytes(data, dbri->pipes[pipe].length);  in xmit_fixed()
1054 	if (D_SDP_MODE(dbri->pipes[pipe].sdp) != D_SDP_FIXED) {  in recv_fixed()
1060 	if (dbri->pipes[pipe].sdp & D_SDP_TO_SER) {  in recv_fixed()
1066 	dbri->pipes[pipe].recv_fixed_ptr = ptr;  in recv_fixed()
1100 	if (dbri->pipes[info->pipe].sdp == 0) {  in setup_descs()
1110 		if (!(dbri->pipes[info->pipe].sdp & D_SDP_TO_SER)) {  in setup_descs()
1116 		if (dbri->pipes[info->pipe].sdp & D_SDP_TO_SER) {  in setup_descs()
1136 	desc = dbri->pipes[info->pipe].first_desc;  in setup_descs()
1143 			 desc != dbri->pipes[info->pipe].first_desc);  in setup_descs()
1145 	dbri->pipes[info->pipe].desc = -1;  in setup_descs()
1146 	dbri->pipes[info->pipe].first_desc = -1;  in setup_descs()
1206 	dbri->pipes[info->pipe].first_desc = first_desc;  in setup_descs()
1207 	dbri->pipes[info->pipe].desc = first_desc;  in setup_descs()
1258 	dbri->pipes[16].sdp = 1;  in reset_chi()
1259 	dbri->pipes[16].nextpipe = 16;  in reset_chi()
1722 		first_td = dbri->pipes[info->pipe].first_desc;  in xmit_descs()
1730 					    dbri->pipes[info->pipe].sdp  in xmit_descs()
1737 			dbri->pipes[info->pipe].desc = first_td;  in xmit_descs()
1744 		first_td = dbri->pipes[info->pipe].first_desc;  in xmit_descs()
1752 					    dbri->pipes[info->pipe].sdp  in xmit_descs()
1759 			dbri->pipes[info->pipe].desc = first_td;  in xmit_descs()
1783 	int td = dbri->pipes[pipe].desc;  in transmission_complete_intr()
1802 		dbri->pipes[pipe].desc = td;  in transmission_complete_intr()
1814 	int rd = dbri->pipes[pipe].desc;  in reception_complete_intr()
1822 	dbri->pipes[pipe].desc = dbri->next_desc[rd];  in reception_complete_intr()
1880 			int td = dbri->pipes[pipe].desc;  in dbri_process_one_interrupt()
1885 					    dbri->pipes[pipe].sdp  in dbri_process_one_interrupt()
1894 		if (dbri->pipes[channel].sdp & D_SDP_MSB)  in dbri_process_one_interrupt()
1895 			val = reverse_bytes(val, dbri->pipes[channel].length);  in dbri_process_one_interrupt()
1897 		if (dbri->pipes[channel].recv_fixed_ptr)  in dbri_process_one_interrupt()
1898 			*(dbri->pipes[channel].recv_fixed_ptr) = val;  in dbri_process_one_interrupt()
2490 			struct dbri_pipe *pptr = &dbri->pipes[pipe];  in dbri_debug_read()