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path: root/drivers/char/cyclades.c
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Diffstat (limited to 'drivers/char/cyclades.c')
-rw-r--r--drivers/char/cyclades.c617
1 files changed, 292 insertions, 325 deletions
diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c
index 817fef3071a..39bfe043fba 100644
--- a/drivers/char/cyclades.c
+++ b/drivers/char/cyclades.c
@@ -980,378 +980,342 @@ static unsigned detect_isa_irq(void __iomem * address)
980} 980}
981#endif /* CONFIG_ISA */ 981#endif /* CONFIG_ISA */
982 982
983static void cyy_intr_chip(struct cyclades_card *cinfo, int chip, 983static void cyy_chip_rx(struct cyclades_card *cinfo, int chip,
984 void __iomem * base_addr, int status, int index) 984 void __iomem *base_addr)
985{ 985{
986 struct cyclades_port *info; 986 struct cyclades_port *info;
987 struct tty_struct *tty; 987 struct tty_struct *tty;
988 int char_count; 988 int char_count;
989 int j, len, mdm_change, mdm_status, outch; 989 int j, len, index = cinfo->bus_index;
990 int save_xir, channel, save_car; 990 int save_xir, channel, save_car;
991 char data; 991 char data;
992 992
993 if (status & CySRReceive) { /* reception interrupt */
994#ifdef CY_DEBUG_INTERRUPTS 993#ifdef CY_DEBUG_INTERRUPTS
995 printk(KERN_DEBUG "cyy_interrupt: rcvd intr, chip %d\n", chip); 994 printk(KERN_DEBUG "cyy_interrupt: rcvd intr, chip %d\n", chip);
996#endif 995#endif
997 /* determine the channel & change to that context */ 996 /* determine the channel & change to that context */
998 spin_lock(&cinfo->card_lock); 997 spin_lock(&cinfo->card_lock);
999 save_xir = (u_char) readb(base_addr + (CyRIR << index)); 998 save_xir = (u_char) readb(base_addr + (CyRIR << index));
1000 channel = (u_short) (save_xir & CyIRChannel); 999 channel = (u_short) (save_xir & CyIRChannel);
1001 info = &cinfo->ports[channel + chip * 4]; 1000 info = &cinfo->ports[channel + chip * 4];
1002 save_car = readb(base_addr + (CyCAR << index)); 1001 save_car = readb(base_addr + (CyCAR << index));
1003 cy_writeb(base_addr + (CyCAR << index), save_xir); 1002 cy_writeb(base_addr + (CyCAR << index), save_xir);
1004 1003
1005 /* if there is nowhere to put the data, discard it */ 1004 /* if there is nowhere to put the data, discard it */
1006 if (info->tty == NULL) { 1005 if (info->tty == NULL) {
1007 j = (readb(base_addr + (CyRIVR << index)) & 1006 j = (readb(base_addr + (CyRIVR << index)) & CyIVRMask);
1008 CyIVRMask); 1007 if (j == CyIVRRxEx) { /* exception */
1009 if (j == CyIVRRxEx) { /* exception */ 1008 data = readb(base_addr + (CyRDSR << index));
1010 data = readb(base_addr + (CyRDSR << index)); 1009 } else { /* normal character reception */
1011 } else { /* normal character reception */ 1010 char_count = readb(base_addr + (CyRDCR << index));
1012 char_count = readb(base_addr + 1011 while (char_count--)
1013 (CyRDCR << index));
1014 while (char_count--) {
1015 data = readb(base_addr +
1016 (CyRDSR << index));
1017 }
1018 }
1019 } else { /* there is an open port for this data */
1020 tty = info->tty;
1021 j = (readb(base_addr + (CyRIVR << index)) &
1022 CyIVRMask);
1023 if (j == CyIVRRxEx) { /* exception */
1024 data = readb(base_addr + (CyRDSR << index)); 1012 data = readb(base_addr + (CyRDSR << index));
1025 1013 }
1026 /* For statistics only */ 1014 goto end;
1027 if (data & CyBREAK) 1015 }
1028 info->icount.brk++; 1016 /* there is an open port for this data */
1029 else if (data & CyFRAME) 1017 tty = info->tty;
1030 info->icount.frame++; 1018 j = readb(base_addr + (CyRIVR << index)) & CyIVRMask;
1031 else if (data & CyPARITY) 1019 if (j == CyIVRRxEx) { /* exception */
1032 info->icount.parity++; 1020 data = readb(base_addr + (CyRDSR << index));
1033 else if (data & CyOVERRUN) 1021
1034 info->icount.overrun++; 1022 /* For statistics only */
1035 1023 if (data & CyBREAK)
1036 if (data & info->ignore_status_mask) { 1024 info->icount.brk++;
1025 else if (data & CyFRAME)
1026 info->icount.frame++;
1027 else if (data & CyPARITY)
1028 info->icount.parity++;
1029 else if (data & CyOVERRUN)
1030 info->icount.overrun++;
1031
1032 if (data & info->ignore_status_mask) {
1033 info->icount.rx++;
1034 spin_unlock(&cinfo->card_lock);
1035 return;
1036 }
1037 if (tty_buffer_request_room(tty, 1)) {
1038 if (data & info->read_status_mask) {
1039 if (data & CyBREAK) {
1040 tty_insert_flip_char(tty,
1041 readb(base_addr + (CyRDSR <<
1042 index)), TTY_BREAK);
1043 info->icount.rx++;
1044 if (info->flags & ASYNC_SAK)
1045 do_SAK(tty);
1046 } else if (data & CyFRAME) {
1047 tty_insert_flip_char( tty,
1048 readb(base_addr + (CyRDSR <<
1049 index)), TTY_FRAME);
1050 info->icount.rx++;
1051 info->idle_stats.frame_errs++;
1052 } else if (data & CyPARITY) {
1053 /* Pieces of seven... */
1054 tty_insert_flip_char(tty,
1055 readb(base_addr + (CyRDSR <<
1056 index)), TTY_PARITY);
1057 info->icount.rx++;
1058 info->idle_stats.parity_errs++;
1059 } else if (data & CyOVERRUN) {
1060 tty_insert_flip_char(tty, 0,
1061 TTY_OVERRUN);
1062 info->icount.rx++;
1063 /* If the flip buffer itself is
1064 overflowing, we still lose
1065 the next incoming character.
1066 */
1067 tty_insert_flip_char(tty,
1068 readb(base_addr + (CyRDSR <<
1069 index)), TTY_FRAME);
1037 info->icount.rx++; 1070 info->icount.rx++;
1038 spin_unlock(&cinfo->card_lock);
1039 return;
1040 }
1041 if (tty_buffer_request_room(tty, 1)) {
1042 if (data & info->read_status_mask) {
1043 if (data & CyBREAK) {
1044 tty_insert_flip_char(
1045 tty,
1046 readb(
1047 base_addr +
1048 (CyRDSR <<
1049 index)),
1050 TTY_BREAK);
1051 info->icount.rx++;
1052 if (info->flags &
1053 ASYNC_SAK) {
1054 do_SAK(tty);
1055 }
1056 } else if (data & CyFRAME) {
1057 tty_insert_flip_char(
1058 tty,
1059 readb(
1060 base_addr +
1061 (CyRDSR <<
1062 index)),
1063 TTY_FRAME);
1064 info->icount.rx++;
1065 info->idle_stats.
1066 frame_errs++;
1067 } else if (data & CyPARITY) {
1068 /* Pieces of seven... */
1069 tty_insert_flip_char(
1070 tty,
1071 readb(
1072 base_addr +
1073 (CyRDSR <<
1074 index)),
1075 TTY_PARITY);
1076 info->icount.rx++;
1077 info->idle_stats.
1078 parity_errs++;
1079 } else if (data & CyOVERRUN) {
1080 tty_insert_flip_char(
1081 tty, 0,
1082 TTY_OVERRUN);
1083 info->icount.rx++;
1084 /* If the flip buffer itself is
1085 overflowing, we still lose
1086 the next incoming character.
1087 */
1088 tty_insert_flip_char(
1089 tty,
1090 readb(
1091 base_addr +
1092 (CyRDSR <<
1093 index)),
1094 TTY_FRAME);
1095 info->icount.rx++;
1096 info->idle_stats.
1097 overruns++;
1098 /* These two conditions may imply */
1099 /* a normal read should be done. */
1100 /* }else if(data & CyTIMEOUT){ */
1101 /* }else if(data & CySPECHAR){ */
1102 } else {
1103 tty_insert_flip_char(
1104 tty, 0,
1105 TTY_NORMAL);
1106 info->icount.rx++;
1107 }
1108 } else {
1109 tty_insert_flip_char(tty, 0,
1110 TTY_NORMAL);
1111 info->icount.rx++;
1112 }
1113 } else {
1114 /* there was a software buffer
1115 overrun and nothing could be
1116 done about it!!! */
1117 info->icount.buf_overrun++;
1118 info->idle_stats.overruns++; 1071 info->idle_stats.overruns++;
1072 /* These two conditions may imply */
1073 /* a normal read should be done. */
1074 /* } else if(data & CyTIMEOUT) { */
1075 /* } else if(data & CySPECHAR) { */
1076 } else {
1077 tty_insert_flip_char(tty, 0,
1078 TTY_NORMAL);
1079 info->icount.rx++;
1119 } 1080 }
1120 } else { /* normal character reception */ 1081 } else {
1121 /* load # chars available from the chip */ 1082 tty_insert_flip_char(tty, 0, TTY_NORMAL);
1122 char_count = readb(base_addr + 1083 info->icount.rx++;
1123 (CyRDCR << index)); 1084 }
1085 } else {
1086 /* there was a software buffer overrun and nothing
1087 * could be done about it!!! */
1088 info->icount.buf_overrun++;
1089 info->idle_stats.overruns++;
1090 }
1091 } else { /* normal character reception */
1092 /* load # chars available from the chip */
1093 char_count = readb(base_addr + (CyRDCR << index));
1124 1094
1125#ifdef CY_ENABLE_MONITORING 1095#ifdef CY_ENABLE_MONITORING
1126 ++info->mon.int_count; 1096 ++info->mon.int_count;
1127 info->mon.char_count += char_count; 1097 info->mon.char_count += char_count;
1128 if (char_count > info->mon.char_max) 1098 if (char_count > info->mon.char_max)
1129 info->mon.char_max = char_count; 1099 info->mon.char_max = char_count;
1130 info->mon.char_last = char_count; 1100 info->mon.char_last = char_count;
1131#endif 1101#endif
1132 len = tty_buffer_request_room(tty, char_count); 1102 len = tty_buffer_request_room(tty, char_count);
1133 while (len--) { 1103 while (len--) {
1134 data = readb(base_addr + 1104 data = readb(base_addr + (CyRDSR << index));
1135 (CyRDSR << index)); 1105 tty_insert_flip_char(tty, data, TTY_NORMAL);
1136 tty_insert_flip_char(tty, data, 1106 info->idle_stats.recv_bytes++;
1137 TTY_NORMAL); 1107 info->icount.rx++;
1138 info->idle_stats.recv_bytes++;
1139 info->icount.rx++;
1140#ifdef CY_16Y_HACK 1108#ifdef CY_16Y_HACK
1141 udelay(10L); 1109 udelay(10L);
1142#endif 1110#endif
1143 }
1144 info->idle_stats.recv_idle = jiffies;
1145 }
1146 tty_schedule_flip(tty);
1147 } 1111 }
1148 /* end of service */ 1112 info->idle_stats.recv_idle = jiffies;
1149 cy_writeb(base_addr + (CyRIR << index), (save_xir & 0x3f));
1150 cy_writeb(base_addr + (CyCAR << index), (save_car));
1151 spin_unlock(&cinfo->card_lock);
1152 } 1113 }
1114 tty_schedule_flip(tty);
1115end:
1116 /* end of service */
1117 cy_writeb(base_addr + (CyRIR << index), save_xir & 0x3f);
1118 cy_writeb(base_addr + (CyCAR << index), save_car);
1119 spin_unlock(&cinfo->card_lock);
1120}
1121
1122static void cyy_chip_tx(struct cyclades_card *cinfo, int chip,
1123 void __iomem *base_addr)
1124{
1125 struct cyclades_port *info;
1126 int char_count;
1127 int outch;
1128 int save_xir, channel, save_car, index = cinfo->bus_index;
1153 1129
1154 if (status & CySRTransmit) { /* transmission interrupt */ 1130 /* Since we only get here when the transmit buffer
1155 /* Since we only get here when the transmit buffer 1131 is empty, we know we can always stuff a dozen
1156 is empty, we know we can always stuff a dozen 1132 characters. */
1157 characters. */
1158#ifdef CY_DEBUG_INTERRUPTS 1133#ifdef CY_DEBUG_INTERRUPTS
1159 printk(KERN_DEBUG "cyy_interrupt: xmit intr, chip %d\n", chip); 1134 printk(KERN_DEBUG "cyy_interrupt: xmit intr, chip %d\n", chip);
1160#endif 1135#endif
1161 1136
1162 /* determine the channel & change to that context */ 1137 /* determine the channel & change to that context */
1163 spin_lock(&cinfo->card_lock); 1138 spin_lock(&cinfo->card_lock);
1164 save_xir = (u_char) readb(base_addr + (CyTIR << index)); 1139 save_xir = (u_char) readb(base_addr + (CyTIR << index));
1165 channel = (u_short) (save_xir & CyIRChannel); 1140 channel = (u_short) (save_xir & CyIRChannel);
1166 save_car = readb(base_addr + (CyCAR << index)); 1141 save_car = readb(base_addr + (CyCAR << index));
1167 cy_writeb(base_addr + (CyCAR << index), save_xir); 1142 cy_writeb(base_addr + (CyCAR << index), save_xir);
1168 1143
1169 /* validate the port# (as configured and open) */ 1144 /* validate the port# (as configured and open) */
1170 if (channel + chip * 4 >= cinfo->nports) { 1145 if (channel + chip * 4 >= cinfo->nports) {
1171 cy_writeb(base_addr + (CySRER << index), 1146 cy_writeb(base_addr + (CySRER << index),
1172 readb(base_addr + (CySRER << index)) & 1147 readb(base_addr + (CySRER << index)) & ~CyTxRdy);
1173 ~CyTxRdy); 1148 goto end;
1174 goto txend; 1149 }
1175 } 1150 info = &cinfo->ports[channel + chip * 4];
1176 info = &cinfo->ports[channel + chip * 4]; 1151 if (info->tty == NULL) {
1177 if (info->tty == NULL) { 1152 cy_writeb(base_addr + (CySRER << index),
1178 cy_writeb(base_addr + (CySRER << index), 1153 readb(base_addr + (CySRER << index)) & ~CyTxRdy);
1179 readb(base_addr + (CySRER << index)) & 1154 goto end;
1180 ~CyTxRdy); 1155 }
1181 goto txend;
1182 }
1183 1156
1184 /* load the on-chip space for outbound data */ 1157 /* load the on-chip space for outbound data */
1185 char_count = info->xmit_fifo_size; 1158 char_count = info->xmit_fifo_size;
1186 1159
1187 if (info->x_char) { /* send special char */ 1160 if (info->x_char) { /* send special char */
1188 outch = info->x_char; 1161 outch = info->x_char;
1189 cy_writeb(base_addr + (CyTDR << index), outch); 1162 cy_writeb(base_addr + (CyTDR << index), outch);
1190 char_count--; 1163 char_count--;
1191 info->icount.tx++; 1164 info->icount.tx++;
1192 info->x_char = 0; 1165 info->x_char = 0;
1193 } 1166 }
1194 1167
1195 if (info->breakon || info->breakoff) { 1168 if (info->breakon || info->breakoff) {
1196 if (info->breakon) { 1169 if (info->breakon) {
1197 cy_writeb(base_addr + (CyTDR << index), 0); 1170 cy_writeb(base_addr + (CyTDR << index), 0);
1198 cy_writeb(base_addr + (CyTDR << index), 0x81); 1171 cy_writeb(base_addr + (CyTDR << index), 0x81);
1199 info->breakon = 0; 1172 info->breakon = 0;
1200 char_count -= 2; 1173 char_count -= 2;
1201 } 1174 }
1202 if (info->breakoff) { 1175 if (info->breakoff) {
1203 cy_writeb(base_addr + (CyTDR << index), 0); 1176 cy_writeb(base_addr + (CyTDR << index), 0);
1204 cy_writeb(base_addr + (CyTDR << index), 0x83); 1177 cy_writeb(base_addr + (CyTDR << index), 0x83);
1205 info->breakoff = 0; 1178 info->breakoff = 0;
1206 char_count -= 2; 1179 char_count -= 2;
1207 }
1208 } 1180 }
1181 }
1209 1182
1210 while (char_count-- > 0) { 1183 while (char_count-- > 0) {
1211 if (!info->xmit_cnt) { 1184 if (!info->xmit_cnt) {
1212 if (readb(base_addr + (CySRER << index)) & 1185 if (readb(base_addr + (CySRER << index)) & CyTxMpty) {
1213 CyTxMpty) { 1186 cy_writeb(base_addr + (CySRER << index),
1214 cy_writeb(base_addr + (CySRER << index), 1187 readb(base_addr + (CySRER << index)) &
1215 readb(base_addr +
1216 (CySRER << index)) &
1217 ~CyTxMpty); 1188 ~CyTxMpty);
1218 } else { 1189 } else {
1219 cy_writeb(base_addr + (CySRER << index), 1190 cy_writeb(base_addr + (CySRER << index),
1220 (readb(base_addr + 1191 (readb(base_addr + (CySRER << index)) &
1221 (CySRER << index)) &
1222 ~CyTxRdy) | CyTxMpty); 1192 ~CyTxRdy) | CyTxMpty);
1223 }
1224 goto txdone;
1225 } 1193 }
1226 if (info->xmit_buf == NULL) { 1194 goto done;
1227 cy_writeb(base_addr + (CySRER << index), 1195 }
1228 readb(base_addr + (CySRER << index)) & 1196 if (info->xmit_buf == NULL) {
1197 cy_writeb(base_addr + (CySRER << index),
1198 readb(base_addr + (CySRER << index)) &
1229 ~CyTxRdy); 1199 ~CyTxRdy);
1230 goto txdone; 1200 goto done;
1231 } 1201 }
1232 if (info->tty->stopped || info->tty->hw_stopped) { 1202 if (info->tty->stopped || info->tty->hw_stopped) {
1233 cy_writeb(base_addr + (CySRER << index), 1203 cy_writeb(base_addr + (CySRER << index),
1234 readb(base_addr + (CySRER << index)) & 1204 readb(base_addr + (CySRER << index)) &
1235 ~CyTxRdy); 1205 ~CyTxRdy);
1236 goto txdone; 1206 goto done;
1237 } 1207 }
1238 /* Because the Embedded Transmit Commands have 1208 /* Because the Embedded Transmit Commands have been enabled,
1239 been enabled, we must check to see if the 1209 * we must check to see if the escape character, NULL, is being
1240 escape character, NULL, is being sent. If it 1210 * sent. If it is, we must ensure that there is room for it to
1241 is, we must ensure that there is room for it 1211 * be doubled in the output stream. Therefore we no longer
1242 to be doubled in the output stream. Therefore 1212 * advance the pointer when the character is fetched, but
1243 we no longer advance the pointer when the 1213 * rather wait until after the check for a NULL output
1244 character is fetched, but rather wait until 1214 * character. This is necessary because there may not be room
1245 after the check for a NULL output character. 1215 * for the two chars needed to send a NULL.)
1246 This is necessary because there may not be 1216 */
1247 room for the two chars needed to send a NULL.) 1217 outch = info->xmit_buf[info->xmit_tail];
1248 */ 1218 if (outch) {
1249 outch = info->xmit_buf[info->xmit_tail]; 1219 info->xmit_cnt--;
1250 if (outch) { 1220 info->xmit_tail = (info->xmit_tail + 1) &
1221 (SERIAL_XMIT_SIZE - 1);
1222 cy_writeb(base_addr + (CyTDR << index), outch);
1223 info->icount.tx++;
1224 } else {
1225 if (char_count > 1) {
1251 info->xmit_cnt--; 1226 info->xmit_cnt--;
1252 info->xmit_tail = (info->xmit_tail + 1) & 1227 info->xmit_tail = (info->xmit_tail + 1) &
1253 (SERIAL_XMIT_SIZE - 1); 1228 (SERIAL_XMIT_SIZE - 1);
1254 cy_writeb(base_addr + (CyTDR << index), outch); 1229 cy_writeb(base_addr + (CyTDR << index), outch);
1230 cy_writeb(base_addr + (CyTDR << index), 0);
1255 info->icount.tx++; 1231 info->icount.tx++;
1256 } else { 1232 char_count--;
1257 if (char_count > 1) {
1258 info->xmit_cnt--;
1259 info->xmit_tail = (info->xmit_tail + 1)&
1260 (SERIAL_XMIT_SIZE - 1);
1261 cy_writeb(base_addr + (CyTDR << index),
1262 outch);
1263 cy_writeb(base_addr + (CyTDR << index),
1264 0);
1265 info->icount.tx++;
1266 char_count--;
1267 }
1268 } 1233 }
1269 } 1234 }
1270
1271txdone:
1272 tty_wakeup(info->tty);
1273txend:
1274 /* end of service */
1275 cy_writeb(base_addr + (CyTIR << index), (save_xir & 0x3f));
1276 cy_writeb(base_addr + (CyCAR << index), (save_car));
1277 spin_unlock(&cinfo->card_lock);
1278 } 1235 }
1279 1236
1280 if (status & CySRModem) { /* modem interrupt */ 1237done:
1238 tty_wakeup(info->tty);
1239end:
1240 /* end of service */
1241 cy_writeb(base_addr + (CyTIR << index), save_xir & 0x3f);
1242 cy_writeb(base_addr + (CyCAR << index), save_car);
1243 spin_unlock(&cinfo->card_lock);
1244}
1245
1246static void cyy_chip_modem(struct cyclades_card *cinfo, int chip,
1247 void __iomem *base_addr)
1248{
1249 struct cyclades_port *info;
1250 int mdm_change, mdm_status;
1251 int save_xir, channel, save_car, index = cinfo->bus_index;
1281 1252
1282 /* determine the channel & change to that context */ 1253 /* determine the channel & change to that context */
1283 spin_lock(&cinfo->card_lock); 1254 spin_lock(&cinfo->card_lock);
1284 save_xir = (u_char) readb(base_addr + (CyMIR << index)); 1255 save_xir = (u_char) readb(base_addr + (CyMIR << index));
1285 channel = (u_short) (save_xir & CyIRChannel); 1256 channel = (u_short) (save_xir & CyIRChannel);
1286 info = &cinfo->ports[channel + chip * 4]; 1257 info = &cinfo->ports[channel + chip * 4];
1287 save_car = readb(base_addr + (CyCAR << index)); 1258 save_car = readb(base_addr + (CyCAR << index));
1288 cy_writeb(base_addr + (CyCAR << index), save_xir); 1259 cy_writeb(base_addr + (CyCAR << index), save_xir);
1289 1260
1290 mdm_change = readb(base_addr + (CyMISR << index)); 1261 mdm_change = readb(base_addr + (CyMISR << index));
1291 mdm_status = readb(base_addr + (CyMSVR1 << index)); 1262 mdm_status = readb(base_addr + (CyMSVR1 << index));
1292 1263
1293 if (info->tty) { 1264 if (!info->tty)
1294 if (mdm_change & CyANY_DELTA) { 1265 goto end;
1295 /* For statistics only */
1296 if (mdm_change & CyDCD)
1297 info->icount.dcd++;
1298 if (mdm_change & CyCTS)
1299 info->icount.cts++;
1300 if (mdm_change & CyDSR)
1301 info->icount.dsr++;
1302 if (mdm_change & CyRI)
1303 info->icount.rng++;
1304
1305 wake_up_interruptible(&info->delta_msr_wait);
1306 }
1307 1266
1308 if ((mdm_change & CyDCD) && 1267 if (mdm_change & CyANY_DELTA) {
1309 (info->flags & ASYNC_CHECK_CD)) { 1268 /* For statistics only */
1310 if (!(mdm_status & CyDCD)) { 1269 if (mdm_change & CyDCD)
1311 tty_hangup(info->tty); 1270 info->icount.dcd++;
1312 info->flags &= ~ASYNC_NORMAL_ACTIVE; 1271 if (mdm_change & CyCTS)
1313 } 1272 info->icount.cts++;
1314 wake_up_interruptible(&info->open_wait); 1273 if (mdm_change & CyDSR)
1315 } 1274 info->icount.dsr++;
1316 if ((mdm_change & CyCTS) && 1275 if (mdm_change & CyRI)
1317 (info->flags & ASYNC_CTS_FLOW)) { 1276 info->icount.rng++;
1318 if (info->tty->hw_stopped) { 1277
1319 if (mdm_status & CyCTS) { 1278 wake_up_interruptible(&info->delta_msr_wait);
1320 /* cy_start isn't used 1279 }
1321 because... !!! */ 1280
1322 info->tty->hw_stopped = 0; 1281 if ((mdm_change & CyDCD) && (info->flags & ASYNC_CHECK_CD)) {
1323 cy_writeb(base_addr + 1282 if (!(mdm_status & CyDCD)) {
1324 (CySRER << index), 1283 tty_hangup(info->tty);
1325 readb(base_addr + 1284 info->flags &= ~ASYNC_NORMAL_ACTIVE;
1326 (CySRER << 1285 }
1327 index))| 1286 wake_up_interruptible(&info->open_wait);
1328 CyTxRdy); 1287 }
1329 tty_wakeup(info->tty); 1288 if ((mdm_change & CyCTS) && (info->flags & ASYNC_CTS_FLOW)) {
1330 } 1289 if (info->tty->hw_stopped) {
1331 } else { 1290 if (mdm_status & CyCTS) {
1332 if (!(mdm_status & CyCTS)) { 1291 /* cy_start isn't used
1333 /* cy_stop isn't used 1292 because... !!! */
1334 because ... !!! */ 1293 info->tty->hw_stopped = 0;
1335 info->tty->hw_stopped = 1; 1294 cy_writeb(base_addr + (CySRER << index),
1336 cy_writeb(base_addr + 1295 readb(base_addr + (CySRER << index)) |
1337 (CySRER << index), 1296 CyTxRdy);
1338 readb(base_addr + 1297 tty_wakeup(info->tty);
1339 (CySRER <<
1340 index)) &
1341 ~CyTxRdy);
1342 }
1343 }
1344 } 1298 }
1345/* if (mdm_change & CyDSR) { 1299 } else {
1300 if (!(mdm_status & CyCTS)) {
1301 /* cy_stop isn't used
1302 because ... !!! */
1303 info->tty->hw_stopped = 1;
1304 cy_writeb(base_addr + (CySRER << index),
1305 readb(base_addr + (CySRER << index)) &
1306 ~CyTxRdy);
1346 } 1307 }
1347 if (mdm_change & CyRI) {
1348 }*/
1349 } 1308 }
1350 /* end of service */
1351 cy_writeb(base_addr + (CyMIR << index), (save_xir & 0x3f));
1352 cy_writeb(base_addr + (CyCAR << index), save_car);
1353 spin_unlock(&cinfo->card_lock);
1354 } 1309 }
1310/* if (mdm_change & CyDSR) {
1311 }
1312 if (mdm_change & CyRI) {
1313 }*/
1314end:
1315 /* end of service */
1316 cy_writeb(base_addr + (CyMIR << index), save_xir & 0x3f);
1317 cy_writeb(base_addr + (CyCAR << index), save_car);
1318 spin_unlock(&cinfo->card_lock);
1355} 1319}
1356 1320
1357/* The real interrupt service routine is called 1321/* The real interrupt service routine is called
@@ -1401,11 +1365,14 @@ static irqreturn_t cyy_interrupt(int irq, void *dev_id)
1401 chips to be checked in a round-robin fashion (after 1365 chips to be checked in a round-robin fashion (after
1402 draining each of a bunch (1000) of characters). 1366 draining each of a bunch (1000) of characters).
1403 */ 1367 */
1404 if (1000 < too_many++) { 1368 if (1000 < too_many++)
1405 break; 1369 break;
1406 } 1370 if (status & CySRReceive) /* rx intr */
1407 cyy_intr_chip(cinfo, chip, base_addr, status, 1371 cyy_chip_rx(cinfo, chip, base_addr);
1408 index); 1372 if (status & CySRTransmit) /* tx intr */
1373 cyy_chip_tx(cinfo, chip, base_addr);
1374 if (status & CySRModem) /* modem intr */
1375 cyy_chip_modem(cinfo, chip, base_addr);
1409 } 1376 }
1410 } 1377 }
1411 } while (had_work); 1378 } while (had_work);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-18 16:05:54 -0500