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@@ -1053,6 +1053,341 @@ detect_isa_irq(void __iomem *address)
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}
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#endif /* CONFIG_ISA */
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+static void cyy_intr_chip(struct cyclades_card *cinfo, int chip,
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+ void __iomem *base_addr, int status, int index)
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+{
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+ struct cyclades_port *info;
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+ struct tty_struct *tty;
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+ volatile int char_count;
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+ int i, j, len, mdm_change, mdm_status, outch;
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+ int save_xir, channel, save_car;
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+ char data;
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+
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+ if (status & CySRReceive) { /* reception interrupt */
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+#ifdef CY_DEBUG_INTERRUPTS
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+ printk("cyy_interrupt: rcvd intr, chip %d\n\r", chip);
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+#endif
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+ /* determine the channel & change to that context */
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+ spin_lock(&cinfo->card_lock);
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+ save_xir = (u_char) cy_readb(base_addr+(CyRIR<<index));
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+ channel = (u_short ) (save_xir & CyIRChannel);
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+ i = channel + chip * 4 + cinfo->first_line;
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+ info = &cy_port[i];
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+ info->last_active = jiffies;
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+ save_car = cy_readb(base_addr+(CyCAR<<index));
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+ cy_writeb(base_addr+(CyCAR<<index), save_xir);
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+
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+ /* if there is nowhere to put the data, discard it */
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+ if(info->tty == 0){
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+ j = (cy_readb(base_addr+(CyRIVR<<index)) & CyIVRMask);
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+ if ( j == CyIVRRxEx ) { /* exception */
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+ data = cy_readb(base_addr+(CyRDSR<<index));
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+ } else { /* normal character reception */
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+ char_count = cy_readb(base_addr+(CyRDCR<<index));
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+ while(char_count--){
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+ data = cy_readb(base_addr+(CyRDSR<<index));
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+ }
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+ }
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+ }else{ /* there is an open port for this data */
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+ tty = info->tty;
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+ j = (cy_readb(base_addr+(CyRIVR<<index)) & CyIVRMask);
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+ if ( j == CyIVRRxEx ) { /* exception */
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+ data = cy_readb(base_addr+(CyRDSR<<index));
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+
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+ /* For statistics only */
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+ if (data & CyBREAK)
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+ info->icount.brk++;
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+ else if(data & CyFRAME)
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+ info->icount.frame++;
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+ else if(data & CyPARITY)
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+ info->icount.parity++;
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+ else if(data & CyOVERRUN)
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+ info->icount.overrun++;
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+
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+ if(data & info->ignore_status_mask){
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+ info->icount.rx++;
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+ return;
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+ }
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+ if (tty_buffer_request_room(tty, 1)) {
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+ if (data & info->read_status_mask){
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+ if(data & CyBREAK){
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+ tty_insert_flip_char(tty, cy_readb(base_addr+(CyRDSR<<index)), TTY_BREAK);
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+ info->icount.rx++;
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+ if (info->flags & ASYNC_SAK){
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+ do_SAK(tty);
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+ }
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+ }else if(data & CyFRAME){
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+ tty_insert_flip_char(tty, cy_readb(base_addr+(CyRDSR<<index)), TTY_FRAME);
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+ info->icount.rx++;
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+ info->idle_stats.frame_errs++;
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+ }else if(data & CyPARITY){
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+ /* Pieces of seven... */
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+ tty_insert_flip_char(tty, cy_readb(base_addr+(CyRDSR<<index)), TTY_PARITY);
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+ info->icount.rx++;
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+ info->idle_stats.parity_errs++;
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+ }else if(data & CyOVERRUN){
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+ tty_insert_flip_char(tty, 0, TTY_OVERRUN);
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+ info->icount.rx++;
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+ /* If the flip buffer itself is
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+ overflowing, we still lose
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+ the next incoming character.
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+ */
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+ tty_insert_flip_char(tty, cy_readb(base_addr+(CyRDSR<<index)), TTY_FRAME);
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+ info->icount.rx++;
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+ info->idle_stats.overruns++;
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+ /* These two conditions may imply */
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+ /* a normal read should be done. */
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+ /* }else if(data & CyTIMEOUT){ */
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+ /* }else if(data & CySPECHAR){ */
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+ }else {
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+ tty_insert_flip_char(tty, 0, TTY_NORMAL);
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+ info->icount.rx++;
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+ }
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+ }else{
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+ tty_insert_flip_char(tty, 0, TTY_NORMAL);
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+ info->icount.rx++;
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+ }
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+ }else{
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+ /* there was a software buffer
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+ overrun and nothing could be
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+ done about it!!! */
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+ info->icount.buf_overrun++;
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+ info->idle_stats.overruns++;
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+ }
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+ } else { /* normal character reception */
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+ /* load # chars available from the chip */
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+ char_count = cy_readb(base_addr+(CyRDCR<<index));
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+
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+#ifdef CY_ENABLE_MONITORING
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+ ++info->mon.int_count;
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+ info->mon.char_count += char_count;
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+ if (char_count > info->mon.char_max)
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+ info->mon.char_max = char_count;
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+ info->mon.char_last = char_count;
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+#endif
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+ len = tty_buffer_request_room(tty, char_count);
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+ while(len--){
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+ data = cy_readb(base_addr+(CyRDSR<<index));
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+ tty_insert_flip_char(tty, data, TTY_NORMAL);
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+ info->idle_stats.recv_bytes++;
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+ info->icount.rx++;
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+#ifdef CY_16Y_HACK
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+ udelay(10L);
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+#endif
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+ }
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+ info->idle_stats.recv_idle = jiffies;
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+ }
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+ tty_schedule_flip(tty);
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+ }
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+ /* end of service */
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+ cy_writeb(base_addr+(CyRIR<<index), (save_xir & 0x3f));
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+ cy_writeb(base_addr+(CyCAR<<index), (save_car));
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+ spin_unlock(&cinfo->card_lock);
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+ }
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+
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+
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+ if (status & CySRTransmit) { /* transmission interrupt */
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+ /* Since we only get here when the transmit buffer
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+ is empty, we know we can always stuff a dozen
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+ characters. */
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+#ifdef CY_DEBUG_INTERRUPTS
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+ printk("cyy_interrupt: xmit intr, chip %d\n\r", chip);
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+#endif
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+
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+ /* determine the channel & change to that context */
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+ spin_lock(&cinfo->card_lock);
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+ save_xir = (u_char) cy_readb(base_addr+(CyTIR<<index));
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+ channel = (u_short ) (save_xir & CyIRChannel);
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+ i = channel + chip * 4 + cinfo->first_line;
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+ save_car = cy_readb(base_addr+(CyCAR<<index));
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+ cy_writeb(base_addr+(CyCAR<<index), save_xir);
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+
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+ /* validate the port# (as configured and open) */
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+ if( (i < 0) || (NR_PORTS <= i) ){
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+ cy_writeb(base_addr+(CySRER<<index),
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+ cy_readb(base_addr+(CySRER<<index)) & ~CyTxRdy);
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+ goto txend;
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+ }
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+ info = &cy_port[i];
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+ info->last_active = jiffies;
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+ if(info->tty == 0){
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+ cy_writeb(base_addr+(CySRER<<index),
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+ cy_readb(base_addr+(CySRER<<index)) & ~CyTxRdy);
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+ goto txdone;
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+ }
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+
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+ /* load the on-chip space for outbound data */
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+ char_count = info->xmit_fifo_size;
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+
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+ if(info->x_char) { /* send special char */
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+ outch = info->x_char;
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+ cy_writeb(base_addr+(CyTDR<<index), outch);
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+ char_count--;
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+ info->icount.tx++;
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+ info->x_char = 0;
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+ }
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+
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+ if (info->breakon || info->breakoff) {
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+ if (info->breakon) {
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+ cy_writeb(base_addr + (CyTDR<<index), 0);
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+ cy_writeb(base_addr + (CyTDR<<index), 0x81);
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+ info->breakon = 0;
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+ char_count -= 2;
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+ }
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+ if (info->breakoff) {
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+ cy_writeb(base_addr + (CyTDR<<index), 0);
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+ cy_writeb(base_addr + (CyTDR<<index), 0x83);
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+ info->breakoff = 0;
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+ char_count -= 2;
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+ }
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+ }
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+
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+ while (char_count-- > 0){
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+ if (!info->xmit_cnt){
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+ if (cy_readb(base_addr+(CySRER<<index))&CyTxMpty) {
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+ cy_writeb(base_addr+(CySRER<<index),
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+ cy_readb(base_addr+(CySRER<<index)) &
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+ ~CyTxMpty);
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+ } else {
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+ cy_writeb(base_addr+(CySRER<<index),
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+ ((cy_readb(base_addr+(CySRER<<index))
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+ & ~CyTxRdy)
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+ | CyTxMpty));
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+ }
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+ goto txdone;
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+ }
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+ if (info->xmit_buf == 0){
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+ cy_writeb(base_addr+(CySRER<<index),
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+ cy_readb(base_addr+(CySRER<<index)) &
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+ ~CyTxRdy);
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+ goto txdone;
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+ }
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+ if (info->tty->stopped || info->tty->hw_stopped){
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+ cy_writeb(base_addr+(CySRER<<index),
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+ cy_readb(base_addr+(CySRER<<index)) &
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+ ~CyTxRdy);
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+ goto txdone;
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+ }
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+ /* Because the Embedded Transmit Commands have
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+ been enabled, we must check to see if the
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+ escape character, NULL, is being sent. If it
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+ is, we must ensure that there is room for it
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+ to be doubled in the output stream. Therefore
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+ we no longer advance the pointer when the
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+ character is fetched, but rather wait until
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+ after the check for a NULL output character.
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+ This is necessary because there may not be
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+ room for the two chars needed to send a NULL.)
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+ */
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+ outch = info->xmit_buf[info->xmit_tail];
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+ if( outch ){
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+ info->xmit_cnt--;
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+ info->xmit_tail = (info->xmit_tail + 1)
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+ & (SERIAL_XMIT_SIZE - 1);
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+ cy_writeb(base_addr+(CyTDR<<index), outch);
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+ info->icount.tx++;
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+ }else{
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+ if(char_count > 1){
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+ info->xmit_cnt--;
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+ info->xmit_tail = (info->xmit_tail + 1)
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+ & (SERIAL_XMIT_SIZE - 1);
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+ cy_writeb(base_addr+(CyTDR<<index),
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+ outch);
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+ cy_writeb(base_addr+(CyTDR<<index), 0);
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+ info->icount.tx++;
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+ char_count--;
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+ }else{
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+ }
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+ }
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+ }
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+
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+txdone:
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+ if (info->xmit_cnt < WAKEUP_CHARS) {
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+ cy_sched_event(info, Cy_EVENT_WRITE_WAKEUP);
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+ }
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+txend:
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+ /* end of service */
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+ cy_writeb(base_addr+(CyTIR<<index),
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+ (save_xir & 0x3f));
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+ cy_writeb(base_addr+(CyCAR<<index), (save_car));
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+ spin_unlock(&cinfo->card_lock);
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+ }
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+
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+ if (status & CySRModem) { /* modem interrupt */
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+
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+ /* determine the channel & change to that context */
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+ spin_lock(&cinfo->card_lock);
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+ save_xir = (u_char) cy_readb(base_addr+(CyMIR<<index));
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+ channel = (u_short ) (save_xir & CyIRChannel);
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+ info = &cy_port[channel + chip * 4
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+ + cinfo->first_line];
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+ info->last_active = jiffies;
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+ save_car = cy_readb(base_addr+(CyCAR<<index));
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+ cy_writeb(base_addr+(CyCAR<<index), save_xir);
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+
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+ mdm_change = cy_readb(base_addr+(CyMISR<<index));
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+ mdm_status = cy_readb(base_addr+(CyMSVR1<<index));
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+
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+ if(info->tty == 0){/* no place for data, ignore it*/
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+ ;
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+ }else{
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+ if (mdm_change & CyANY_DELTA) {
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+ /* For statistics only */
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+ if (mdm_change & CyDCD) info->icount.dcd++;
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+ if (mdm_change & CyCTS) info->icount.cts++;
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+ if (mdm_change & CyDSR) info->icount.dsr++;
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+ if (mdm_change & CyRI) info->icount.rng++;
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+
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+ cy_sched_event(info, Cy_EVENT_DELTA_WAKEUP);
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+ }
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+
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+ if((mdm_change & CyDCD)
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+ && (info->flags & ASYNC_CHECK_CD)){
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+ if(mdm_status & CyDCD){
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+ cy_sched_event(info,
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+ Cy_EVENT_OPEN_WAKEUP);
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+ }else{
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+ cy_sched_event(info,
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+ Cy_EVENT_HANGUP);
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+ }
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+ }
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+ if((mdm_change & CyCTS)
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+ && (info->flags & ASYNC_CTS_FLOW)){
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+ if(info->tty->hw_stopped){
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+ if(mdm_status & CyCTS){
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+ /* cy_start isn't used
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+ because... !!! */
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+ info->tty->hw_stopped = 0;
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+ cy_writeb(base_addr+(CySRER<<index),
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+ cy_readb(base_addr+(CySRER<<index)) |
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+ CyTxRdy);
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+ cy_sched_event(info,
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+ Cy_EVENT_WRITE_WAKEUP);
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+ }
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+ }else{
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+ if(!(mdm_status & CyCTS)){
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+ /* cy_stop isn't used
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+ because ... !!! */
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+ info->tty->hw_stopped = 1;
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+ cy_writeb(base_addr+(CySRER<<index),
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+ cy_readb(base_addr+(CySRER<<index)) &
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+ ~CyTxRdy);
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+ }
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+ }
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+ }
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+ if(mdm_change & CyDSR){
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+ }
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+ if(mdm_change & CyRI){
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+ }
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+ }
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+ /* end of service */
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+ cy_writeb(base_addr+(CyMIR<<index),
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+ (save_xir & 0x3f));
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+ cy_writeb(base_addr+(CyCAR<<index), save_car);
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+ spin_unlock(&cinfo->card_lock);
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+ }
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+}
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+
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/* The real interrupt service routine is called
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whenever the card wants its hand held--chars
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received, out buffer empty, modem change, etc.
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@@ -1060,22 +1395,14 @@ detect_isa_irq(void __iomem *address)
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static irqreturn_t
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cyy_interrupt(int irq, void *dev_id)
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{
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- struct tty_struct *tty;
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int status;
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struct cyclades_card *cinfo;
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- struct cyclades_port *info;
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void __iomem *base_addr, *card_base_addr;
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int chip;
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- int save_xir, channel, save_car;
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- char data;
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- volatile int char_count;
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- int outch;
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- int i,j,index;
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+ int index;
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int too_many;
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int had_work;
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- int mdm_change;
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- int mdm_status;
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- int len;
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+
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if((cinfo = (struct cyclades_card *)dev_id) == 0){
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#ifdef CY_DEBUG_INTERRUPTS
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printk("cyy_interrupt: spurious interrupt %d\n\r", irq);
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@@ -1107,331 +1434,9 @@ cyy_interrupt(int irq, void *dev_id)
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if(1000<too_many++){
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break;
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}
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- if (status & CySRReceive) { /* reception interrupt */
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-#ifdef CY_DEBUG_INTERRUPTS
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- printk("cyy_interrupt: rcvd intr, chip %d\n\r", chip);
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-#endif
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- /* determine the channel & change to that context */
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- spin_lock(&cinfo->card_lock);
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- save_xir = (u_char) cy_readb(base_addr+(CyRIR<<index));
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- channel = (u_short ) (save_xir & CyIRChannel);
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- i = channel + chip * 4 + cinfo->first_line;
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- info = &cy_port[i];
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|
|
- info->last_active = jiffies;
|
|
|
- save_car = cy_readb(base_addr+(CyCAR<<index));
|
|
|
- cy_writeb(base_addr+(CyCAR<<index), save_xir);
|
|
|
-
|
|
|
- /* if there is nowhere to put the data, discard it */
|
|
|
- if(info->tty == 0){
|
|
|
- j = (cy_readb(base_addr+(CyRIVR<<index)) & CyIVRMask);
|
|
|
- if ( j == CyIVRRxEx ) { /* exception */
|
|
|
- data = cy_readb(base_addr+(CyRDSR<<index));
|
|
|
- } else { /* normal character reception */
|
|
|
- char_count = cy_readb(base_addr+(CyRDCR<<index));
|
|
|
- while(char_count--){
|
|
|
- data = cy_readb(base_addr+(CyRDSR<<index));
|
|
|
- }
|
|
|
- }
|
|
|
- }else{ /* there is an open port for this data */
|
|
|
- tty = info->tty;
|
|
|
- j = (cy_readb(base_addr+(CyRIVR<<index)) & CyIVRMask);
|
|
|
- if ( j == CyIVRRxEx ) { /* exception */
|
|
|
- data = cy_readb(base_addr+(CyRDSR<<index));
|
|
|
-
|
|
|
- /* For statistics only */
|
|
|
- if (data & CyBREAK)
|
|
|
- info->icount.brk++;
|
|
|
- else if(data & CyFRAME)
|
|
|
- info->icount.frame++;
|
|
|
- else if(data & CyPARITY)
|
|
|
- info->icount.parity++;
|
|
|
- else if(data & CyOVERRUN)
|
|
|
- info->icount.overrun++;
|
|
|
-
|
|
|
- if(data & info->ignore_status_mask){
|
|
|
- info->icount.rx++;
|
|
|
- continue;
|
|
|
- }
|
|
|
- if (tty_buffer_request_room(tty, 1)) {
|
|
|
- if (data & info->read_status_mask){
|
|
|
- if(data & CyBREAK){
|
|
|
- tty_insert_flip_char(tty, cy_readb(base_addr+(CyRDSR<<index)), TTY_BREAK);
|
|
|
- info->icount.rx++;
|
|
|
- if (info->flags & ASYNC_SAK){
|
|
|
- do_SAK(tty);
|
|
|
- }
|
|
|
- }else if(data & CyFRAME){
|
|
|
- tty_insert_flip_char(tty, cy_readb(base_addr+(CyRDSR<<index)), TTY_FRAME);
|
|
|
- info->icount.rx++;
|
|
|
- info->idle_stats.frame_errs++;
|
|
|
- }else if(data & CyPARITY){
|
|
|
- /* Pieces of seven... */
|
|
|
- tty_insert_flip_char(tty, cy_readb(base_addr+(CyRDSR<<index)), TTY_PARITY);
|
|
|
- info->icount.rx++;
|
|
|
- info->idle_stats.parity_errs++;
|
|
|
- }else if(data & CyOVERRUN){
|
|
|
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
|
|
|
- info->icount.rx++;
|
|
|
- /* If the flip buffer itself is
|
|
|
- overflowing, we still lose
|
|
|
- the next incoming character.
|
|
|
- */
|
|
|
- tty_insert_flip_char(tty, cy_readb(base_addr+(CyRDSR<<index)), TTY_FRAME);
|
|
|
- info->icount.rx++;
|
|
|
- info->idle_stats.overruns++;
|
|
|
- /* These two conditions may imply */
|
|
|
- /* a normal read should be done. */
|
|
|
- /* }else if(data & CyTIMEOUT){ */
|
|
|
- /* }else if(data & CySPECHAR){ */
|
|
|
- }else {
|
|
|
- tty_insert_flip_char(tty, 0, TTY_NORMAL);
|
|
|
- info->icount.rx++;
|
|
|
- }
|
|
|
- }else{
|
|
|
- tty_insert_flip_char(tty, 0, TTY_NORMAL);
|
|
|
- info->icount.rx++;
|
|
|
- }
|
|
|
- }else{
|
|
|
- /* there was a software buffer
|
|
|
- overrun and nothing could be
|
|
|
- done about it!!! */
|
|
|
- info->icount.buf_overrun++;
|
|
|
- info->idle_stats.overruns++;
|
|
|
- }
|
|
|
- } else { /* normal character reception */
|
|
|
- /* load # chars available from the chip */
|
|
|
- char_count = cy_readb(base_addr+(CyRDCR<<index));
|
|
|
-
|
|
|
-#ifdef CY_ENABLE_MONITORING
|
|
|
- ++info->mon.int_count;
|
|
|
- info->mon.char_count += char_count;
|
|
|
- if (char_count > info->mon.char_max)
|
|
|
- info->mon.char_max = char_count;
|
|
|
- info->mon.char_last = char_count;
|
|
|
-#endif
|
|
|
- len = tty_buffer_request_room(tty, char_count);
|
|
|
- while(len--){
|
|
|
- data = cy_readb(base_addr+(CyRDSR<<index));
|
|
|
- tty_insert_flip_char(tty, data, TTY_NORMAL);
|
|
|
- info->idle_stats.recv_bytes++;
|
|
|
- info->icount.rx++;
|
|
|
-#ifdef CY_16Y_HACK
|
|
|
- udelay(10L);
|
|
|
-#endif
|
|
|
- }
|
|
|
- info->idle_stats.recv_idle = jiffies;
|
|
|
- }
|
|
|
- tty_schedule_flip(tty);
|
|
|
- }
|
|
|
- /* end of service */
|
|
|
- cy_writeb(base_addr+(CyRIR<<index), (save_xir & 0x3f));
|
|
|
- cy_writeb(base_addr+(CyCAR<<index), (save_car));
|
|
|
- spin_unlock(&cinfo->card_lock);
|
|
|
- }
|
|
|
-
|
|
|
-
|
|
|
- if (status & CySRTransmit) { /* transmission interrupt */
|
|
|
- /* Since we only get here when the transmit buffer
|
|
|
- is empty, we know we can always stuff a dozen
|
|
|
- characters. */
|
|
|
-#ifdef CY_DEBUG_INTERRUPTS
|
|
|
- printk("cyy_interrupt: xmit intr, chip %d\n\r", chip);
|
|
|
-#endif
|
|
|
-
|
|
|
- /* determine the channel & change to that context */
|
|
|
- spin_lock(&cinfo->card_lock);
|
|
|
- save_xir = (u_char) cy_readb(base_addr+(CyTIR<<index));
|
|
|
- channel = (u_short ) (save_xir & CyIRChannel);
|
|
|
- i = channel + chip * 4 + cinfo->first_line;
|
|
|
- save_car = cy_readb(base_addr+(CyCAR<<index));
|
|
|
- cy_writeb(base_addr+(CyCAR<<index), save_xir);
|
|
|
-
|
|
|
- /* validate the port# (as configured and open) */
|
|
|
- if( (i < 0) || (NR_PORTS <= i) ){
|
|
|
- cy_writeb(base_addr+(CySRER<<index),
|
|
|
- cy_readb(base_addr+(CySRER<<index)) & ~CyTxRdy);
|
|
|
- goto txend;
|
|
|
- }
|
|
|
- info = &cy_port[i];
|
|
|
- info->last_active = jiffies;
|
|
|
- if(info->tty == 0){
|
|
|
- cy_writeb(base_addr+(CySRER<<index),
|
|
|
- cy_readb(base_addr+(CySRER<<index)) & ~CyTxRdy);
|
|
|
- goto txdone;
|
|
|
- }
|
|
|
-
|
|
|
- /* load the on-chip space for outbound data */
|
|
|
- char_count = info->xmit_fifo_size;
|
|
|
-
|
|
|
- if(info->x_char) { /* send special char */
|
|
|
- outch = info->x_char;
|
|
|
- cy_writeb(base_addr+(CyTDR<<index), outch);
|
|
|
- char_count--;
|
|
|
- info->icount.tx++;
|
|
|
- info->x_char = 0;
|
|
|
- }
|
|
|
-
|
|
|
- if (info->breakon || info->breakoff) {
|
|
|
- if (info->breakon) {
|
|
|
- cy_writeb(base_addr + (CyTDR<<index), 0);
|
|
|
- cy_writeb(base_addr + (CyTDR<<index), 0x81);
|
|
|
- info->breakon = 0;
|
|
|
- char_count -= 2;
|
|
|
- }
|
|
|
- if (info->breakoff) {
|
|
|
- cy_writeb(base_addr + (CyTDR<<index), 0);
|
|
|
- cy_writeb(base_addr + (CyTDR<<index), 0x83);
|
|
|
- info->breakoff = 0;
|
|
|
- char_count -= 2;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- while (char_count-- > 0){
|
|
|
- if (!info->xmit_cnt){
|
|
|
- if (cy_readb(base_addr+(CySRER<<index))&CyTxMpty) {
|
|
|
- cy_writeb(base_addr+(CySRER<<index),
|
|
|
- cy_readb(base_addr+(CySRER<<index)) &
|
|
|
- ~CyTxMpty);
|
|
|
- } else {
|
|
|
- cy_writeb(base_addr+(CySRER<<index),
|
|
|
- ((cy_readb(base_addr+(CySRER<<index))
|
|
|
- & ~CyTxRdy)
|
|
|
- | CyTxMpty));
|
|
|
- }
|
|
|
- goto txdone;
|
|
|
- }
|
|
|
- if (info->xmit_buf == 0){
|
|
|
- cy_writeb(base_addr+(CySRER<<index),
|
|
|
- cy_readb(base_addr+(CySRER<<index)) &
|
|
|
- ~CyTxRdy);
|
|
|
- goto txdone;
|
|
|
- }
|
|
|
- if (info->tty->stopped || info->tty->hw_stopped){
|
|
|
- cy_writeb(base_addr+(CySRER<<index),
|
|
|
- cy_readb(base_addr+(CySRER<<index)) &
|
|
|
- ~CyTxRdy);
|
|
|
- goto txdone;
|
|
|
- }
|
|
|
- /* Because the Embedded Transmit Commands have
|
|
|
- been enabled, we must check to see if the
|
|
|
- escape character, NULL, is being sent. If it
|
|
|
- is, we must ensure that there is room for it
|
|
|
- to be doubled in the output stream. Therefore
|
|
|
- we no longer advance the pointer when the
|
|
|
- character is fetched, but rather wait until
|
|
|
- after the check for a NULL output character.
|
|
|
- This is necessary because there may not be
|
|
|
- room for the two chars needed to send a NULL.)
|
|
|
- */
|
|
|
- outch = info->xmit_buf[info->xmit_tail];
|
|
|
- if( outch ){
|
|
|
- info->xmit_cnt--;
|
|
|
- info->xmit_tail = (info->xmit_tail + 1)
|
|
|
- & (SERIAL_XMIT_SIZE - 1);
|
|
|
- cy_writeb(base_addr+(CyTDR<<index), outch);
|
|
|
- info->icount.tx++;
|
|
|
- }else{
|
|
|
- if(char_count > 1){
|
|
|
- info->xmit_cnt--;
|
|
|
- info->xmit_tail = (info->xmit_tail + 1)
|
|
|
- & (SERIAL_XMIT_SIZE - 1);
|
|
|
- cy_writeb(base_addr+(CyTDR<<index),
|
|
|
- outch);
|
|
|
- cy_writeb(base_addr+(CyTDR<<index), 0);
|
|
|
- info->icount.tx++;
|
|
|
- char_count--;
|
|
|
- }else{
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- txdone:
|
|
|
- if (info->xmit_cnt < WAKEUP_CHARS) {
|
|
|
- cy_sched_event(info, Cy_EVENT_WRITE_WAKEUP);
|
|
|
- }
|
|
|
- txend:
|
|
|
- /* end of service */
|
|
|
- cy_writeb(base_addr+(CyTIR<<index),
|
|
|
- (save_xir & 0x3f));
|
|
|
- cy_writeb(base_addr+(CyCAR<<index), (save_car));
|
|
|
- spin_unlock(&cinfo->card_lock);
|
|
|
- }
|
|
|
-
|
|
|
- if (status & CySRModem) { /* modem interrupt */
|
|
|
-
|
|
|
- /* determine the channel & change to that context */
|
|
|
- spin_lock(&cinfo->card_lock);
|
|
|
- save_xir = (u_char) cy_readb(base_addr+(CyMIR<<index));
|
|
|
- channel = (u_short ) (save_xir & CyIRChannel);
|
|
|
- info = &cy_port[channel + chip * 4
|
|
|
- + cinfo->first_line];
|
|
|
- info->last_active = jiffies;
|
|
|
- save_car = cy_readb(base_addr+(CyCAR<<index));
|
|
|
- cy_writeb(base_addr+(CyCAR<<index), save_xir);
|
|
|
-
|
|
|
- mdm_change = cy_readb(base_addr+(CyMISR<<index));
|
|
|
- mdm_status = cy_readb(base_addr+(CyMSVR1<<index));
|
|
|
-
|
|
|
- if(info->tty == 0){/* no place for data, ignore it*/
|
|
|
- ;
|
|
|
- }else{
|
|
|
- if (mdm_change & CyANY_DELTA) {
|
|
|
- /* For statistics only */
|
|
|
- if (mdm_change & CyDCD) info->icount.dcd++;
|
|
|
- if (mdm_change & CyCTS) info->icount.cts++;
|
|
|
- if (mdm_change & CyDSR) info->icount.dsr++;
|
|
|
- if (mdm_change & CyRI) info->icount.rng++;
|
|
|
-
|
|
|
- cy_sched_event(info, Cy_EVENT_DELTA_WAKEUP);
|
|
|
- }
|
|
|
-
|
|
|
- if((mdm_change & CyDCD)
|
|
|
- && (info->flags & ASYNC_CHECK_CD)){
|
|
|
- if(mdm_status & CyDCD){
|
|
|
- cy_sched_event(info,
|
|
|
- Cy_EVENT_OPEN_WAKEUP);
|
|
|
- }else{
|
|
|
- cy_sched_event(info,
|
|
|
- Cy_EVENT_HANGUP);
|
|
|
- }
|
|
|
- }
|
|
|
- if((mdm_change & CyCTS)
|
|
|
- && (info->flags & ASYNC_CTS_FLOW)){
|
|
|
- if(info->tty->hw_stopped){
|
|
|
- if(mdm_status & CyCTS){
|
|
|
- /* cy_start isn't used
|
|
|
- because... !!! */
|
|
|
- info->tty->hw_stopped = 0;
|
|
|
- cy_writeb(base_addr+(CySRER<<index),
|
|
|
- cy_readb(base_addr+(CySRER<<index)) |
|
|
|
- CyTxRdy);
|
|
|
- cy_sched_event(info,
|
|
|
- Cy_EVENT_WRITE_WAKEUP);
|
|
|
- }
|
|
|
- }else{
|
|
|
- if(!(mdm_status & CyCTS)){
|
|
|
- /* cy_stop isn't used
|
|
|
- because ... !!! */
|
|
|
- info->tty->hw_stopped = 1;
|
|
|
- cy_writeb(base_addr+(CySRER<<index),
|
|
|
- cy_readb(base_addr+(CySRER<<index)) &
|
|
|
- ~CyTxRdy);
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- if(mdm_change & CyDSR){
|
|
|
- }
|
|
|
- if(mdm_change & CyRI){
|
|
|
- }
|
|
|
- }
|
|
|
- /* end of service */
|
|
|
- cy_writeb(base_addr+(CyMIR<<index),
|
|
|
- (save_xir & 0x3f));
|
|
|
- cy_writeb(base_addr+(CyCAR<<index), save_car);
|
|
|
- spin_unlock(&cinfo->card_lock);
|
|
|
- }
|
|
|
- } /* end while status != 0 */
|
|
|
- } /* end loop for chips... */
|
|
|
+ cyy_intr_chip(cinfo, chip, base_addr, status, index);
|
|
|
+ }
|
|
|
+ }
|
|
|
} while(had_work);
|
|
|
|
|
|
/* clear interrupts */
|