[PATCH] Char: cyclades, save indent levels
Save 3 indent levels in interrupt routine by moving the code to a separate function. This needs to be done to allow Lindent do its work, since only 4 columns are used for indenting now and hence Lindent makes a big mess in the code, when moves it 4*5 columns to the right. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jiri Slaby
Linus Torvalds
parent
ff8efe978d
commit
e941027f53
1 changed files with 340 additions and 335 deletions
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@ -1053,6 +1053,341 @@ detect_isa_irq(void __iomem *address)
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}
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}
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#endif /* CONFIG_ISA */
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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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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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/* 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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/* 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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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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#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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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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/* 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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/* 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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/* load the on-chip space for outbound data */
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char_count = info->xmit_fifo_size;
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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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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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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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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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if (status & CySRModem) { /* modem interrupt */
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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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mdm_change = cy_readb(base_addr+(CyMISR<<index));
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mdm_status = cy_readb(base_addr+(CyMSVR1<<index));
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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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cy_sched_event(info, Cy_EVENT_DELTA_WAKEUP);
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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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/* The real interrupt service routine is called
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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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whenever the card wants its hand held--chars
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received, out buffer empty, modem change, etc.
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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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static irqreturn_t
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cyy_interrupt(int irq, void *dev_id)
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cyy_interrupt(int irq, void *dev_id)
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{
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{
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struct tty_struct *tty;
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int status;
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int status;
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struct cyclades_card *cinfo;
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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;
|
void __iomem *base_addr, *card_base_addr;
|
||||||
int chip;
|
int chip;
|
||||||
int save_xir, channel, save_car;
|
int index;
|
||||||
char data;
|
|
||||||
volatile int char_count;
|
|
||||||
int outch;
|
|
||||||
int i,j,index;
|
|
||||||
int too_many;
|
int too_many;
|
||||||
int had_work;
|
int had_work;
|
||||||
int mdm_change;
|
|
||||||
int mdm_status;
|
|
||||||
int len;
|
|
||||||
if((cinfo = (struct cyclades_card *)dev_id) == 0){
|
if((cinfo = (struct cyclades_card *)dev_id) == 0){
|
||||||
#ifdef CY_DEBUG_INTERRUPTS
|
#ifdef CY_DEBUG_INTERRUPTS
|
||||||
printk("cyy_interrupt: spurious interrupt %d\n\r", irq);
|
printk("cyy_interrupt: spurious interrupt %d\n\r", irq);
|
||||||
|
|
@ -1107,331 +1434,9 @@ cyy_interrupt(int irq, void *dev_id)
|
||||||
if(1000<too_many++){
|
if(1000<too_many++){
|
||||||
break;
|
break;
|
||||||
}
|
}
|
||||||
if (status & CySRReceive) { /* reception interrupt */
|
cyy_intr_chip(cinfo, chip, base_addr, status, index);
|
||||||
#ifdef CY_DEBUG_INTERRUPTS
|
}
|
||||||
printk("cyy_interrupt: rcvd 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+(CyRIR<<index));
|
|
||||||
channel = (u_short ) (save_xir & CyIRChannel);
|
|
||||||
i = channel + chip * 4 + cinfo->first_line;
|
|
||||||
info = &cy_port[i];
|
|
||||||
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... */
|
|
||||||
} while(had_work);
|
} while(had_work);
|
||||||
|
|
||||||
/* clear interrupts */
|
/* clear interrupts */
|
||||||
|
|
|
||||||
Loading…
Add table
Reference in a new issue