From e941027f53648ac3384057032be1ac64da3e8cd0 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Fri, 8 Dec 2006 02:39:28 -0800 Subject: [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 Cc: Alan Cox Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/char/cyclades.c | 675 ++++++++++++++++++++++++------------------------ 1 file changed, 340 insertions(+), 335 deletions(-) (limited to 'drivers') diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c index 3bb4e534c14e..dd8223dc9086 100644 --- a/drivers/char/cyclades.c +++ b/drivers/char/cyclades.c @@ -1053,6 +1053,341 @@ detect_isa_irq(void __iomem *address) } #endif /* CONFIG_ISA */ +static void cyy_intr_chip(struct cyclades_card *cinfo, int chip, + void __iomem *base_addr, int status, int index) +{ + struct cyclades_port *info; + struct tty_struct *tty; + volatile int char_count; + int i, j, len, mdm_change, mdm_status, outch; + int save_xir, channel, save_car; + char data; + + if (status & CySRReceive) { /* reception interrupt */ +#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<first_line; + info = &cy_port[i]; + info->last_active = jiffies; + save_car = cy_readb(base_addr+(CyCAR<tty == 0){ + j = (cy_readb(base_addr+(CyRIVR<tty; + j = (cy_readb(base_addr+(CyRIVR<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++; + return; + } + 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<icount.rx++; + if (info->flags & ASYNC_SAK){ + do_SAK(tty); + } + }else if(data & CyFRAME){ + tty_insert_flip_char(tty, cy_readb(base_addr+(CyRDSR<icount.rx++; + info->idle_stats.frame_errs++; + }else if(data & CyPARITY){ + /* Pieces of seven... */ + tty_insert_flip_char(tty, cy_readb(base_addr+(CyRDSR<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<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<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<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<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<first_line; + save_car = cy_readb(base_addr+(CyCAR<last_active = jiffies; + if(info->tty == 0){ + cy_writeb(base_addr+(CySRER<xmit_fifo_size; + + if(info->x_char) { /* send special char */ + outch = info->x_char; + cy_writeb(base_addr+(CyTDR<icount.tx++; + info->x_char = 0; + } + + if (info->breakon || info->breakoff) { + if (info->breakon) { + cy_writeb(base_addr + (CyTDR<breakon = 0; + char_count -= 2; + } + if (info->breakoff) { + cy_writeb(base_addr + (CyTDR<breakoff = 0; + char_count -= 2; + } + } + + while (char_count-- > 0){ + if (!info->xmit_cnt){ + if (cy_readb(base_addr+(CySRER<xmit_buf == 0){ + cy_writeb(base_addr+(CySRER<tty->stopped || info->tty->hw_stopped){ + cy_writeb(base_addr+(CySRER<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<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<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<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<first_line]; + info->last_active = jiffies; + save_car = cy_readb(base_addr+(CyCAR<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<tty->hw_stopped = 1; + cy_writeb(base_addr+(CySRER<card_lock); + } +} + /* The real interrupt service routine is called whenever the card wants its hand held--chars received, out buffer empty, modem change, etc. @@ -1060,22 +1395,14 @@ detect_isa_irq(void __iomem *address) static irqreturn_t cyy_interrupt(int irq, void *dev_id) { - struct tty_struct *tty; int status; struct cyclades_card *cinfo; - struct cyclades_port *info; void __iomem *base_addr, *card_base_addr; int chip; - int save_xir, channel, save_car; - char data; - volatile int char_count; - int outch; - int i,j,index; + int index; int too_many; int had_work; - int mdm_change; - int mdm_status; - int len; + if((cinfo = (struct cyclades_card *)dev_id) == 0){ #ifdef CY_DEBUG_INTERRUPTS printk("cyy_interrupt: spurious interrupt %d\n\r", irq); @@ -1107,331 +1434,9 @@ cyy_interrupt(int irq, void *dev_id) if(1000card_lock); - save_xir = (u_char) cy_readb(base_addr+(CyRIR<first_line; - info = &cy_port[i]; - info->last_active = jiffies; - save_car = cy_readb(base_addr+(CyCAR<tty == 0){ - j = (cy_readb(base_addr+(CyRIVR<tty; - j = (cy_readb(base_addr+(CyRIVR<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<icount.rx++; - if (info->flags & ASYNC_SAK){ - do_SAK(tty); - } - }else if(data & CyFRAME){ - tty_insert_flip_char(tty, cy_readb(base_addr+(CyRDSR<icount.rx++; - info->idle_stats.frame_errs++; - }else if(data & CyPARITY){ - /* Pieces of seven... */ - tty_insert_flip_char(tty, cy_readb(base_addr+(CyRDSR<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<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<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<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<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<first_line; - save_car = cy_readb(base_addr+(CyCAR<last_active = jiffies; - if(info->tty == 0){ - cy_writeb(base_addr+(CySRER<xmit_fifo_size; - - if(info->x_char) { /* send special char */ - outch = info->x_char; - cy_writeb(base_addr+(CyTDR<icount.tx++; - info->x_char = 0; - } - - if (info->breakon || info->breakoff) { - if (info->breakon) { - cy_writeb(base_addr + (CyTDR<breakon = 0; - char_count -= 2; - } - if (info->breakoff) { - cy_writeb(base_addr + (CyTDR<breakoff = 0; - char_count -= 2; - } - } - - while (char_count-- > 0){ - if (!info->xmit_cnt){ - if (cy_readb(base_addr+(CySRER<xmit_buf == 0){ - cy_writeb(base_addr+(CySRER<tty->stopped || info->tty->hw_stopped){ - cy_writeb(base_addr+(CySRER<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<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<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<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<first_line]; - info->last_active = jiffies; - save_car = cy_readb(base_addr+(CyCAR<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<tty->hw_stopped = 1; - cy_writeb(base_addr+(CySRER<card_lock); - } - } /* end while status != 0 */ - } /* end loop for chips... */ + cyy_intr_chip(cinfo, chip, base_addr, status, index); + } + } } while(had_work); /* clear interrupts */ -- cgit v1.2.3