450 static void z8530_status(struct z8530_channel *chan)  in z8530_status()  argument
454 	status = read_zsreg(chan, R0);  in z8530_status()
455 	altered = chan->status ^ status;  in z8530_status()
457 	chan->status = status;  in z8530_status()
461 		chan->netdevice->stats.tx_fifo_errors++;  in z8530_status()
462 		write_zsctrl(chan, ERR_RES);  in z8530_status()
463 		z8530_tx_done(chan);  in z8530_status()
466 	if (altered & chan->dcdcheck)  in z8530_status()
468 		if (status & chan->dcdcheck) {  in z8530_status()
469 			pr_info("%s: DCD raised\n", chan->dev->name);  in z8530_status()
470 			write_zsreg(chan, R3, chan->regs[3] | RxENABLE);  in z8530_status()
471 			if (chan->netdevice)  in z8530_status()
472 				netif_carrier_on(chan->netdevice);  in z8530_status()
474 			pr_info("%s: DCD lost\n", chan->dev->name);  in z8530_status()
475 			write_zsreg(chan, R3, chan->regs[3] & ~RxENABLE);  in z8530_status()
476 			z8530_flush_fifo(chan);  in z8530_status()
477 			if (chan->netdevice)  in z8530_status()
478 				netif_carrier_off(chan->netdevice);  in z8530_status()
482 	write_zsctrl(chan, RES_EXT_INT);  in z8530_status()
483 	write_zsctrl(chan, RES_H_IUS);  in z8530_status()
505 static void z8530_dma_rx(struct z8530_channel *chan)  in z8530_dma_rx()  argument
507 	if(chan->rxdma_on)  in z8530_dma_rx()
512 		read_zsreg(chan, R7);  in z8530_dma_rx()
513 		read_zsreg(chan, R6);  in z8530_dma_rx()
515 		status=read_zsreg(chan, R1);  in z8530_dma_rx()
519 			z8530_rx_done(chan);	/* Fire up the next one */  in z8530_dma_rx()
521 		write_zsctrl(chan, ERR_RES);  in z8530_dma_rx()
522 		write_zsctrl(chan, RES_H_IUS);  in z8530_dma_rx()
527 		z8530_rx(chan);  in z8530_dma_rx()
539 static void z8530_dma_tx(struct z8530_channel *chan)  in z8530_dma_tx()  argument
541 	if(!chan->dma_tx)  in z8530_dma_tx()
544 		z8530_tx(chan);  in z8530_dma_tx()
549 	z8530_tx(chan);  in z8530_dma_tx()
562 static void z8530_dma_status(struct z8530_channel *chan)  in z8530_dma_status()  argument
566 	status=read_zsreg(chan, R0);  in z8530_dma_status()
567 	altered=chan->status^status;  in z8530_dma_status()
569 	chan->status=status;  in z8530_dma_status()
572 	if(chan->dma_tx)  in z8530_dma_status()
579 			disable_dma(chan->txdma);  in z8530_dma_status()
580 			clear_dma_ff(chan->txdma);	  in z8530_dma_status()
581 			chan->txdma_on=0;  in z8530_dma_status()
583 			z8530_tx_done(chan);  in z8530_dma_status()
587 	if (altered & chan->dcdcheck)  in z8530_dma_status()
589 		if (status & chan->dcdcheck) {  in z8530_dma_status()
590 			pr_info("%s: DCD raised\n", chan->dev->name);  in z8530_dma_status()
591 			write_zsreg(chan, R3, chan->regs[3] | RxENABLE);  in z8530_dma_status()
592 			if (chan->netdevice)  in z8530_dma_status()
593 				netif_carrier_on(chan->netdevice);  in z8530_dma_status()
595 			pr_info("%s: DCD lost\n", chan->dev->name);  in z8530_dma_status()
596 			write_zsreg(chan, R3, chan->regs[3] & ~RxENABLE);  in z8530_dma_status()
597 			z8530_flush_fifo(chan);  in z8530_dma_status()
598 			if (chan->netdevice)  in z8530_dma_status()
599 				netif_carrier_off(chan->netdevice);  in z8530_dma_status()
603 	write_zsctrl(chan, RES_EXT_INT);  in z8530_dma_status()
604 	write_zsctrl(chan, RES_H_IUS);  in z8530_dma_status()
672 static void z8530_status_clear(struct z8530_channel *chan)  in z8530_status_clear()  argument
674 	u8 status=read_zsreg(chan, R0);  in z8530_status_clear()
676 		write_zsctrl(chan, ERR_RES);  in z8530_status_clear()
677 	write_zsctrl(chan, RES_EXT_INT);  in z8530_status_clear()
678 	write_zsctrl(chan, RES_H_IUS);  in z8530_status_clear()