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/* ethwstrt.c - ethwstrt */

#include <conf.h>
#include <kernel.h>
#include <proc.h>
#include <network.h>
#include <qbus.h>

/*------------------------------------------------------------------------
 *  ethwstrt - start an ethernet write operation on the DEQNA
 *------------------------------------------------------------------------
 */

ethwstrt(etptr, buf, len, setup)
	struct	etblk	*etptr;
	char	*buf;
	int	len;
	int	setup;
{
	register struct	dcmd	*dcmptr;
	register struct	dqregs	*dqptr;

	dqptr = etptr->eioaddr;
	while (! (dqptr->d_csr & DQ_XLI) )
		;
	etptr->etwtry = EXRETRY;
	dcmptr = etptr->ewcmd;
	dcmptr->dc_bufh = DC_VALID | DC_ENDM | (etptr->etsetup = setup) |
			    hiQ2low(buf);
	if (isodd(len))
		dcmptr->dc_bufh |= DC_LBIT;
	dcmptr->dc_buf  = (short) buf;
	dcmptr->dc_len = dqlen(len);
	dcmptr->dc_st1 = dcmptr->dc_st2 = DC_INIT;
	dcmptr->dc_flag = DC_NUSED;
	dqptr->d_wcmd = (short) dcmptr;
	dqptr->d_wcmdh = hiQ2low(dcmptr);
}

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