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Audio1 does not support 16-bit DMA. Eliminate some code that tried to handle

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that case.
This commit is contained in:
mycroft 1999-03-16 14:17:00 +00:00
parent 16cc2ad23b
commit 84f100d175
1 changed files with 2 additions and 6 deletions
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8
sys/dev/isa/ess.c
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@ -1,4 +1,4 @@
/* $NetBSD: ess.c,v 1.37 1999/03/16 13:37:23 mycroft Exp $ */
/* $NetBSD: ess.c,v 1.38 1999/03/16 14:17:00 mycroft Exp $ */
/*
* Copyright 1997
@ -1273,14 +1273,12 @@ ess_audio1_trigger_output(addr, start, end, blksize, intr, arg, param)
(char *)end - (char *)start, NULL,
DMAMODE_WRITE | DMAMODE_LOOPDEMAND, BUS_DMA_NOWAIT);
if (IS16BITDRQ(sc->sc_audio1.drq))
blksize >>= 1; /* use word count for 16 bit DMA */
/* Program transfer count registers with 2's complement of count. */
blksize = -blksize;
ess_write_x_reg(sc, ESS_XCMD_XFER_COUNTLO, blksize);
ess_write_x_reg(sc, ESS_XCMD_XFER_COUNTHI, blksize >> 8);
/* Use 4 bytes per input DMA. */
/* Use 4 bytes per output DMA. */
ess_set_xreg_bits(sc, ESS_XCMD_DEMAND_CTRL,
ESS_DEMAND_CTRL_DEMAND_4);
@ -1442,8 +1440,6 @@ ess_audio1_trigger_input(addr, start, end, blksize, intr, arg, param)
(char *)end - (char *)start, NULL,
DMAMODE_READ | DMAMODE_LOOPDEMAND, BUS_DMA_NOWAIT);
if (IS16BITDRQ(sc->sc_audio1.drq))
blksize >>= 1; /* use word count for 16 bit DMA */
/* Program transfer count registers with 2's complement of count. */
blksize = -blksize;
ess_write_x_reg(sc, ESS_XCMD_XFER_COUNTLO, blksize);