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Remove code that stops transfers of >63K. The Sun 4 doesn't have this 

limitation, and minphys() is supposed to catch this on other architectures.
This commit is contained in:
cjs 1997-03-14 19:57:20 +00:00
parent 76c1d7a5b5
commit ca5f101ba7
1 changed files with 1 additions and 16 deletions
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17
sys/arch/sparc/dev/si.c
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@ -1,4 +1,4 @@
/* $NetBSD: si.c,v 1.34 1997/03/10 23:01:43 pk Exp $ */
/* $NetBSD: si.c,v 1.35 1997/03/14 19:57:20 cjs Exp $ */
/*-
* Copyright (c) 1996 The NetBSD Foundation, Inc.
@ -659,21 +659,6 @@ si_dma_alloc(ncr_sc)
if (xlen < MIN_DMA_LEN)
panic("si_dma_alloc: xlen=0x%x\n", xlen);
/*
* XXX SUN4 doesn't have this limitation?
* Never attempt single transfers of more than 63k, because
* our count register may be only 16 bits (an OBIO adapter).
* This should never happen since already bounded by minphys().
* XXX - Should just segment these...
*/
if (xlen > MAX_DMA_LEN) {
printf("si_dma_alloc: excessive xlen=0x%x\n", xlen);
#ifdef DEBUG
Debugger();
#endif
ncr_sc->sc_datalen = xlen = MAX_DMA_LEN;
}
/* Find free DMA handle. Guaranteed to find one since we have
as many DMA handles as the driver has processes. */
for (i = 0; i < SCI_OPENINGS; i++) {