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Specify our boundary restriction when allocating DMAble memory.

This commit is contained in:
pk 1998-08-28 20:07:52 +00:00
parent 77d0a69569
commit ca868d7da6
1 changed files with 4 additions and 9 deletions
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13
sys/arch/sparc/dev/if_le_ledma.c
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@ -1,4 +1,4 @@
/* $NetBSD: if_le_ledma.c,v 1.3 1998/08/15 10:51:16 mycroft Exp $ */
/* $NetBSD: if_le_ledma.c,v 1.4 1998/08/28 20:07:52 pk Exp $ */
/*-
* Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
@ -129,8 +129,8 @@ struct le_softc {
u_long sc_laddr; /* LANCE DMA address */
};
#define MEMSIZE 0x4000 /* LANCE memory size */
#define MEMSIZE (16*1024) /* LANCE memory size */
#define LEDMA_BOUNDARY (16*1024*1024) /* must not cross 16MB boundary */
int lematch_ledma __P((struct device *, struct cfdata *, void *));
void leattach_ledma __P((struct device *, struct device *, void *));
@ -406,7 +406,7 @@ leattach_ledma(parent, self, aux)
/* Allocate buffer memory */
sc->sc_memsize = MEMSIZE;
error = bus_dmamem_alloc(lesc->sc_dmatag, MEMSIZE, NBPG, 0,
error = bus_dmamem_alloc(lesc->sc_dmatag, MEMSIZE, NBPG, LEDMA_BOUNDARY,
&seg, 1, &rseg, BUS_DMA_NOWAIT);
if (error) {
printf("leattach_ledma: DMA buffer alloc error %d\n", error);
@ -421,11 +421,6 @@ leattach_ledma(parent, self, aux)
return;
}
#if defined (SUN4M)
if ((seg.ds_addr & 0xffffff) >=
(seg.ds_addr & 0xffffff) + MEMSIZE)
panic("leattach_ledma: Lance buffer crosses 16MB boundary");
#endif
sc->sc_addr = seg.ds_addr & 0xffffff;
sc->sc_conf3 = LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON;