Module Name: src
Committed By: rin
Date: Mon Aug 15 11:22:45 UTC 2022
Modified Files:
src/sys/arch/mac68k/obio: esp.c
Log Message:
For avdma, bus_dmamap_create(9) with nsegments = 1, as PSC supports
only one physically contiguous segment in a single DMA transaction.
Slightly improves performance.
To generate a diff of this commit:
cvs rdiff -u -r1.61 -r1.62 src/sys/arch/mac68k/obio/esp.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/mac68k/obio/esp.c
diff -u src/sys/arch/mac68k/obio/esp.c:1.61 src/sys/arch/mac68k/obio/esp.c:1.62
--- src/sys/arch/mac68k/obio/esp.c:1.61 Mon Aug 15 11:18:12 2022
+++ src/sys/arch/mac68k/obio/esp.c Mon Aug 15 11:22:45 2022
@@ -1,4 +1,4 @@
-/* $NetBSD: esp.c,v 1.61 2022/08/15 11:18:12 rin Exp $ */
+/* $NetBSD: esp.c,v 1.62 2022/08/15 11:22:45 rin Exp $ */
/*
* Copyright (c) 1997 Jason R. Thorpe.
@@ -81,7 +81,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: esp.c,v 1.61 2022/08/15 11:18:12 rin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: esp.c,v 1.62 2022/08/15 11:22:45 rin Exp $");
#include <sys/types.h>
#include <sys/param.h>
@@ -357,9 +357,9 @@ dafb_dreq: bst = oa->oa_tag;
esc->sc_pio = 0;
esc->sc_dmat = oa->oa_dmat;
- if (bus_dmamap_create(esc->sc_dmat, sc->sc_maxxfer,
- sc->sc_maxxfer / NBPG + 1, sc->sc_maxxfer, 0,
- BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW, &esc->sc_dmap)) {
+ if (bus_dmamap_create(esc->sc_dmat, sc->sc_maxxfer, 1,
+ sc->sc_maxxfer, 0, BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW,
+ &esc->sc_dmap)) {
printf("failed to create DMA map.\n");
return;
}
