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As the final step in configuraing bus-master DMA, consult the boolean device 

property "pciide-disable-dma" and disable bus-master DMA if that property is
present and true.
This commit is contained in:
thorpej 2024-03-31 18:59:52 +00:00
parent e0d4a325d1
commit 8c2c2eb16d
1 changed files with 12 additions and 2 deletions
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14
sys/dev/pci/pciide_common.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: pciide_common.c,v 1.70 2023/11/20 21:59:38 thorpej Exp $ */
/* $NetBSD: pciide_common.c,v 1.71 2024/03/31 18:59:52 thorpej Exp $ */
/*
@ -70,7 +70,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pciide_common.c,v 1.70 2023/11/20 21:59:38 thorpej Exp $");
__KERNEL_RCSID(0, "$NetBSD: pciide_common.c,v 1.71 2024/03/31 18:59:52 thorpej Exp $");
#include <sys/param.h>
@ -484,6 +484,16 @@ pciide_mapreg_dma(struct pciide_softc *sc, const struct pci_attach_args *pa)
aprint_verbose(
", but unused (forced off by config file)");
sc->sc_dma_ok = 0;
} else {
bool disable;
if (prop_dictionary_get_bool(
device_properties(sc->sc_wdcdev.sc_atac.atac_dev),
"pciide-disable-dma", &disable) && disable) {
aprint_verbose(
", but unused (disabled by platform)");
sc->sc_dma_ok = 0;
}
}
break;