Limit DMA to below 4GB - the supported controllers are limited this
way. Thanks to jmcneill for a version of this patch.
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6499c89471
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@ -1,4 +1,4 @@
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/* $NetBSD: dwcmmc_fdt.c,v 1.21 2024/02/09 06:28:50 skrll Exp $ */
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/* $NetBSD: dwcmmc_fdt.c,v 1.22 2024/02/09 08:50:52 skrll Exp $ */
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/*-
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* Copyright (c) 2015-2018 Jared McNeill <jmcneill@invisible.ca>
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@ -27,7 +27,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: dwcmmc_fdt.c,v 1.21 2024/02/09 06:28:50 skrll Exp $");
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__KERNEL_RCSID(0, "$NetBSD: dwcmmc_fdt.c,v 1.22 2024/02/09 08:50:52 skrll Exp $");
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#include <sys/param.h>
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#include <sys/bus.h>
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@ -149,7 +149,16 @@ dwcmmc_fdt_attach(device_t parent, device_t self, void *aux)
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sc->sc_dev = self;
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sc->sc_bst = faa->faa_bst;
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if (sizeof(bus_addr_t) > 4) {
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error = bus_dmatag_subregion(faa->faa_dmat, 0, __MASK(32),
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&sc->sc_dmat, BUS_DMA_WAITOK);
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if (error != 0) {
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aprint_error(": couldn't create DMA tag: %d\n", error);
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return;
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}
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} else {
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sc->sc_dmat = faa->faa_dmat;
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}
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error = bus_space_map(sc->sc_bst, addr, size, 0, &sc->sc_bsh);
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if (error) {
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aprint_error(": couldn't map %#" PRIx64 ": %d\n",
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