diff options
| author | Mark Kettenis <kettenis@cvs.openbsd.org> | 2017-12-24 12:55:53 +0000 |
|---|---|---|
| committer | Mark Kettenis <kettenis@cvs.openbsd.org> | 2017-12-24 12:55:53 +0000 |
| commit | 5e12d26c40a9a0042f3a698e3dcac29f1dbdc1e9 (patch) | |
| tree | d737164321fbe806fcfb319f9e0a934352fd74f4 /sys/dev | |
| parent | 75a517b8ab31b919370b5794bf1be903b6b5c692 (diff) | |
Allow SD/MMC controller drivers to allocate their own DMA mapping structure
to account for any relevant hardware constraints.
ok stsp@
Diffstat (limited to 'sys/dev')
| -rw-r--r-- | sys/dev/sdmmc/sdmmc.c | 5 | ||||
| -rw-r--r-- | sys/dev/sdmmc/sdmmcchip.h | 3 |
2 files changed, 5 insertions, 3 deletions
diff --git a/sys/dev/sdmmc/sdmmc.c b/sys/dev/sdmmc/sdmmc.c index 81c5a101454..863f4ee69f4 100644 --- a/sys/dev/sdmmc/sdmmc.c +++ b/sys/dev/sdmmc/sdmmc.c @@ -1,4 +1,4 @@ -/* $OpenBSD: sdmmc.c,v 1.47 2017/04/06 07:07:28 jsg Exp $ */ +/* $OpenBSD: sdmmc.c,v 1.48 2017/12/24 12:55:52 kettenis Exp $ */ /* * Copyright (c) 2006 Uwe Stuehler <uwe@openbsd.org> @@ -115,11 +115,12 @@ sdmmc_attach(struct device *parent, struct device *self, void *aux) sc->sct = saa->sct; sc->sch = saa->sch; sc->sc_dmat = saa->dmat; + sc->sc_dmap = saa->dmap; sc->sc_flags = saa->flags; sc->sc_caps = saa->caps; sc->sc_max_xfer = saa->max_xfer; - if (ISSET(sc->sc_caps, SMC_CAPS_DMA)) { + if (ISSET(sc->sc_caps, SMC_CAPS_DMA) && sc->sc_dmap == NULL) { error = bus_dmamap_create(sc->sc_dmat, MAXPHYS, SDMMC_MAXNSEGS, MAXPHYS, 0, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW, &sc->sc_dmap); if (error) { diff --git a/sys/dev/sdmmc/sdmmcchip.h b/sys/dev/sdmmc/sdmmcchip.h index f2acb6a6925..464521602f7 100644 --- a/sys/dev/sdmmc/sdmmcchip.h +++ b/sys/dev/sdmmc/sdmmcchip.h @@ -1,4 +1,4 @@ -/* $OpenBSD: sdmmcchip.h,v 1.9 2016/05/05 20:40:48 kettenis Exp $ */ +/* $OpenBSD: sdmmcchip.h,v 1.10 2017/12/24 12:55:52 kettenis Exp $ */ /* * Copyright (c) 2006 Uwe Stuehler <uwe@openbsd.org> @@ -97,6 +97,7 @@ struct sdmmcbus_attach_args { sdmmc_chipset_tag_t sct; sdmmc_chipset_handle_t sch; bus_dma_tag_t dmat; + bus_dmamap_t dmap; int flags; int caps; long max_xfer; |