mischief/openbsd-src
1
0
Fork 0
mirror of https://github.com/openbsd/src.git synced 2024-12-21 23:18:00 -08:00
Code

Pass BUS_DMA_64BIT to bus_dmamem_alloc(). On amd64, this allows use of

Browse Source 
memory past 4GB, potentially freeing up some low memory for more important
uses.

ok dlg@
This commit is contained in:
jmatthew 2024-12-20 03:31:09 +00:00
parent ff6a185afe
commit dd0896fb3b
1 changed files with 5 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
sys/dev/pci/if_mcx.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: if_mcx.c,v 1.117 2024/10/23 01:47:47 jsg Exp $ */
/* $OpenBSD: if_mcx.c,v 1.118 2024/12/20 03:31:09 jmatthew Exp $ */
/*
* Copyright (c) 2017 David Gwynne <dlg@openbsd.org>
@ -8278,7 +8278,7 @@ mcx_dmamem_alloc(struct mcx_softc *sc, struct mcx_dmamem *mxm,
return (1);
if (bus_dmamem_alloc(sc->sc_dmat, mxm->mxm_size,
align, 0, &mxm->mxm_seg, 1, &mxm->mxm_nsegs,
BUS_DMA_WAITOK | BUS_DMA_ZERO) != 0)
BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_64BIT) != 0)
goto destroy;
if (bus_dmamem_map(sc->sc_dmat, &mxm->mxm_seg, mxm->mxm_nsegs,
mxm->mxm_size, &mxm->mxm_kva, BUS_DMA_WAITOK) != 0)
@ -8326,7 +8326,8 @@ mcx_hwmem_alloc(struct mcx_softc *sc, struct mcx_hwmem *mhm, unsigned int pages)
seglen = sizeof(*segs) * pages;
if (bus_dmamem_alloc(sc->sc_dmat, len, MCX_PAGE_SIZE, 0,
segs, pages, &mhm->mhm_seg_count, BUS_DMA_NOWAIT) != 0)
segs, pages, &mhm->mhm_seg_count,
BUS_DMA_NOWAIT|BUS_DMA_64BIT) != 0)
goto free_segs;
if (mhm->mhm_seg_count < pages) {
@ -8349,7 +8350,7 @@ mcx_hwmem_alloc(struct mcx_softc *sc, struct mcx_hwmem *mhm, unsigned int pages)
mhm->mhm_segs = segs;
if (bus_dmamap_create(sc->sc_dmat, len, pages, MCX_PAGE_SIZE,
MCX_PAGE_SIZE, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW /*|BUS_DMA_64BIT*/,
MCX_PAGE_SIZE, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW|BUS_DMA_64BIT,
&mhm->mhm_map) != 0)
goto free_dmamem;