Module Name: src
Committed By: riastradh
Date: Tue Jun 4 21:43:39 UTC 2024
Modified Files:
src/sys/external/bsd/drm2/dist/drm/nouveau/nvkm/subdev/instmem:
nouveau_nvkm_subdev_instmem_gk20a.c
Log Message:
nouveau_nvkm_subdev_instmem_gk20a.c: Use BUS_DMA_PREFETCHABLE.
Matches Linux's pgprot_writecombine.
Unclear where the appropriate bus_dmamap_sync happens, or is supposed
to happen -- not using it would be wrong, but asking for a
prefetchable mapping may paper over symptoms, at least!
To generate a diff of this commit:
cvs rdiff -u -r1.9 -r1.10 \
src/sys/external/bsd/drm2/dist/drm/nouveau/nvkm/subdev/instmem/nouveau_nvkm_subdev_instmem_gk20a.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/external/bsd/drm2/dist/drm/nouveau/nvkm/subdev/instmem/nouveau_nvkm_subdev_instmem_gk20a.c
diff -u src/sys/external/bsd/drm2/dist/drm/nouveau/nvkm/subdev/instmem/nouveau_nvkm_subdev_instmem_gk20a.c:1.9 src/sys/external/bsd/drm2/dist/drm/nouveau/nvkm/subdev/instmem/nouveau_nvkm_subdev_instmem_gk20a.c:1.10
--- src/sys/external/bsd/drm2/dist/drm/nouveau/nvkm/subdev/instmem/nouveau_nvkm_subdev_instmem_gk20a.c:1.9 Sun Dec 19 12:29:47 2021
+++ src/sys/external/bsd/drm2/dist/drm/nouveau/nvkm/subdev/instmem/nouveau_nvkm_subdev_instmem_gk20a.c Tue Jun 4 21:43:39 2024
@@ -1,4 +1,4 @@
-/* $NetBSD: nouveau_nvkm_subdev_instmem_gk20a.c,v 1.9 2021/12/19 12:29:47 riastradh Exp $ */
+/* $NetBSD: nouveau_nvkm_subdev_instmem_gk20a.c,v 1.10 2024/06/04 21:43:39 riastradh Exp $ */
/*
* Copyright (c) 2015, NVIDIA CORPORATION. All rights reserved.
@@ -44,7 +44,7 @@
* goes beyond a certain threshold. At the moment this limit is 1MB.
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_instmem_gk20a.c,v 1.9 2021/12/19 12:29:47 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_instmem_gk20a.c,v 1.10 2024/06/04 21:43:39 riastradh Exp $");
#include "priv.h"
@@ -241,7 +241,7 @@ gk20a_instobj_acquire_iommu(struct nvkm_
#ifdef __NetBSD__
void *kva;
if (bus_dmamem_map(imem->dmat, node->segs, node->nsegs, size,
- &kva, BUS_DMA_WAITOK))
+ &kva, BUS_DMA_WAITOK|BUS_DMA_PREFETCHABLE))
node->base.vaddr = NULL;
else
node->base.vaddr = kva;
