Author: jhibbits
Date: Sun Aug 4 19:25:23 2019
New Revision: 350569
URL: https://svnweb.freebsd.org/changeset/base/350569
Log:
powerpc: Enable the BUS_DMA_NOCACHE flag handling
The flag handling was committed commented out 7 years ago. It works, and is
needed for LinuxKPI-based DRM drivers.
Also mark a local as potentially unusable, as it's only really used when KTR
is enabled.
Submitted by: mmacy
Modified:
head/sys/powerpc/powerpc/busdma_machdep.c
Modified: head/sys/powerpc/powerpc/busdma_machdep.c
==============================================================================
--- head/sys/powerpc/powerpc/busdma_machdep.c Sun Aug 4 12:47:38 2019
(r350568)
+++ head/sys/powerpc/powerpc/busdma_machdep.c Sun Aug 4 19:25:23 2019
(r350569)
@@ -350,7 +350,7 @@ bus_dma_tag_set_domain(bus_dma_tag_t dmat, int domain)
int
bus_dma_tag_destroy(bus_dma_tag_t dmat)
{
- bus_dma_tag_t dmat_copy;
+ bus_dma_tag_t dmat_copy __unused;
int error;
error = 0;
@@ -515,11 +515,9 @@ bus_dmamem_alloc(bus_dma_tag_t dmat, void** vaddr, int
if (flags & BUS_DMA_ZERO)
mflags |= M_ZERO;
-#ifdef NOTYET
if (flags & BUS_DMA_NOCACHE)
attr = VM_MEMATTR_UNCACHEABLE;
else
-#endif
attr = VM_MEMATTR_DEFAULT;
/*
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