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authorzbb <zbb@FreeBSD.org>2015-05-08 18:47:19 +0000
committerzbb <zbb@FreeBSD.org>2015-05-08 18:47:19 +0000
commitff2ee3a4989ae83a7bdf6fc7d9573b5eb0bd1dac (patch)
treea7adffacf4ea8dd55f877cca2b86f824e5ea003f /sys/conf
parent82e528e78860ca6242a565e82588c49f5667b24d (diff)
downloadFreeBSD-src-ff2ee3a4989ae83a7bdf6fc7d9573b5eb0bd1dac.zip
FreeBSD-src-ff2ee3a4989ae83a7bdf6fc7d9573b5eb0bd1dac.tar.gz
Port x86 busdma to ARM64
The x86 busdma subsystem allows using multiple implementations. By default the classic bounce buffer approach is used, however on systems with IOMMU it could be in runtime switched to more efficient hardware accelerated implementation. This commit adds ARM64 port of the x86 busdma framework and bounce buffer backend. It is ready to use on IO coherent systems. If the IO coherency cannot be guaranteed, the cache management operations have to be added to this code in places marked by /* XXX ARM64TODO (...) */ comments. Also IOMMU support might be added by registering another busdma implementation like it is already done on the x86. Reviewed by: andrew, emaste Obtained from: Semihalf Sponsored by: The FreeBSD Foundation
Diffstat (limited to 'sys/conf')
-rw-r--r--sys/conf/files.arm641
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/conf/files.arm64 b/sys/conf/files.arm64
index f80fecd..9b1ff0d 100644
--- a/sys/conf/files.arm64
+++ b/sys/conf/files.arm64
@@ -5,6 +5,7 @@ arm64/arm64/autoconf.c standard
arm64/arm64/bcopy.c standard
arm64/arm64/bus_machdep.c standard
arm64/arm64/bus_space_asm.S standard
+arm64/arm64/busdma_bounce.c standard
arm64/arm64/busdma_machdep.c standard
arm64/arm64/clock.c standard
arm64/arm64/copyinout.S standard
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