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author | David Gibson | 2012-06-27 06:50:37 +0200 |
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committer | Anthony Liguori | 2012-06-27 23:33:25 +0200 |
commit | 8292f75ad2d65364387b09bb920dd65c8842a3a6 (patch) | |
tree | 04df60a5d9809e2b4f5e7796587148613d390af0 /dma.h | |
parent | rtl8139: validate rx ring before receiving packets (diff) | |
download | qemu-8292f75ad2d65364387b09bb920dd65c8842a3a6.tar.gz qemu-8292f75ad2d65364387b09bb920dd65c8842a3a6.tar.xz qemu-8292f75ad2d65364387b09bb920dd65c8842a3a6.zip |
Better support for dma_addr_t variables
A while back, we introduced the dma_addr_t type, which is supposed to
be used for bus visible memory addresses. At present, this is an
alias for target_phys_addr_t, but this will change when we eventually
add support for guest visible IOMMUs.
There are some instances of target_phys_addr_t in the code now which
should really be dma_addr_t, but can't be trivially converted due to
missing features which this patch corrects.
* We add DMA_ADDR_BITS analagous to TARGET_PHYS_ADDR_BITS. This is
important where we need to make a compile-time (#if) based on the
size of dma_addr_t.
* We add a new helper macro to create device properties which take a
dma_addr_t, currently an alias to DEFINE_PROP_TADDR().
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'dma.h')
-rw-r--r-- | dma.h | 1 |
1 files changed, 1 insertions, 0 deletions
@@ -31,6 +31,7 @@ struct QEMUSGList { #if defined(TARGET_PHYS_ADDR_BITS) typedef target_phys_addr_t dma_addr_t; +#define DMA_ADDR_BITS TARGET_PHYS_ADDR_BITS #define DMA_ADDR_FMT TARGET_FMT_plx struct ScatterGatherEntry { |