diff options
| author | David Gibson <david@gibson.dropbear.id.au> | 2012-06-27 14:50:37 +1000 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2012-06-27 16:33:25 -0500 |
| commit | 8292f75ad2d65364387b09bb920dd65c8842a3a6 (patch) | |
| tree | 04df60a5d9809e2b4f5e7796587148613d390af0 | |
| parent | fcce6fd25f3e233f9da9ef01230a668ab35bd343 (diff) | |
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>
| -rw-r--r-- | dma.h | 1 | ||||
| -rw-r--r-- | hw/qdev-dma.h | 12 |
2 files changed, 13 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 { diff --git a/hw/qdev-dma.h b/hw/qdev-dma.h new file mode 100644 index 0000000000..f0ff558414 --- /dev/null +++ b/hw/qdev-dma.h @@ -0,0 +1,12 @@ +/* + * Support for dma_addr_t typed properties + * + * Copyright (C) 2012 David Gibson, IBM Corporation. + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ +#include "qdev-addr.h" + +#define DEFINE_PROP_DMAADDR(_n, _s, _f, _d) \ + DEFINE_PROP_TADDR(_n, _s, _f, _d) |