[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH] Better support for dma_addr_t variables
From: |
David Gibson |
Subject: |
[Qemu-devel] [PATCH] Better support for dma_addr_t variables |
Date: |
Tue, 27 Mar 2012 13:43:21 +1100 |
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 <address@hidden>
---
dma.h | 1 +
hw/qdev-dma.h | 4 ++++
2 files changed, 5 insertions(+), 0 deletions(-)
create mode 100644 hw/qdev-dma.h
diff --git a/dma.h b/dma.h
index 05ac325..463095c 100644
--- a/dma.h
+++ b/dma.h
@@ -32,6 +32,7 @@ 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 0000000..e407771
--- /dev/null
+++ b/hw/qdev-dma.h
@@ -0,0 +1,4 @@
+#include "qdev-addr.h"
+
+#define DEFINE_PROP_DMAADDR(_n, _s, _f, _d) \
+ DEFINE_PROP_TADDR(_n, _s, _f, _d)
--
1.7.9.1
- [Qemu-devel] [PATCH] Better support for dma_addr_t variables,
David Gibson <=