Commit 8292f75a authored by David Gibson's avatar David Gibson Committed by Anthony Liguori
Browse files

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: default avatarDavid Gibson <david@gibson.dropbear.id.au>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarAnthony Liguori <aliguori@us.ibm.com>
parent fcce6fd2
...@@ -31,6 +31,7 @@ struct QEMUSGList { ...@@ -31,6 +31,7 @@ struct QEMUSGList {
#if defined(TARGET_PHYS_ADDR_BITS) #if defined(TARGET_PHYS_ADDR_BITS)
typedef target_phys_addr_t dma_addr_t; typedef target_phys_addr_t dma_addr_t;
#define DMA_ADDR_BITS TARGET_PHYS_ADDR_BITS
#define DMA_ADDR_FMT TARGET_FMT_plx #define DMA_ADDR_FMT TARGET_FMT_plx
struct ScatterGatherEntry { struct ScatterGatherEntry {
......
/*
* 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)
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