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[Qemu-devel] [PATCH 01/13] Better support for dma_addr_t variables
From: |
David Gibson |
Subject: |
[Qemu-devel] [PATCH 01/13] Better support for dma_addr_t variables |
Date: |
Fri, 20 Apr 2012 14:16:45 +1000 |
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 | 12 ++++++++++++
2 files changed, 13 insertions(+)
create mode 100644 hw/qdev-dma.h
diff --git a/dma.h b/dma.h
index 8c1ec8f..fe08b72 100644
--- a/dma.h
+++ b/dma.h
@@ -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 0000000..f0ff558
--- /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)
--
1.7.9.5
- [Qemu-devel] [RFC 0/13] Support for guest visible IOMMUs, David Gibson, 2012/04/20
- [Qemu-devel] [PATCH 03/13] Implement cpu_physical_memory_zero(), David Gibson, 2012/04/20
- [Qemu-devel] [PATCH 07/13] ide/ahci: Use universal DMA helper functions, David Gibson, 2012/04/20
- [Qemu-devel] [PATCH 04/13] iommu: Add universal DMA helper functions, David Gibson, 2012/04/20
- [Qemu-devel] [PATCH 01/13] Better support for dma_addr_t variables,
David Gibson <=
- [Qemu-devel] [PATCH 12/13] iommu: Allow PCI to use IOMMU infrastructure, David Gibson, 2012/04/20
- [Qemu-devel] [PATCH 08/13] usb: Convert usb_packet_{map, unmap} to universal DMA helpers, David Gibson, 2012/04/20
- [Qemu-devel] [PATCH 02/13] usb-xhci: Use PCI DMA helper functions, David Gibson, 2012/04/20
- [Qemu-devel] [PATCH 13/13] pseries: Implement IOMMU and DMA for PAPR PCI devices, David Gibson, 2012/04/20
- [Qemu-devel] [PATCH 06/13] iommu: Make sglists and dma_bdrv helpers use new universal DMA helpers, David Gibson, 2012/04/20
- [Qemu-devel] [PATCH 09/13] iommu: Introduce IOMMU emulation infrastructure, David Gibson, 2012/04/20
- [Qemu-devel] [PATCH 10/13] iommu: Add facility to cancel in-use dma memory maps, David Gibson, 2012/04/20
- [Qemu-devel] [PATCH 05/13] usb-ohci: Use universal DMA helper functions, David Gibson, 2012/04/20
- [Qemu-devel] [PATCH 11/13] pseries: Convert sPAPR TCEs to use generic IOMMU infrastructure, David Gibson, 2012/04/20