From: CLEMENT MATHIEU--DRIF <clement.mathieu--d...@eviden.com>
The address_type bit will be set to PCI_AT_TRANSLATED by devices that
use cached addresses obtained via ATS.
Signed-off-by: Clement Mathieu--Drif <clement.mathieu--d...@eviden.com>
Message-Id: <20250628180226.133285-2-clement.mathieu--d...@eviden.com>
Reviewed-by: Michael S. Tsirkin <m...@redhat.com>
Signed-off-by: Michael S. Tsirkin <m...@redhat.com>
---
include/exec/memattrs.h | 3 +++
include/hw/pci/pci.h | 9 +++++++++
2 files changed, 12 insertions(+)
diff --git a/include/exec/memattrs.h b/include/exec/memattrs.h
index 8db1d30464..52ee955249 100644
--- a/include/exec/memattrs.h
+++ b/include/exec/memattrs.h
@@ -54,6 +54,9 @@ typedef struct MemTxAttrs {
*/
unsigned int pid:8;
+ /* PCI - IOMMU operations, see PCIAddressType */
+ unsigned int address_type:1;
+
/*
* Bus masters which don't specify any attributes will get this
* (via the MEMTXATTRS_UNSPECIFIED constant), so that we can
diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h
index df3cc7b875..6b7d3ac8a3 100644
--- a/include/hw/pci/pci.h
+++ b/include/hw/pci/pci.h
@@ -134,6 +134,15 @@ struct PCIHostDeviceAddress {
unsigned int function;
};
+/*
+ * Represents the Address Type (AT) field in a PCI request,
+ * see MemTxAttrs.address_type
+ */
+typedef enum PCIAddressType {
+ PCI_AT_UNTRANSLATED = 0, /* Default when no attribute is set */
+ PCI_AT_TRANSLATED = 1,
+} PCIAddressType;
+
typedef void PCIConfigWriteFunc(PCIDevice *pci_dev,
uint32_t address, uint32_t data, int len);
typedef uint32_t PCIConfigReadFunc(PCIDevice *pci_dev,
--
MST
