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authorPavel Fedin <p.fedin@samsung.com>2015-05-27 15:59:59 +0300
committerMichael S. Tsirkin <mst@redhat.com>2015-05-31 20:29:02 +0200
commit38d40ff10f71657ea913a63d1f8477be368b92c1 (patch)
tree37afaace244c657ced80784054cea6c66c61e885 /include/exec
parentc3bdc56c183f6ca6baa502bd7861583ca98b333b (diff)
Add stream ID to MSI write
GICv3 ITS distinguishes between devices by using hardwired device IDs passed on the bus. This patch implements passing these IDs in qemu. SMMU is also known to use stream IDs, therefore this addition can also be useful for implementing platforms with SMMU. Signed-off-by: Pavel Fedin <p.fedin@samsung.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Changes from v1: - Added bus number to the stream ID - Added stream ID not only to MSI-X, but also to plain MSI. Some common code was made into msi_send_message() function. Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/exec')
-rw-r--r--include/exec/memattrs.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/exec/memattrs.h b/include/exec/memattrs.h
index 1389b4b01d..96dc440423 100644
--- a/include/exec/memattrs.h
+++ b/include/exec/memattrs.h
@@ -33,6 +33,8 @@ typedef struct MemTxAttrs {
unsigned int secure:1;
/* Memory access is usermode (unprivileged) */
unsigned int user:1;
+ /* Stream ID (for MSI for example) */
+ unsigned int stream_id:16;
} MemTxAttrs;
/* Bus masters which don't specify any attributes will get this,