@@ -17,6 +17,13 @@
typedef struct ScatterGatherEntry ScatterGatherEntry;
+struct QEMUSGList {
+ ScatterGatherEntry *sg;
+ int nsg;
+ int nalloc;
+ size_t size;
+};
+
#if defined(TARGET_PHYS_ADDR_BITS)
typedef target_phys_addr_t dma_addr_t;
@@ -32,13 +39,6 @@ struct ScatterGatherEntry {
dma_addr_t len;
};
-struct QEMUSGList {
- ScatterGatherEntry *sg;
- int nsg;
- int nalloc;
- dma_addr_t size;
-};
-
void qemu_sglist_init(QEMUSGList *qsg, int alloc_hint);
void qemu_sglist_add(QEMUSGList *qsg, dma_addr_t base, dma_addr_t len);
void qemu_sglist_destroy(QEMUSGList *qsg);
This lets scsi-* observe the overall s/g list and pass it to the DMA helpers. size_t can potentially be smaller than dma_addr_t. However, the overall size of a S/G list can actually be bigger than dma_addr_t because (for writes) you could reuse the same buffer multiple times. So there is no difference in practice. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> --- dma.h | 14 +++++++------- 1 files changed, 7 insertions(+), 7 deletions(-)