[Qemu-ppc] [PATCH v4 10/18] spapr_pci: Define DDW callbacks

[Alexey Kardashevskiy]

This adds callbacks definitions which PHB needs to implement in order to
support dynamic DMA windows (DDW).

Will be squashed later.

Signed-off-by: Alexey Kardashevskiy <address@hidden>
Reviewed-by: David Gibson <address@hidden>
---
 include/hw/pci-host/spapr.h | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/include/hw/pci-host/spapr.h b/include/hw/pci-host/spapr.h
index 5c91387..eec95f3 100644
--- a/include/hw/pci-host/spapr.h
+++ b/include/hw/pci-host/spapr.h
@@ -49,6 +49,27 @@ struct sPAPRPHBClass {
     PCIHostBridgeClass parent_class;
 
     void (*finish_realize)(sPAPRPHBState *sphb, Error **errp);
+
+/* sPAPR spec defined pagesize mask values */
+#define DDW_PGSIZE_4K       0x01
+#define DDW_PGSIZE_64K      0x02
+#define DDW_PGSIZE_16M      0x04
+#define DDW_PGSIZE_32M      0x08
+#define DDW_PGSIZE_64M      0x10
+#define DDW_PGSIZE_128M     0x20
+#define DDW_PGSIZE_256M     0x40
+#define DDW_PGSIZE_16G      0x80
+#define DDW_PGSIZE_MASK     0xFF
+
+    int (*ddw_query)(sPAPRPHBState *sphb, uint32_t *windows_supported,
+                     uint32_t *page_size_mask,
+                     uint32_t *dma32_window_size,
+                     uint64_t *dma64_window_size);
+    int (*ddw_create)(sPAPRPHBState *sphb, uint32_t liobn,
+                      uint32_t page_shift, uint32_t window_shift,
+                      sPAPRTCETable **ptcet);
+    int (*ddw_remove)(sPAPRPHBState *sphb, sPAPRTCETable *tcet);
+    int (*ddw_reset)(sPAPRPHBState *sphb);
 };
 
 typedef struct spapr_pci_msi {
-- 
2.0.0