isa: Move DMA_transfer_handler from qemu-common.h to hw/isa/isa.h

DMA_transfer_handler is actually an ISA thing, and as such has no
business in qemu-common.h.  Move it to hw/isa/isa.h, and rename it to
IsaDmaTransferHandler.
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

hw/dma/i8257.c

@@ -381,7 +381,7 @@ out:
 }
 
 static void i8257_dma_register_channel(IsaDma *obj, int nchan,
-                                       DMA_transfer_handler transfer_handler,
+                                       IsaDmaTransferHandler transfer_handler,
                                        void *opaque)
 {
     I8257State *d = I8257(obj);

include/hw/isa/i8257.h

@@ -11,7 +11,7 @@ typedef struct I8257Regs {
     uint8_t pageh;
     uint8_t dack;
     uint8_t eop;
-    DMA_transfer_handler transfer_handler;
+    IsaDmaTransferHandler transfer_handler;
     void *opaque;
 } I8257Regs;
 

include/hw/isa/isa.h

@@ -54,6 +54,9 @@ typedef enum {
     ISADMA_TRANSFER_ILLEGAL,
 } IsaDmaTransferMode;
 
+typedef int (*IsaDmaTransferHandler)(void *opaque, int nchan, int pos,
+                                     int size);
+
 typedef struct IsaDmaClass {
     InterfaceClass parent;
 
@@ -65,7 +68,7 @@ typedef struct IsaDmaClass {
     void (*release_DREQ)(IsaDma *obj, int nchan);
     void (*schedule)(IsaDma *obj);
     void (*register_channel)(IsaDma *obj, int nchan,
-                             DMA_transfer_handler transfer_handler,
+                             IsaDmaTransferHandler transfer_handler,
                              void *opaque);
 } IsaDmaClass;
 

include/qemu-common.h

@@ -294,8 +294,6 @@ int qemu_openpty_raw(int *aslave, char *pty_name);
     sendto(sockfd, buf, len, flags, destaddr, addrlen)
 #endif
 
-typedef int (*DMA_transfer_handler) (void *opaque, int nchan, int pos, int size);
-
 void tcg_exec_init(unsigned long tb_size);
 bool tcg_enabled(void);