diff --git a/hw/ide/macio.c b/hw/ide/macio.c
index af57168db3..c14a1ddddb 100644
--- a/hw/ide/macio.c
+++ b/hw/ide/macio.c
@@ -193,6 +193,11 @@ static void pmac_ide_transfer_cb(void *opaque, int ret)
         goto done;
     }
 
+    if (--io->requests) {
+        /* More requests still in flight */
+        return;
+    }
+
     if (!m->dma_active) {
         MACIO_DPRINTF("waiting for data (%#x - %#x - %x)\n",
                       s->nsector, io->len, s->status);
@@ -212,6 +217,13 @@ static void pmac_ide_transfer_cb(void *opaque, int ret)
         s->nsector -= n;
     }
 
+    if (io->finish_remain_read) {
+        /* Finish a stale read from the last iteration */
+        io->finish_remain_read = false;
+        cpu_physical_memory_write(io->finish_addr, io->remainder,
+                                  io->finish_len);
+    }
+
     MACIO_DPRINTF("remainder: %d io->len: %d nsector: %d "
                   "sector_num: %" PRId64 "\n",
                   io->remainder_len, io->len, s->nsector, sector_num);
@@ -229,7 +241,6 @@ static void pmac_ide_transfer_cb(void *opaque, int ret)
             break;
         case IDE_DMA_WRITE:
             cpu_physical_memory_read(io->addr, p, remainder_len);
-            bdrv_write(s->bs, sector_num - 1, io->remainder, 1);
             break;
         case IDE_DMA_TRIM:
             break;
@@ -237,6 +248,15 @@ static void pmac_ide_transfer_cb(void *opaque, int ret)
         io->addr += remainder_len;
         io->len -= remainder_len;
         io->remainder_len -= remainder_len;
+
+        if (s->dma_cmd == IDE_DMA_WRITE && !io->remainder_len) {
+            io->requests++;
+            qemu_iovec_reset(&io->iov);
+            qemu_iovec_add(&io->iov, io->remainder, 0x200);
+
+            m->aiocb = bdrv_aio_writev(s->bs, sector_num - 1, &io->iov, 1,
+                                       pmac_ide_transfer_cb, io);
+        }
     }
 
     if (s->nsector == 0 && !io->remainder_len) {
@@ -267,20 +287,25 @@ static void pmac_ide_transfer_cb(void *opaque, int ret)
 
         switch (s->dma_cmd) {
         case IDE_DMA_READ:
-            bdrv_read(s->bs, sector_num + nsector, io->remainder, 1);
-            cpu_physical_memory_write(io->addr + io->len - unaligned,
-                                      io->remainder, unaligned);
+            io->requests++;
+            io->finish_addr = io->addr + io->len - unaligned;
+            io->finish_len = unaligned;
+            io->finish_remain_read = true;
+            qemu_iovec_reset(&io->iov);
+            qemu_iovec_add(&io->iov, io->remainder, 0x200);
+
+            m->aiocb = bdrv_aio_readv(s->bs, sector_num + nsector, &io->iov, 1,
+                                      pmac_ide_transfer_cb, io);
             break;
         case IDE_DMA_WRITE:
             /* cache the contents in our io struct */
             cpu_physical_memory_read(io->addr + io->len - unaligned,
-                                     io->remainder, unaligned);
+                                     io->remainder + io->remainder_len,
+                                     unaligned);
             break;
         case IDE_DMA_TRIM:
             break;
         }
-
-        io->len -= unaligned;
     }
 
     MACIO_DPRINTF("io->len = %#x\n", io->len);
@@ -292,10 +317,12 @@ static void pmac_ide_transfer_cb(void *opaque, int ret)
     io->remainder_len = (0x200 - unaligned) & 0x1ff;
     MACIO_DPRINTF("set remainder to: %d\n", io->remainder_len);
 
-    /* We would read no data from the block layer, thus not get a callback.
-       Just fake completion manually. */
+    /* Only subsector reads happening */
     if (!io->len) {
-        pmac_ide_transfer_cb(opaque, 0);
+        if (!io->requests) {
+            io->requests++;
+            pmac_ide_transfer_cb(opaque, ret);
+        }
         return;
     }
 
@@ -319,6 +346,8 @@ static void pmac_ide_transfer_cb(void *opaque, int ret)
                                DMA_DIRECTION_TO_DEVICE);
         break;
     }
+
+    io->requests++;
     return;
 
 done:
@@ -374,6 +403,7 @@ static void pmac_ide_transfer(DBDMA_io *io)
         break;
     }
 
+    io->requests++;
     pmac_ide_transfer_cb(io, 0);
 }
 
diff --git a/hw/misc/macio/mac_dbdma.c b/hw/misc/macio/mac_dbdma.c
index 3335476c29..b25e8511b2 100644
--- a/hw/misc/macio/mac_dbdma.c
+++ b/hw/misc/macio/mac_dbdma.c
@@ -748,9 +748,15 @@ static void dbdma_reset(void *opaque)
 void* DBDMA_init (MemoryRegion **dbdma_mem)
 {
     DBDMAState *s;
+    int i;
 
     s = g_malloc0(sizeof(DBDMAState));
 
+    for (i = 0; i < DBDMA_CHANNELS; i++) {
+        DBDMA_io *io = &s->channels[i].io;
+        qemu_iovec_init(&io->iov, 1);
+    }
+
     memory_region_init_io(&s->mem, NULL, &dbdma_ops, s, "dbdma", 0x1000);
     *dbdma_mem = &s->mem;
     vmstate_register(NULL, -1, &vmstate_dbdma, s);
diff --git a/include/hw/ppc/mac_dbdma.h b/include/hw/ppc/mac_dbdma.h
index 90efd277e4..d7db06c031 100644
--- a/include/hw/ppc/mac_dbdma.h
+++ b/include/hw/ppc/mac_dbdma.h
@@ -42,6 +42,11 @@ struct DBDMA_io {
     /* unaligned last sector of a request */
     uint8_t remainder[0x200];
     int remainder_len;
+    QEMUIOVector iov;
+    bool finish_remain_read;
+    hwaddr finish_addr;
+    hwaddr finish_len;
+    int requests;
 };
 
 /*