xilinx: Add AXIENET & DMA models

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@petalogix.com>

Makefile.target

@@ -272,6 +272,8 @@ obj-microblaze-y += xilinx_intc.o
 obj-microblaze-y += xilinx_timer.o
 obj-microblaze-y += xilinx_uartlite.o
 obj-microblaze-y += xilinx_ethlite.o
+obj-microblaze-y += xilinx_axidma.o
+obj-microblaze-y += xilinx_axienet.o
 
 obj-microblaze-$(CONFIG_FDT) += device_tree.o
 

hw/xilinx_axidma.h

@@ -0,0 +1,39 @@
+/* AXI DMA connection. Used until qdev provides a generic way.  */
+typedef void (*DMAPushFn)(void *opaque,
+                            unsigned char *buf, size_t len, uint32_t *app);
+
+struct XilinxDMAConnection {
+    void *dma;
+    void *client;
+
+    DMAPushFn to_dma;
+    DMAPushFn to_client;
+};
+
+static inline void xlx_dma_connect_client(struct XilinxDMAConnection *dmach,
+                                          void *c, DMAPushFn f)
+{
+    dmach->client = c;
+    dmach->to_client = f;
+}
+
+static inline void xlx_dma_connect_dma(struct XilinxDMAConnection *dmach,
+                                       void *d, DMAPushFn f)
+{
+    dmach->dma = d;
+    dmach->to_dma = f;
+}
+
+static inline
+void xlx_dma_push_to_dma(struct XilinxDMAConnection *dmach,
+                         uint8_t *buf, size_t len, uint32_t *app)
+{
+    dmach->to_dma(dmach->dma, buf, len, app);
+}
+static inline
+void xlx_dma_push_to_client(struct XilinxDMAConnection *dmach,
+                            uint8_t *buf, size_t len, uint32_t *app)
+{
+    dmach->to_client(dmach->client, buf, len, app);
+}
+