Add support for parts of the etraxfs dma controller.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4428 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 24 insertions, 0 deletions

diff --git a/hw/etraxfs_dma.h b/hw/etraxfs_dma.h
new file mode 100644
index 0000000000..27719aeae4
--- /dev/null
+++ b/hw/etraxfs_dma.h
@@ -0,0 +1,24 @@
+struct etraxfs_dma_client
+{
+	/* DMA controller. */
+	int channel;
+	void *ctrl;
+
+	/* client.  */
+	struct
+	{
+		int (*push)(void *opaque, unsigned char *buf, int len);
+		void (*pull)(void *opaque);
+		void *opaque;
+	} client;
+};
+
+void *etraxfs_dmac_init(CPUState *env, target_phys_addr_t base, 
+			int nr_channels);
+void etraxfs_dmac_connect(void *opaque, int channel, qemu_irq *line,
+			  int input);
+void etraxfs_dmac_connect_client(void *opaque, int c, 
+				 struct etraxfs_dma_client *cl);
+void etraxfs_dmac_run(void *opaque);
+int etraxfs_dmac_input(struct etraxfs_dma_client *client, 
+		       void *buf, int len, int eop);